China wholesaler Yj Series Part-Turn Manual Valve Worm Gearbox for Ball Valves gearbox definition

Product Description

Product Description


YJ series Part-turn worm gearboxes suitable for Ball Valves, Butterfly Valves, Plug Valves,etc. Handwheel can choose according to your requirements.
YJ series part-turn worm gearbox has good mechanical quality and steady operating performance. It has high mechanical efficiency, small size with new design, and it’s very easy to operate. The flange connecting to valve is according to ISO5211.

Product Parameters


Model YJ-0 YJ-1 YJ-2 YJ-2J YJ-3 YJ-3J YJ-4 YJ-4J YJ-5 YJ-5J YJ-6
Ratio 34:1 44:1 44:1 50:1 50:1 53:1 55:1 67:1 62:1 67:1 65:1
Max output torque
500 1000 1500 2500 3200 4500 4950 5200 5580 6030 6825
Max stem diameter 30
Flange F10 F12 F14 F16 F16 F16/F20 F25 F30 F30 F35 F35
φD 125 150 175 210 210 250 300 350 350 415 415
PCD D0 102 125 140 165 165 205 254 298 298 356 356
N-H-DP 4-M10-15 4-M12-18 4-M16-20 4-M20-30 4-M20-30 8-M16-24 8-M16-24 8-M20-30 8-M20-30 8-M30-45 8-M30-40
Handwheel 250 350 400 450 500 600 600 650 750 800 900


Company Profile



Q: What’s your main products?
A: Our main products are worm gearbox, bevel gearbox and spur gearbox for gate valve, globe valve, ball valve, butterfly valve and etc.

Q: How long is your delivery time?
A: Delivery time was depends on the quantity of the order and our inventory, normally is 10~15 days.

Q: Term of payment?
A: T/T 30% in advance, T/T balance before shipment.

Q: Can you provide free sample?
A: Yes, we can provide the sample for free, but the shipping costs need paid by yourself.

Q: Could you specially design and produce according to client’s requirements?
A: Yes, we can

If any other questions about our products, welcome to contact us.

Shipping Cost:

Estimated freight per unit.

To be negotiated
Application: Industry Valves
Function: Change Drive Torque
Step: Single-Step


Customized Request


How to Choose the Right Gearbox for Your Machinery

Selecting the appropriate gearbox for your machinery involves careful consideration of several key factors. Here’s a step-by-step guide to help you make the right choice:

  1. Identify Application Requirements: Understand the specific requirements of your machinery, including torque, speed, load, direction of rotation, and duty cycle.
  2. Choose Gear Type: Determine the type of gears that best suit your needs, such as spur, helical, bevel, planetary, or others, based on factors like efficiency, noise level, and space constraints.
  3. Calculate Gear Ratio: Calculate the required gear ratio to achieve the desired output speed and torque. Consider factors like input and output shaft speeds.
  4. Select Gear Material: Choose appropriate gear materials based on factors like durability, wear resistance, and corrosion resistance. Common materials include steel, cast iron, and various alloys.
  5. Consider Efficiency: Evaluate the gearbox’s efficiency and select one that meets your energy efficiency requirements.
  6. Account for Load Conditions: Analyze the load conditions, such as constant or intermittent loads, shock loads, and starting and stopping frequencies.
  7. Check Lubrication Requirements: Consider the lubrication needs of the gearbox and ensure proper lubrication for smooth operation and longevity.
  8. Factor in Space Constraints: Consider the available space for installing the gearbox and choose a size that fits within your machinery.
  9. Assess Environmental Conditions: Evaluate the operating environment, including temperature, humidity, and exposure to dust or corrosive substances.
  10. Review Mounting Options: Determine the mounting options that work best for your machinery, such as foot-mounted, flange-mounted, or shaft-mounted gearboxes.
  11. Consult with Experts: Seek advice from gearbox manufacturers or engineers to ensure you make an informed decision.

Choosing the right gearbox is crucial for achieving optimal machinery performance, longevity, and reliability.

China wholesaler Yj Series Part-Turn Manual Valve Worm Gearbox for Ball Valves   gearbox definition		China wholesaler Yj Series Part-Turn Manual Valve Worm Gearbox for Ball Valves   gearbox definition
editor by CX 2023-09-25