China OEM Yjq Series Part-Turn Manual Valve Worm Gearbox for Ball Valves differential gearbox

Product Description

Product Description

YJQ series Part-turn worm gearboxes suitable for Ball Valves, Butterfly Valves, Plug Valves,etc. Handwheel can choose according to your requirements.
 
YJQ 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 YJQ-3 YJQ-5 YJQ-8 YJQ-12 YJQ-16 YJQ-20 YJQ-26 YJQ-30 YJQ-40
Ratio 36:1 42:1 48:1 48:1 54:1 46:1 56:1 53:1 55:1
Max output torque
N.m
300 500 800 1200 1600 2000 2600 3000 4000
Max stem diameter 30 35 40 45 50 55 65 70 80
Flange F07 F10 F07 F10 F10 F12 F12 F14 F16 F14 F16 F14 F16 F14 F16 F25 F16 F20 F25 F16 F20 F25
φD 90 125 90 125 125 150 150 175 210 175 210 175 210 175 210 300 210 255 300 210 255 300
PCD D0 70 102 70 102 102 125 125 140 165 140 165 140 165 140 165 245 165 205 254 165 205 254
N-H-DP 4-M8-12 4-M10
-15
4-M8-12 4-M10
-15
4-M10
-18
4-M12
-18
4-M12
-18
4-M16
-24
4-M20
-30
4-M16
-24
4-M20
-30
4-M16
-24
4-M20
-30
4-M16
-24
4-M20
-30
4-M16
-24
4-M20
-30
8-M16
-24
8-M16
-24
4-M20
-30
8-M16
-24
8-M16
-24
Installation height 58 61 69 78 83 86 91 104 110
Handwheel 200 200 300 400 500 500 600 600 600

 

Company Profile

FAQ

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.

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Application: Industry
Function: Change Drive Torque
Layout: Worm and Wormwheel
Customization:
Available

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Customized Request

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Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

worm gearbox

Can a Worm Gearbox be Used for High-Speed Applications?

Worm gearboxes are generally not recommended for high-speed applications due to their inherent design characteristics. Here’s why:

  • Efficiency: Worm gearboxes tend to have lower efficiency compared to other gearbox types, which means they can generate more heat and experience more energy loss at high speeds.
  • Heat Generation: The sliding contact between the worm and worm wheel in a worm gearbox can lead to significant friction and heat generation, especially at high speeds. This heat can cause thermal expansion, affecting the gearbox’s performance and longevity.
  • Wear and Noise: High speeds can exacerbate wear and noise issues in worm gearboxes. Increased friction and wear can lead to faster degradation of components, resulting in reduced lifespan and increased maintenance needs.
  • Backlash: Worm gearboxes may have higher backlash compared to other gearbox types, which can impact precision and accuracy in high-speed applications.

While worm gearboxes are more commonly used in applications requiring high torque and moderate speeds, they may not be the best choice for high-speed scenarios. If high-speed operation is a requirement, other gearbox types such as helical, spur, or planetary gearboxes are often better suited due to their higher efficiency, lower heat generation, and reduced wear at elevated speeds.

worm gearbox

Materials Used for Worm Gears

Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:

  • Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
  • Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
  • Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
  • Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
  • Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
  • Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.

The choice of material depends on factors such as the application’s load, speed, operating environment, and required performance characteristics. It’s important to consider these factors when selecting the appropriate material for worm gears to ensure optimal performance and longevity.

worm gearbox

Advantages of Using a Worm Reducer in Mechanical Systems

Worm reducers offer several advantages that make them suitable for various mechanical systems:

  • High Gear Reduction Ratio: Worm gearboxes provide significant speed reduction, making them ideal for applications that require a high gear reduction ratio without the need for multiple gears.
  • Compact Design: Worm reducers have a compact and space-saving design, allowing them to be used in applications with limited space.
  • Self-Locking: Worm gearboxes exhibit self-locking properties, which means that the worm screw can prevent the worm wheel from reversing its motion. This is beneficial for applications where the gearbox needs to hold a load in place without external braking mechanisms.
  • Smooth and Quiet Operation: Worm gearboxes operate with a sliding motion between the teeth, resulting in smoother and quieter operation compared to some other types of gearboxes.
  • High Torque Transmission: Worm gearboxes can transmit high torque levels, making them suitable for applications that require powerful torque output.
  • Heat Dissipation: The sliding action between the worm screw and the worm wheel contributes to heat dissipation, which can be advantageous in applications that generate heat during operation.
  • Stable Performance: Worm reducers offer stable and reliable performance, making them suitable for continuous operation in various industrial and mechanical systems.

Despite these advantages, it’s important to note that worm gearboxes also have limitations, such as lower efficiency compared to other gear types due to the sliding motion and potential for higher heat generation. Therefore, selecting the appropriate type of gearbox depends on the specific requirements and constraints of the application.

China OEM Yjq Series Part-Turn Manual Valve Worm Gearbox for Ball Valves   differential gearbox	China OEM Yjq Series Part-Turn Manual Valve Worm Gearbox for Ball Valves   differential gearbox
editor by CX 2024-02-23

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