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 N.m |
500 | 1000 | 1500 | 2500 | 3200 | 4500 | 4950 | 5200 | 5580 | 6030 | 6825 | |
| Max stem diameter | 30 8×7 |
42 12×8 |
50 14×9 |
60 18×11 |
60 18×11 |
75 25×14 |
90 22×14 |
110 28×16 |
110 28×16 |
120 32×18 |
120 32×18 |
|
| 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
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 Valves |
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| Function: | Change Drive Torque |
| Step: | Single-Step |
| Customization: |
Available
| Customized Request |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Is it Possible to Reverse the Direction of a Worm Gearbox?
Yes, it is possible to reverse the direction of a worm gearbox by changing the orientation of either the input or output shaft. However, reversing the direction of a worm gearbox can have some implications that need to be considered:
- Efficiency: Reversing the direction of a worm gearbox can potentially affect its efficiency. Worm gearboxes are typically more efficient in one direction of rotation due to the design of the worm and worm wheel.
- Backlash: Reversing the direction of rotation might lead to increased backlash or play in the gearbox, which can impact precision and smooth operation.
- Lubrication: Depending on the gearbox’s design, reversing the direction could affect lubrication distribution and lead to uneven wear on the gear teeth.
- Load: Reversing the direction might also impact the gearbox’s load-carrying capacity, especially if it’s designed for predominantly one-way operation.
- Noise and Vibration: Direction reversal can sometimes result in increased noise and vibration due to changes in gear engagement and meshing behavior.
If you need to reverse the direction of a worm gearbox, it’s advisable to consult the gearbox manufacturer’s guidelines and recommendations. They can provide insights into whether the specific gearbox model is suitable for reversible operation and any precautions or adjustments needed to ensure proper functioning.
How to Calculate the Efficiency of a Worm Gearbox
Calculating the efficiency of a worm gearbox involves determining the ratio of output power to input power. Efficiency is a measure of how well the gearbox converts input power into useful output power without losses. Here’s how to calculate it:
- Step 1: Measure Input Power: Measure the input power (Pin) using a power meter or other suitable measuring equipment.
- Step 2: Measure Output Power: Measure the output power (Pout) that the gearbox is delivering to the load.
- Step 3: Calculate Efficiency: Calculate the efficiency (η) using the formula: Efficiency (η) = (Output Power / Input Power) * 100%
For example, if the input power is 1000 watts and the output power is 850 watts, the efficiency would be (850 / 1000) * 100% = 85%.
It’s important to note that efficiencies can vary based on factors such as gear design, lubrication, wear, and load conditions. The calculated efficiency provides insight into how effectively the gearbox is converting power, but it’s always a good practice to refer to manufacturer specifications for gearbox efficiency ratings.
Can a Worm Gearbox Provide High Torque Output?
Yes, a worm gearbox is capable of providing high torque output due to its unique design and principle of operation. Worm gears are known for their high torque multiplication capabilities, making them suitable for applications that require significant torque transfer.
The torque output of a worm gearbox is influenced by several factors:
- Lead Angle: The lead angle of the worm affects the mechanical advantage of the gear system. A larger lead angle can result in higher torque output.
- Worm Diameter: A larger diameter worm can offer increased torque output as it provides more contact area with the gear.
- Gear Ratio: The gear ratio between the worm and the gear determines the torque multiplication factor. A higher gear ratio leads to higher torque output.
- Lubrication: Proper lubrication is essential to minimize friction and ensure efficient torque transmission.
- Material and Quality: High-quality materials and precision manufacturing contribute to the gearbox’s ability to handle high torque loads.
Due to their ability to provide high torque output in a compact form factor, worm gearboxes are commonly used in various industrial applications, including heavy machinery, construction equipment, conveyor systems, and more.
editor by CX 2024-03-04