Tag Archives: worm gear gearbox

China best Dc Motor 60Nm Z90 Gearbox Worm And Gear Motor 150Rpm 50 Rpm 12V 24V 200W 350W Dc Worm Gear Motor with Best Sales

item
value

Brand Name
KSTONEMOTOR

Model Number
KS-90WZYJ08 (200W~350W)

Certifications
CE, ROHS, ISO9001

Continuous Current(A)
25 A

Efficiency
IE 3

Torque
100~400 kg.cm

Voltage
12V 24V 36V 48V

Rated Speed
40~250rpm

Power
200~350 W 

Specification Related Products Company Profile HangZhou Dake Motor has always been an excellent DC Gear Motors manufacturer.The motors are widely used for Automotive, Home appliances, Personal care, Powertools, Industry, and Intelligent products which provide healthyand convenient ways in life. Dake has a large number of production equipment, test equipment, gear processing equipment imported from Japan and Switzerland. Buyer Comments Packing & AD-004 KOWA Manufacturer prices small outer driveshaft cv joints for a8 Delivery 1. 4PCS/Carton2. Gross weight: 20 Kg/ Carton FAQ Q: Are you trading company or manufacturer?A: We are factory.Q: How to order?A: send us inquiry → receive our quotation → negotiate details → confirm the sample → sign contract/deposit → mass production → cargo ready → balance/delivery → further cooperationQ: How about Sample order?A: Sample is available for you. please contact us for details.Q: Which shipping way is available?A: DHL, FedEx, By Sea are available. The other shipping ways are also available, Adult 1000W 1200W 1500W 48V shaft drive electric ATV quad bike ATV please contact us if you need ship by the other shipping way. Q: How long is the deliver, producing and shipping?A: Deliver time depends on the quantity you order. usually it takes 15-25 working days.Q: How to confirm the payment?A: We accept payment by T/T, PayPal, the other payment ways also could be accepted, Please contact us before you pay by the other payment ways. Also 50% deposit is available, the balance money should be paid before shipping.Q: What is your terms of payment?A: Payment=20000USD, 50% T/T in advance ,balance before shipment.If you have another question, GJF hotsale 4wd drive shaft for Mazda CX5 2.0 AT C-MZ113-8H please feel free to contact us.

How to Select a Worm Shaft and Gear For Your Project

You will learn about axial pitch PX and tooth parameters for a Worm Shaft 20 and Gear 22. Detailed information on these two components will help you select a suitable Worm Shaft. Read on to learn more….and get your hands on the most advanced gearbox ever created! Here are some tips for selecting a Worm Shaft and Gear for your project!…and a few things to keep in mind.
worm shaft

Gear 22

The tooth profile of Gear 22 on Worm Shaft 20 differs from that of a conventional gear. This is because the teeth of Gear 22 are concave, allowing for better interaction with the threads of the worm shaft 20. The worm’s lead angle causes the worm to self-lock, preventing reverse motion. However, this self-locking mechanism is not entirely dependable. Worm gears are used in numerous industrial applications, from elevators to fishing reels and automotive power steering.
The new gear is installed on a shaft that is secured in an oil seal. To install a new gear, you first need to remove the old gear. Next, you need to unscrew the two bolts that hold the gear onto the shaft. Next, you should remove the bearing carrier from the output shaft. Once the worm gear is removed, you need to unscrew the retaining ring. After that, install the bearing cones and the shaft spacer. Make sure that the shaft is tightened properly, but do not over-tighten the plug.
To prevent premature failures, use the right lubricant for the type of worm gear. A high viscosity oil is required for the sliding action of worm gears. In two-thirds of applications, lubricants were insufficient. If the worm is lightly loaded, a low-viscosity oil may be sufficient. Otherwise, a high-viscosity oil is necessary to keep the worm gears in good condition.
Another option is to vary the number of teeth around the gear 22 to reduce the output shaft’s speed. This can be done by setting a specific ratio (for example, five or ten times the motor’s speed) and modifying the worm’s dedendum accordingly. This process will reduce the output shaft’s speed to the desired level. The worm’s dedendum should be adapted to the desired axial pitch.

Worm Shaft 20

When selecting a worm gear, consider the following things to consider. These are high-performance, low-noise gears. They are durable, low-temperature, and long-lasting. Worm gears are widely used in numerous industries and have numerous benefits. Listed below are just some of their benefits. Read on for more information. Worm gears can be difficult to maintain, but with proper maintenance, they can be very reliable.
The worm shaft is configured to be supported in a frame 24. The size of the frame 24 is determined by the center distance between the worm shaft 20 and the output shaft 16. The worm shaft and gear 22 may not come in contact or interfere with one another if they are not configured properly. For these reasons, proper assembly is essential. However, if the worm shaft 20 is not properly installed, the assembly will not function.
Another important consideration is the worm material. Some worm gears have brass wheels, which may cause corrosion in the worm. In addition, sulfur-phosphorous EP gear oil activates on the brass wheel. These materials can cause significant loss of load surface. Worm gears should be installed with high-quality lubricant to prevent these problems. There is also a need to choose a material that is high-viscosity and has low friction.
Speed reducers can include many different worm shafts, and each speed reducer will require different ratios. In this case, the speed reducer manufacturer can provide different worm shafts with different thread patterns. The different thread patterns will correspond to different gear ratios. Regardless of the gear ratio, each worm shaft is manufactured from a blank with the desired thread. It will not be difficult to find one that fits your needs.
worm shaft

Gear 22’s axial pitch PX

The axial pitch of a worm gear is calculated by using the nominal center distance and the Addendum Factor, a constant. The Center Distance is the distance from the center of the gear to the worm wheel. The worm wheel pitch is also called the worm pitch. Both the dimension and the pitch diameter are taken into consideration when calculating the axial pitch PX for a Gear 22.
The axial pitch, or lead angle, of a worm gear determines how effective it is. The higher the lead angle, the less efficient the gear. Lead angles are directly related to the worm gear’s load capacity. In particular, the angle of the lead is proportional to the length of the stress area on the worm wheel teeth. A worm gear’s load capacity is directly proportional to the amount of root bending stress introduced by cantilever action. A worm with a lead angle of g is almost identical to a helical gear with a helix angle of 90 deg.
In the present invention, an improved method of manufacturing worm shafts is described. The method entails determining the desired axial pitch PX for each reduction ratio and frame size. The axial pitch is established by a method of manufacturing a worm shaft that has a thread that corresponds to the desired gear ratio. A gear is a rotating assembly of parts that are made up of teeth and a worm.
In addition to the axial pitch, a worm gear’s shaft can also be made from different materials. The material used for the gear’s worms is an important consideration in its selection. Worm gears are usually made of steel, which is stronger and corrosion-resistant than other materials. They also require lubrication and may have ground teeth to reduce friction. In addition, worm gears are often quieter than other gears.

Gear 22’s tooth parameters

A study of Gear 22’s tooth parameters revealed that the worm shaft’s deflection depends on various factors. The parameters of the worm gear were varied to account for the worm gear size, pressure angle, and size factor. In addition, the number of worm threads was changed. These parameters are varied based on the ISO/TS 14521 reference gear. This study validates the developed numerical calculation model using experimental results from Lutz and FEM calculations of worm gear shafts.
Using the results from the Lutz test, we can obtain the deflection of the worm shaft using the calculation method of ISO/TS 14521 and DIN 3996. The calculation of the bending diameter of a worm shaft according to the formulas given in AGMA 6022 and DIN 3996 show a good correlation with test results. However, the calculation of the worm shaft using the root diameter of the worm uses a different parameter to calculate the equivalent bending diameter.
The bending stiffness of a worm shaft is calculated through a finite element model (FEM). Using a FEM simulation, the deflection of a worm shaft can be calculated from its toothing parameters. The deflection can be considered for a complete gearbox system as stiffness of the worm toothing is considered. And finally, based on this study, a correction factor is developed.
For an ideal worm gear, the number of thread starts is proportional to the size of the worm. The worm’s diameter and toothing factor are calculated from Equation 9, which is a formula for the worm gear’s root inertia. The distance between the main axes and the worm shaft is determined by Equation 14.
worm shaft

Gear 22’s deflection

To study the effect of toothing parameters on the deflection of a worm shaft, we used a finite element method. The parameters considered are tooth height, pressure angle, size factor, and number of worm threads. Each of these parameters has a different influence on worm shaft bending. Table 1 shows the parameter variations for a reference gear (Gear 22) and a different toothing model. The worm gear size and number of threads determine the deflection of the worm shaft.
The calculation method of ISO/TS 14521 is based on the boundary conditions of the Lutz test setup. This method calculates the deflection of the worm shaft using the finite element method. The experimentally measured shafts were compared to the simulation results. The test results and the correction factor were compared to verify that the calculated deflection is comparable to the measured deflection.
The FEM analysis indicates the effect of tooth parameters on worm shaft bending. Gear 22’s deflection on Worm Shaft can be explained by the ratio of tooth force to mass. The ratio of worm tooth force to mass determines the torque. The ratio between the two parameters is the rotational speed. The ratio of worm gear tooth forces to worm shaft mass determines the deflection of worm gears. The deflection of a worm gear has an impact on worm shaft bending capacity, efficiency, and NVH. The continuous development of power density has been achieved through advancements in bronze materials, lubricants, and manufacturing quality.
The main axes of moment of inertia are indicated with the letters A-N. The three-dimensional graphs are identical for the seven-threaded and one-threaded worms. The diagrams also show the axial profiles of each gear. In addition, the main axes of moment of inertia are indicated by a white cross.

China best Dc Motor 60Nm Z90 Gearbox Worm And Gear Motor 150Rpm 50 Rpm 12V 24V 200W 350W Dc Worm Gear Motor  with Best SalesChina best Dc Motor 60Nm Z90 Gearbox Worm And Gear Motor 150Rpm 50 Rpm 12V 24V 200W 350W Dc Worm Gear Motor  with Best Sales

High bgr worm gear reducer sales made in China – replacement parts – in Santa Marta Colombia Quality T Series 90 Degree Shaft Agitator Gearbox Rotary Cutter Gearbox Motoreductor Extruder Gearbox Transmission with top quality

High  bgr worm gear reducer  sales  made in China - replacement parts -  in Santa Marta Colombia  Quality T Series 90 Degree Shaft Agitator Gearbox Rotary Cutter Gearbox Motoreductor Extruder Gearbox Transmission with top quality

We – EPG Team the most significant worm gearbox, couplings and gears manufacturing unit in China with 5 diverse branches. For much more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778083988828 /

T sequence Spiral Bevel gearbox reducer ninety diploma gear transmission Tiny Right Angle Spiral Bevel Equipment Steering Gearbox

Product Description

Benefit:

-Self-loc ept potential
-Can be driven immediately by motor or other power or handbook
-Can be custom-made according user’s demand
-Compact configuration, modest measurement, lightweight
-Convenient installation, flexible operation
-Higher dependability and steadiness
-Lengthy services daily life
-More link form and so forth.
Screw jak is applied to all fields for lifting or pulling, this kind of as Aircraft servicing system, Photo voltaic plate, equipment, metallurgy, water conservancy, medical remedy, chemical market, tradition and hygienist etc.

 

Specifications:
1.Tseries sprial bevel equipment reducer with numerous types are standardized
two.all ratio of 1:1,1.5:twelve:12.5:13:fourteen:1and 5:1 are actual ones,
3.regular performance is 98%.

Item Name T collection Spiral Bevel Gearbox
design no. T2, T4, T6, T7, T8, T10, T12, T16, T20, T25
Ratio one:1, 1.5:1, 2:1, 2.5:1,3:1,4:1,5:1
gear Material  substantial quality artificial diamond 50CrMnT
Equipment Processing Grinding finish by HOFLER Grinding Equipment, Precision quality : DIN four
spindle substantial purity steel alloy 40Cr piece
Sound Examination Bellow 65dB
Warranty 1 calendar year

 

Firm Details

 

Quality handle

 

Packing

Pac ept Particulars: Normal carton/Pallet/Regular wooden case

Delivery Details : 15-30 wor ept days on payment

Our Certifications

Relevant Product

Precision Planetary gearbox

 

Precision Planetary gearbox Robotic RV gearbox velocity reducer
Custom made Non-common Gearbox UDL Series Variator
PYZ Series Helical Tooth Shaft Mounted Reducer 8000 Series Cycloidal Reducer
SLT Series  Spiral Bevel Gearbox SLSWL Collection Worm Screw Jack
SLP Sequence Planetary Reducer SLH/SLB Collection Higher Power Reducer
NMRV Sequence Worm Reducer BKM Collection Helical-hypoid Reducer
SLRC Series Helical Reducer SLSMR Sequence Shaft Mounted Reducer
SLXG Sequence Shaft Mounted Reducer X/B Series Cycloidal Reducer
SLR/SLF/SLK/SLS Collection Helical Reducer AC/DC Motor

 

FAQ

 

1.Payment Time period: TT, L/C

two.Supply time: about  thirty days from receive payment. 

3.We settle for customized items as per your specific need.

4.Xihu (West Lake) Dis.lines for the Choice:Usually we can pick 1 device which is appropriate for you with some informations from you,these kinds of as ratio/motor speed/mounting dimension/ out torque etc. 

5.If the bare minimum buy sum is in excess of $ten thousand, there are preferential.

 

Q1: What details ought to I inform you to verify the solution?

A:Product/Measurement, Transmission Ratio, Shaft instructions & Purchase amount.

Q2: What can i do if I never know which 1 I need?

A:Dont be concerned, Send as much information as you can, our group will support you find the proper one particular you are loo ept for.

Q3: What is your item guarantee interval?

A:We offer one particular calendar year guarantee given that the vessel departure day remaining China.

 

This fall: Are you ept firm or producer ?

A: We are manufacturing unit.

 

Q5: How extended is your shipping time?

A: Generally it is 5-10 times if the products are in stock. or it is 15-20 days if the items are not in inventory, it is in accordance to amount.

 

Q6: Do you supply samples ? is it free or additional ?

A: Yes, we could offer you the sample for totally free demand but do not shell out the expense of freight.

 

Q7: What is your conditions of payment ?

A: Payment=1000USD, 30% T/T in ept ,equilibrium ahead of shippment.

 

If you have one more question, pls feel free to get in touch with us as beneath:

Contact Us

 

/ The use of first tools manufacturer’s (OEM) element quantities or emblems , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our firm and the outlined substitution areas contained herein are not sponsored, authorized, or made by the OEM. /

High  bgr worm gear reducer  sales  made in China - replacement parts -  in Santa Marta Colombia  Quality T Series 90 Degree Shaft Agitator Gearbox Rotary Cutter Gearbox Motoreductor Extruder Gearbox Transmission with top quality

High  bgr worm gear reducer  sales  made in China - replacement parts -  in Santa Marta Colombia  Quality T Series 90 Degree Shaft Agitator Gearbox Rotary Cutter Gearbox Motoreductor Extruder Gearbox Transmission with top quality

S worm gear gearbox wholesaler made in China – replacement parts – in Padova Italy Series Helical Worm Gearbox Motor Speed Reductor for Hoist with top quality

S  worm gear gearbox  wholesaler  made in China - replacement parts -  in Padova Italy  Series Helical Worm Gearbox Motor Speed Reductor for Hoist with top quality

We – EPG Group the most significant worm gearbox, couplings and gears manufacturing unit in China with 5 various branches. For more details: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778083988828 /

S Collection Helical-Worm Reduction Gearbox

1. Product Qualities:
S sequence helical worm gearbox adopts the helical worm gears to make its structure much more realistic. S series not only has greater transmission efficency and loading functionality than people single-stage worm wheel transmission, but also scaled-down volume and appearance. Additionally, S series worm gearbox has increased transmission ratio, and can be merged with a variety of gearboxes and velocity variators to meet the distinct demands.

two. Structure:
S sequence gearbox are accessible in the pursuing patterns:
(1) SY  Foot mounted helical worm gearbox with strong shaft

(2) SAY  Helical worm gearbox with hollow shaft

(3) SAZY  Small flange mounted helical worm gearbox with hollow shaft

(4) SA (S,SF,SAF,SAZ)Y  Assemble users’ motor or particular motor, flange is required

(5) SFY  Flange mounted helical worm gearbox with sound shaft

(6) SAFY  Flange mounted helical worm gearbox with hollow shaft

(7) SATY  Torque arm mounted helical worm gearbox with hollow shaft

(8) S (SF,SA,SAF,SAZ) S  Shaft input helical worm gearbox

(9) SA (S,SF,SAF,SAZ)RY  Combined helical worm gearbox

(ten) SA (S,SF,SAF,SAZ)SR  Shaft input mixed helical worm gearbox

3. Detailed parameters:

   Size
 
38 forty eight 58 68 78 88 98
  Construction
 
                                          S SA SF SAF SAT SAZ
   Input Energy(KW) .eighteen-.75 .18-1.five .eighteen-3 .twenty five-5.five .55-7.5 .seventy five-15 1.5-22
Ratio ten.27-152 eleven.46-244.seventy four ten.78-196.21 eleven.fifty five-227.twenty 9.96-241.09 11.eighty three-222 twelve.75-230.forty eight
Maximum torque(N.m) ninety a hundred and seventy 295 520 1270 2280 4000

4.Apps:
The items are widely applied in electrical power, coal, cement, metallurgy, harbor, agriculture, shipping, lifting, setting protection, phase, logistic, weaving, paper making, light business, plastics and other areas.

5. Specialized Information:
Rated Energy:.18~22KW
Output Velocity: 0.sixteen~147r/min
Output Torque:90~4000N.m
Mounted Type:Foot-mounted, flange mounted, shaft-mounted, torque arm mounted

six.Item picture:

Packages:
 

Organization Info:

Speak to Specifics:

 

/ The use of original tools manufacturer’s (OEM) element quantities or logos , e.g. CASE® and John Deere® are for reference needs only and for indicating product use and compatibility. Our firm and the outlined alternative components contained herein are not sponsored, authorized, or manufactured by the OEM. /

S  worm gear gearbox  wholesaler  made in China - replacement parts -  in Padova Italy  Series Helical Worm Gearbox Motor Speed Reductor for Hoist with top quality

S  worm gear gearbox  wholesaler  made in China - replacement parts -  in Padova Italy  Series Helical Worm Gearbox Motor Speed Reductor for Hoist with top quality

Permanent electra-gear worm reducer shop made in China – replacement parts – in The Hague Netherlands Magnet Nmrv Worm Reducer Gear Motor with Aluminium Alloy Gearbox 48V 35 Rpm with top quality

Permanent  electra-gear worm reducer  shop  made in China - replacement parts -  in The Hague Netherlands  Magnet Nmrv Worm Reducer Gear Motor with Aluminium Alloy Gearbox 48V 35 Rpm with top quality

We – EPG Team the biggest worm gearbox, couplings and gears manufacturing facility in China with 5 different branches. For more specifics: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778083988828 /

Long lasting Magnet NMRV Worm Reducer Equipment Motor with Aluminium Alloy Gearbox 48V 35 RPM 

Product:D110-48v1000w-35rpm

Type dc worm gear motor 
Motor  Diameter  110mm
Voltage 12v 24v 36v 40v 42v 48v 60v
Energy 1000W
Torque 250N.M
Pace 35RPM
Materials of equipment Plastic / brass
OEM/ODM Support Accept
Use Hydraulic pump ,electric powered forklift ,raise truck, garage door opener,treadmill,electric lawn mower,electric powered vacuum cleaner, health care gear,other electric powered instruments.

HangZhou ept Science & Technologies Co.,Ltd is a subsidiary of HangZhou ept Motor Co.,Ltd.The manufacturing facility is positioned in Xihu (West Lake) Dis.,HangZhou,we can style and manufacture of motors in accordance to all our customers’ requires so significantly,we can manufacture about 60,000 motors per thirty day period.

Our main market:

Europe,The usa and Asia,including United Kingdom, Germany, Italy, France, Sweden, United State,Brazil,India,Korea and so on.

Firm Benefits:

  1. Massive manufacturing capability, quickly shipping and delivery.

  2. Rigid QC inspecting policies: all merchandise have to be a hundred% inspected before shipping.

  3. OEM/ODM solutions are obtainable

 4. 24 hrs on the internet provider.

 5. Prompt quotation for your inquiry

  6. Top quality,reliability and prolonged item life.

  7. Professional company gives competitive cost.

  8. Diversified rich seasoned experienced staff.

A lot more Programs:

Vehicle simulator ,garage door opener ,gate operator, par ept lock,wheelchair ,electric powered car ,drinking water pump ,oil pump,stitching device,food processor blender machine, welding device,ground polisher,truck carry,stair lift,healthcare facility bed ,hydraulic pump electrical forklift.

RFQ:

Q: Are you ept firm or maker ?

A: We are Integration of ept and trade, with in excess of 20 a long time knowledge in DC worm gear motor. Our business have amassed skilled production line, comprehensive management and effective investigation assist, which could match all of the customers’ requirements and make them fulfillment.
 

Q: What is your main product?

DC Motor: Gear motor, Sq. motor, Stepped motor, and Micro motor
-Welding tools: Wire feeder, Welding rod, Welding Torch, Earth clamp, Electrode holder, and Rectifier
 

Q: What if I do not know which DC motor I need to have?

A: Do not be concerned, Deliver as significantly info as you can, our crew will assist you discover the appropriate one particular you are bathroom ept for.
 

Q: What is your phrases of payment ?

A: Payment=1000USD, 30% T/T in ept ,harmony just before shippment.
If you have yet another concern, pls truly feel free of charge to get in touch with us as under:
 

Q: How to shipping and delivery:

A: By sea – Customer appoint forwarder, or our income staff locate ideal forwarder for consumers. 

By air – Consumer offer accumulate categorical account, or our income crew uncover suitable express for consumers. (Primarily for sample)
Other people – Really,samples deliver by DHL,UPS, TNT and Fedex etc. We arrange to supply merchandise to some spot from China appointed by buyers.

Q: How lengthy is your shipping time?
A: Usually it is 5-ten times if the products are in stock. or it is fifteen-20 days if the merchandise are not in stock, it is in accordance to quantity.

 

/ The use of unique products manufacturer’s (OEM) element quantities or trademarks , e.g. CASE® and John Deere® are for reference needs only and for indicating merchandise use and compatibility. Our company and the detailed substitution components contained herein are not sponsored, accepted, or manufactured by the OEM. /

Permanent  electra-gear worm reducer  shop  made in China - replacement parts -  in The Hague Netherlands  Magnet Nmrv Worm Reducer Gear Motor with Aluminium Alloy Gearbox 48V 35 Rpm with top quality

Permanent  electra-gear worm reducer  shop  made in China - replacement parts -  in The Hague Netherlands  Magnet Nmrv Worm Reducer Gear Motor with Aluminium Alloy Gearbox 48V 35 Rpm with top quality

Best China manufacturer & factory Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox With high quality best price

Best China manufacturer & factory Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox With high quality best price

Our products are applied in many fields.

Overview

Quick Details

Applicable Industries:

Construction works

Brand Name:

OEM

We warmly welcome the friends from all the world!

Gearing Arrangement:

worm

Output Torque:

15~1700Nm

Input Speed:

500~2800/min

Output Speed:

5~560/min

Product name:

speed reducer reduction worm motor 1:40 ratio gearbox

Application:

Food Stuff, Ceramics, Chemical, Packing, Dyeing,Wood working, Glass.

Color:

Blue(RAL5010)/Silver grey (RAL9022) Or On Request

Ratio:

5,7.5,10,15,20,25,30,40,50,60,80,100.

Warranty:

1 Year

Supply Ability

Supply Ability:
36000 Piece/Pieces per Month

Packaging & Delivery

Packaging Details
Transparent box packaging, or color box packaging, it also can be customized.
Port
Ningbo/Shanghai

Online Customization

–Driven (outer) yoke same as drive yoke but is mounted on the implement. There are two types of shafts, domestic and metric, which are identifiable by their shapes. Domestic are generally one of four shapes: round, square, rectangle or splined. Metric are: bell, star or football shaped. In either case the primary (front) shaft is the same shape as the secondary shaft, only bigger so that the secondary shaft fits inside. This allows a telescoping effect to take place when the implement is raised on the 3 pt. or during a turning movement such as a bailer. All shafts have to be sized before use. Attach the implement to the 3 pt. and raise and support it. Attach the proper end to the tractor and attempt to attach the other to the implement. If the shaft is too long trim one of the shafts with a hack saw and try it again until it fits. This allows for the implement to be raised without binding. The shafts should overlap as much as allowed.

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

 

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

 

 Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

 

 Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

 

 Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

 

Q1.How to choose a 1:40 ratio gearbox which meets our requirement?
A1: You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
       the technical information of output torque, output speed and motor parameter etc.

 

Q2.How is your price? Can you offer any discount?
A2: We will give the best price we can base on your needs and the quantities.

 

Q3.Do you offer any visiting?
A3: Yes! We sincerely invite you to visit us! We can pick you from airport, railway station and so on.
       Also, we can arrange housing for you. Please let us know in advanced.

 

Q4.When is the best time to contact you?
A4: You can contact us by email any time, we will reply you as soon as possible.

 

Q5.How long will it take for the lead time?
A5: For our standard model, please refer to the different product pages to check the lead time.
      For the OEM/ODM products, please contact us for further information.

 

 

Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox

Best China manufacturer & factory Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox With high quality best price

Best China manufacturer & factory Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox With high quality best price

Best China manufacturer & factory Gold supplier gear box aluminium variable speed reducer reduction worm motor 1:40 ratio gearbox With high quality best price

Best China manufacturer & factory NMRV030 60 Watt 24VDC Worm Gear Motor Low Speed 22RPM High Torque with Gearbox Speed Reducer Ratio 80 1 With high quality best price

Best China manufacturer & factory NMRV030 60 Watt 24VDC Worm Gear Motor Low Speed 22RPM High Torque with Gearbox Speed Reducer Ratio 80 1 With high quality best price

EPG will always adhere to it enterprise spirit of being practical, innovative, efficient and excellent to make the top international transmission drive.

Overview

Quick Details

Applicable Industries:

Manufacturing Plant

ITEM NO:

SYF

Color:

Customer Request

Ratio:

5-100

Material:

Aluminium Alloy

Warranty:

1-2 Years

Certificate:

ISO9001

Bearing:

NSK Bearing

Heat treatment:

58-62 HRC

Output Form:

Hollow Sahft Output

Gear material:

45# Cast Steel

Packaging & Delivery

Lead Time
:
Quantity(Bags) 1 – 2 3 – 10 >10
Est. Time(days) 3 8 To be negotiated

Online Customization

Mounting Dimension

The products are widely applied in the producing equipments of all kinds of industries inside and outside China. They are the best choices for nowadays modern facilities of mechanical reducing drive control to realize large twisting distance, large gear ratio, little noise, high efficiency and stability.

Model:

NMRV025, 030, 040, 050, 063, 075, 090, 110, 130, 150

Ratio:

1:5,7.5,10,15,20,25,30,40,50,60,80,100

Color:

Blue, Silver Or On Customer Request

Noise:

low noise (<50DB)

Advantage:

Efficient and safe operating

Material:

Housing: Die-Cast Aluminum Alloy

Worm Gear-Bronze 9-4#

Worm-20CrMnTi with carburizing and quenching, surface harness is 56-62HRC

Shaft-chromium steel-45#

Packing:

Carton and Wooden Case

Bearing:

C&U Bearing

Seal:                      

NAK SKF

Certificate:

ISO9001,CE,3C,OEM

Warranty:

12 months

Input Power:   

0.06kw, 0.09kw, 0.12kw, 0.18kw, 0.25kw, 0.37kw, 0.55kw, 0.75kw, 1.1kw, 1.5kw, 2.2kw, 3kw, 4kw, 5.5kw, 7.5kw, 11kw, 15kw       

Usages:

Industrial Machine: Food Stuff, Ceramics,CHEMICAL,Packing,Dyeing,

Woodworking,Glass.

IEC Flange:

56B5, 56B14, 63B5, 63B14, 71B5, 71B14, 80B5, 80B14, 90B5, 90B14, 100B5, 100B14, 112B5, 112B14, 132B5, 160B5

Lubricant:

Synthetic & Mineral

Product Deseription

Single Step Worm Gear Reducer.

The reducer which model is 25~90 made of Aluminum alloy die-casting box,good looking in appearance,compact in structure,rust proofing on surface and small volume to save mounting space.
The reducer model of 110~150 is made of cast iron which casted with Aluminum mould.It`s good looking and solid, and can be used through the setting of multi-azimuth.
Good radiating characterstic leads safe and reliability,and high efficiency for using.
The strong capacity of loading ensure stable transmission,make less vibration and noise.
Varies of connecting structure for power input and torque output meet different require-merits;the design of box outline and the set of foot hole with good versality is apt to many kinds of mounting.

worm drive gearbox, worm gear box, worm reduction gearbox, worm gear motor, Aluminium Worm Gear reducer, light weight gearbox, NMRV speed reducerNMRV Worm Gear Reducers is a aluminum casing gearbox with self-locking and anti-back function, which widely used as transmission units in many light industrial field such like food machinery, chemicals machinery, packing, etc. The gearbox could be couple with AC electric motors as well as servo motors, and two worm gearboxes can be combined to get high ratio and low speed:-Flexible mounting positions capability;-NEMA and IEC motors input adapter flange;-Automated manufacturing process assures reliable quality;-Low temperature rise and noise because of good heat dissipation.-High efficiency up to 65% per stage, low temperature and work quietly;-High quality bearings, O-rings and Double-lip oil seals prevent leaking;-Standard hollow output bore and optional plug-in shafts provide greater flexibility;-Gearbox housings are made of aluminum alloy. beautiful appearance, light weight, non-rust forever;

The NMRV worm gearbox is new generation of products by our factory on the basis of perfecting WJ series products with compromise of advanced technology both at home and abroad.It’s apprearance adopts advanced square box structure.It’s outer body is made of high quality aluminium alloy die casting into forming.It’s small in volume,light weight,high in radiating efficiency,large in output torque,smooth in running and low noise.It’s suitbale for all positions.

Method for moThe EP Line PTO drive shafts are recognizable because of the EP Line patented coupling mechanism and the flexible cone. The PTO drive shafts are distinguished through user-friendliness, compactness and appealing design.del chosen

Please understand the following at first in order to delect the model of RV speed reducer properly.

– Loading condition
 – Speed scope or ratio in application
– Working condition and environment
– Installation space

Company profile

HangZhouYinxin Electromechanical Facilities Co. Ltd

HangZhouYinxin Electromechanical Equipment Co., Ltd.is a gift enterprise integrating development, design, production and sales,Main promoting products include reducer motor,water pump,construction machinery and parts,bearings,hardware and electrical equipment,plastic products,Labour protection appliance.Our company always follow the operation concept which contains people-oriented, innovation as the soul,be prepared for danger in times of peace, unremitting……

Application area

Certifications

Detailed Images

For Good performance of Gear Box, The right selection is very important. The Gear Unit Selection is made by comparing actual transmitted loads with catalogue ratings are based on standard set of load conditions, which invariably changes for different conditions. Therefore service factor must be used to calculate a theoretical transmitted load or equivalent load, before comparing the same, apply the formula : Equivalent Load = Actual Load x Service Factor Mechanical ratings measure capacity in terms of life and / or strength, assuming 10 hours per day continuous running under uniform load conditions, when lubricated with an approved oil and working at a maximum oil temperature of 100°C for normal application lubricant equivalent to ISO VG 320 should be used. When a unit transmits less than catalogue rating, its life is increased. a service factor from Table of Mechanical Service Factor ensure selection of a unit which transmits less than the catalogue rating, its life is thus increased consistent with the increased daily running time. Catalogue ratings allow 100% overload at starting, braking or momentarily during operation, up to 10 times per day. The unit selected must therefore have a catalogue rating equal to, or greater than half the maximum overload. If the unit is subjected to sustained overloads or to shock loads, these must be reflectEPG brand rotocultivator ploughshares in T. line were selected as the Nationwide Rotary Tillage Machinery Industry “Perfect Brand Products” in 2007 by Rotocultivator Branch of China Agricultural Machinery Industry Association. ed in the chosen service factor. If overloads can be calculated or estimated then the actual loads should be used instead of a factor. Thermal ratings measure the unit’s ability to dissipate heat. If they are exceeded the lubricant may overheat and break down, with consequent life failure. Both mechanical and thermal ratings are given on next page. Thermal ratings are effected by If the running time is more than 8 hours per day, Mechanical Ratings & Service Factors : Thermal Ratings and Service Factors : ambient temperature and not by mechanical consideration such as increased running time or shock loads. Catalogue ratings assume 20°C running temperature, the oil temperature then rising as the unit transmits power and generate heat. If the ambient temperature is more than 20° C, a lower temperature rise is allowed therefore less power may be transmitted. Similarly in cooler temperatures the thermal ratings may be exceeded. When selecting unit use a service factor from Table of Thermal Service Factor to calculate equivalent loads. For unit sizes 40 to 200, the relevant mechanical and thermal service factors are selected from tables and whichever is higher is applied to find out the equivalent output power and output torque. For unit size 200 to 350, mechanical service factor should be applied to mechanical ratings and thermal service factor should be applied to thermal ratings. Higher of these should be considered for selection of the unit. Thermal ratings assume fan cooling which is standard feature of all Speed Reduction Units. For intermittent running with ample cooling time during rest periods, thermal ratings may be exceeded without overheating and since fan it ineffective, it can usually be removed. It is recommended that as much as possible of the following information be given in the enquiry or order so that Worm gears are the most compact type of system and provide high-ratio speed reduction. They are often the preferred type of gearing system when space is limited and large gear reductions are needed. Worm gears can be used to either greatly increase torque or greatly reduce speed. They are also the smoothest and quietest of the gear systems, as long as they are properly mounted and lubricated.a check can be made and advice given on the most suitable size of Worm Speed Reducer for any application.It is recommended that as much as possible of the following information be given in the enquiry or order so that a check can be made and advice given on the most suitable size of Worm Speed Reducer for any application. 1. Type of prime mover. 2. Horse-power of prime mover. 3. Output torque required from driven member. 4. Input speed of gear unit. 5. Output speed of gear unit. 6. Configuration of drive required and shaft disposition. 7. Total daily hours of running. If running is intermittent, details of duty cycle should be given.

More about our Company technical Details

EPT offers you the widest range of standard, non standard and customised worm gearbox and worm gear motor. EPT maintains the highest level of standard in manufacturing of worm gears in gearboxes. Right from the design of gearbox, material selection to manufacturing practice of worm gear box and gear motor. Models: 30, 40, 50, 60, 75, 85, 100, 125, 150, 175, 200, 250, 300, 350, 430 Ratio : 5/1 to 4900/1 Center Distances : 40 mm to 400 mm Single stage / Double stage Small Worm Gearbox 50, 60, 75, 85, 100 mm and Ratio 30/1 or 40/1 are usually stock-full and ready to ship or can be made on short notice by customer. Materials:cast iron gear case, worm shaft is of Alloy Steel, duly hardened and tempered. The worm wheel is made of Chill Cast Phosphorous Bronze. Fabrication Crafts:liberal ribbing for increasing heat dissipation area, streamlined sump for carrying more oil and fan of ample size which is effective in both side of rotation. Design Standards:We practically apply American,EU,Japan or Indian Design standards .Worm Shafts conform to case- hardening Alloy Steels, Worm Wheels conform to phosphorous-bronze as per BS 1400, While Gear case conforms to C.I. Grade 20, IS210. Other exclusive features :Worm & Worm Wheels: The worm is made of case-hardening / alloy steel, duly hardened, ground and lapped and is integral with the shaft. Bearing journals ate accurately ground. Worm Wheels is made of chill cast phosphorous bronze and tightly fitted with the C.I. Centres. Worm Wheels teeth are generated on precision hobbing machines and high accuracy hobs. Adaptable Worm Gearbox Bearings: The Worm and Worm Wheels are supported on Extra Heavy Duty Tappet roller anti friction bearings of ample margin of safety to allow adequate journals as well as thrust loads. Overhung loads arising Out of sprocket or pinion drive are generally permissible because the gear case and bearing are designed for this duty. In case of heavy overhung load, and extra roller bearing can be provided. Wheel Shafts: The Worm wheel Shafts are made of high tensile carbon steel, duly hardened and ground. It is of large diameter of carry the torsional as well as the bending loads which may be induced by overhung drives. Lubrication: Lubrication in Worm gearbox is by splash of oil from the sump. Thus, no special care is required except for the occasional oil topping of the oil to the required level. An oil filler cum breather plug is provided along with the drain plug and level plug. Oil seals of appropriate size are provided on all input and output shafts.Only For very low input speed of below 50 RPM, and heavy loads in sizes above 350 mm, forced lubrication is required. Worm Gearbox Cooling: Air cooling is effected by means of standard propylene or metal fans which direct air over the ribbed surface of the Case. The fan is designed to operate in both the direction of rotation and is so arranged in conjunction with the ribbing of the case to allow maximum heat dissipation. Overload Ratings: All the Components of the Gear Unit are so designed that they can withstand 100% overload for 15 seconds 50% overload for one minute 40% overload for 15 minutes 25% overload for 1 hour How to choose a proper type of Gearbox :It is recommended that as much as possible of the following information be given in the enquiry or order so that a check can be made and advice given on the most suitable size of Worm Speed Reducer for any application.1.Type of prime mover.2. Horse-power of prime mover.3. Output torque required from driven member. 4. Input speed of gear unit.5. Output speed of gear unit. 6. Configuration of drive required and shaft disposition. 7. Total daily hours of running. If running is intermitteTo get the type-choose reference,please contact our technical rep or sales rep .

Packing & Delivery

Packaging

Size

500 (L) * 500 (W) * 400 (D)

Weight

1.2 T

Packaging Details

The normal package is wooden box(Size: L*W*H). If export to european countries,the wooden box will be fumigated.If container is too tigher,we will use pe film for packing or pack it according to customers special request.

Packaging

Size

500 (L) * 500 (W) * 400 (D)

Weight

1.2 T

Packaging Details

The normal package is wooden box(Size: L*W*H). If export to european countries,the wooden box will be fumigated.If container is too tigher,we will use pe film for packing or pack it according to customers special request.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are a manufacturer in ZJ China.welcome to our factory to have a visit.

Q2: How we select models and specifications?

A:You can email us the series name & code (for example: WJ series worm gearbox) as well as requirement details, such as motor power, output speed or ratio, service factor or your application…as much data as possible. If you can supply some pictures or drawings, it is better.

Q3: How is your price? Can you offer any discount?

A: We will give the best price we can base on your needs and the quantities.

Q4: How long should I wait for the feedback after I send the enquiry?

A: Within 12 hours.

Q5: What is your product warranty period?

A:We offer one year warranty since the vessel departure date left China.

Q6: What industries are your gearboxes being used?

A:Our gearboxes are widely applied to metallurgical equipment, mining equipment, automation equipment, food machinery, packaging equipment, tobacco equipment and so on.

Best China manufacturer & factory NMRV030 60 Watt 24VDC Worm Gear Motor Low Speed 22RPM High Torque with Gearbox Speed Reducer Ratio 80 1 With high quality best price

Best China manufacturer & factory NMRV030 60 Watt 24VDC Worm Gear Motor Low Speed 22RPM High Torque with Gearbox Speed Reducer Ratio 80 1 With high quality best price

Best China manufacturer & factory NMRV030 60 Watt 24VDC Worm Gear Motor Low Speed 22RPM High Torque with Gearbox Speed Reducer Ratio 80 1 With high quality best price

2020 factory Wholesale Suppliers Online china supplier NMRV 030 050 type Worm Gear Box Reducer Gearbox price with motor for robot arm

2020  factory Wholesale Suppliers Online china supplier NMRV 030 050 type Worm Gear Box Reducer Gearbox price with motor for robot arm

EPG is a single of the most significant manufacturers in China. We have sophisticated machines for generation and new technology testing capability . By means of adopting new technologies from British, German, U.S.A, our items are very best sellers all in excess of European, The us, and Southeast Asia.

Overview

Quick Details

Relevant Industries:

Manufacturing Plant

Spot of Origin:Zhejiang, China
Brand name Identify:

OEM

Pole:

1 two 3 four six Stage

Ratio:

eleven-87

Housing Content:

Solid Iron

Doing work temperature:

-40~45℃

Software:

manufacturing equipment soap

Procedure:

Carburizing, Nitriding , Grinding

Mounting Position:

Horizontal,Vertical,Flange

Color:

Blue,Green,Grey,Crimson

Packaging & Shipping

Lead Time
:
Quantity(Baggage) one – one >1
Est. Time(times) five To be negotiated

On the internet Customization

Solution Description

 

 

YOUR Skilled MANUFACTURE

—— Given that 1995

  NMRV Worm Gear Reducer Gearbox    

EPG——industrial manufacturers 

Worm Equipment Box Reducer Gearbox value with motor for robotic arm

Chinese electrical motor speed reducer is commonly utilised in mining machinery, chemical sector,metal metallurgy, gentle industry,environmental safety, paper making, printing, lifting transportation, food market and so on.  

Principal Series Product: R series helical gear reducer, K series spiral bevel gear reducer, NGW, P sequence planetary reducer, H B collection gearbox, Z (ZDY, ZLY, ZSY, and ZFY) serial hard tooth surface cylindrical equipment reducer, D (DBY and DCY) serial hard tooth surface cone gear reducer, cycloid reducer, etc. Meanwhile, map sample processing enterprise can be undertaken.

 

Cycloidal Pinwheel Reducer is a speed decreasing construction with progress design and style,novel framework adopting the principle of planet driving and the slipping-in of cycloidal pin gear. It is widely applied to the speed decreasing construction of numerous driving machineries ,these kinds of as lift ,transportation,mine,metallurgy,petrolchemical,texitile,prention,lightindustry,pharmacy,meals,forage,meals equipment,ect.

 

Specification

 NMRV Worm Gear Box Reducer Gearbox price tag with motor for robotic arm:

(remember to speak to us for more types & design)

Mounting Diamensions

 

 

Model assortment for washing machine Gear Box Transmission:

Closely using the excellent reduction ratio.

Reduction ratio = servo motor velocity / reducer output shaft velocity

Torque calculation: Torque calculation is very crucial for the lifestyle of reducer, and pay out consideration to regardless of whether the highest torque worth (TP) of acceleration exceeds the maximum load torque of the reducer.

The relevant energy is normally the relevant electrical power of the servo models on the market place, the applicability of the reducer is very higher, the doing work coefficient can be managed above 1.2, but the selection can also be primarily based on their own needs to determine.H B series normal industrial gear box reducer.Industrial Correct Angle Transmission Gearbox cost.Gearbox Manufacturer helical gear design gearbox with moderate value. NMRV 063 050 type Worm Gear Box Reducer Gearbox value for robot arm.

 

Pushed equipment
Waste water treatment Thickeners,filter presses,flocculation apparata,aerators,raking products,combined longitudinal and rotary rakes,pre-thickeners,screw pumps,h2o turbines,centrifugal pumps Dredgers Bucket conveyors, dumping products, carterpillar travelling gears, bucket wheel excavators as pick up, bucket wheel excavator for primitive material, cutter head, traversing gears
Chemical sector Plate bending devices, extruders, dough mills, rubbers calenders, cooling drums, mixers for uniform media, agitators for media with uniform density, toasters, centrifuges Metallic operating mills plate tilters, ingot pushers, winding equipment, cooling bed transfer frames, roller straigheners, desk steady intermittent, roller tables reversing tube mills, shears continuous, casting drivers, reversing blooming mills
Steel operating mills Reversing slabbing mills. reversing wire mills, reversing sheet mills, reversing plate mill, roll adjustment drives Conveyors Bucket conveyors, hauling winches, hoists, belt conveyors, good lifts, passenger lifts, apron conveyors, escalators, rail travlling gears
Frequency converters Reciprocating compressors
Cranes Slewing gears, luffing gears, travelling gears, hoisting equipment, derricking jib cranes Cooling towers Cooling tower followers, blowers axial and radial
Cane sugar creation Cane knives, cane mills Beet sugar manufacturing Beet cossettes macerators, extraction plants, mechanical refrigerators, juice boilers, sugar beet washing devices, sugar beet cutter
Paper equipment Pulper drives Cableways Substance ropeways, constant ropeway
Cement sector Concrete mixer, breaker, rotary kilns, tube mills, separators, roll crushers    

Technological innovation

 

Attribute:

  • 1. Big Volecity- Decreasing Ratio:Ratio of single-stage speed-minimizing is one/eleven-1/87 Ratio of double stage velocity-decreasing is 1/112-one/5133Ratio of 3-phase velocity-lowering is 1/2057-one/446571more-phases can be blended in accordance to the necessity.
  • two. High driving efficiency:Owing to adopting rolling engagement in falling-in part, the driving efficiency can achieve previously mentioned ninety%.

  • three. Small in size, mild weight: with compacted structure,modest measurement and gentle excess weight. Due to adopting the basic principle of world driving so that the enter and output shaft in the exact same axis which will built-in with the motor.

  • four. Long service lifestyle: Has good resistance to abrasion due to the fact the primary driving participating components are produced of bearing steel and making use of rolling friction.

  • five. Stable managing: for most driving method, we undertake multi-teeth slipping-in. Then the operating will be steady with lower sound.

  • 6. Convenient dismounting:affordable structure and design and style.

  • seven. Strong overloading ability,anti-compact,appropriate for frequently start and double-facet rotation.  

Chinese Speed Reducer is a mechanical transmission in numerous fields of the national economic system. The product types lined by the market contain all sorts of gear reducer, planetary equipment reducer and worm gearbox, as nicely as a variety of specific transmission units this sort of as pace rising unit, speed manage Devices, which includes different varieties of versatile transmission products, these kinds of as compound transmission. Items and solutions in the discipline of metallurgy, nonferrous metals, coal, building supplies, ships, h2o conservancy, electric power, construction equipment and petrochemical industries.

 

In all fields of national economy and national protection business, gearbox items have a extensive range of applications. Food light industry, electric machinery, construction equipment, metallurgy machinery, cement equipment, environmental protection machinery, digital appliances, road development equipment, h2o conservancy machinery, chemical machinery, mining machinery, conveyor machinery, creating materials machinery, rubber machinery, petroleum equipment and other industries have sturdy desire of Reducer merchandise.Industrial Right Angle Transmission Gearbox price tag.Gearbox Producer helical gear style gearbox with moderate cost.Chinese Manufacture cycloid gearbox for iron and steel sector. NMRV 063 050 kind Worm Equipment Box Reducer Gearbox cost for robot arm.

Our Solutions

 

Packaging & Delivery

 

Business Information

    Launched in 1995,EPG Power machinery Co.,Ltd  has 22 many years of reducer production encounter and credibility. The business has professional engineer crew, sophisticated engineering creation and expert staff, with located in HangZhou which has reliable industrial base and created transportation.

FAQ

 1.Q:Are you the manufacturing facility or trading organization?

    A:We are the professional Manufacturing unit with 22 several years of expertise.

 

two.Q:Can you customise in accordance to our specifications?

   A:Indeed, we can style nonstandard goods according to customer’s drawing and sample.

 

three.Q:How extended is the delivery day?

   A:10-20 functioning times.

 

four.Q:Exactly where is your manufacturing facility?

   A:We are in Zibo of Shandong Province, you can get here by higher speed prepare or fly to Jinan.

   Welcome to visit us!

2020  factory Wholesale Suppliers Online china supplier NMRV 030 050 type Worm Gear Box Reducer Gearbox price with motor for robot arm

2020  factory Wholesale Suppliers Online china supplier NMRV 030 050 type Worm Gear Box Reducer Gearbox price with motor for robot arm

2020  factory Wholesale Suppliers Online china supplier NMRV 030 050 type Worm Gear Box Reducer Gearbox price with motor for robot arm