Product Description
JMG series valve worm gearbox from ZHangZhoug CHINAMFG Auto-tech Co.,Ltd has the advantage of high transmission efficiency and it has the stable self-locking design. Users can adjust the speed ratio based on their real using condition. Also, JMG valve worm gearbox can achieve 90 degree rotation, which can be widely used in ball valve, butterfly valve and other quarter turn valves. JMG series adopts 45cr material shaft, which has the higher level strength. Also, the surface has undergone carbonization treatment, greatly improve the whole strength, and guarantee its ability to work in the hard using condition. CHINAMFG provides wider range of using temprature from -45°C until 180°C. JMG worm gearbox has the superior gear contact ratio, CHINAMFG can guarantee only have 0.1mm process difference.By using our gearbox, it can help to achieve more precise, more confortable valve control.
| Model | JMG series worm gearbox |
| Action | Smooth and reliable |
| Weather proof | IP67, option IP68 |
| Temperature | -45°C~180°C |
| Rotation range | ±5°for the rotation at 0°and 90° |
| Output torque | 260NM~58000NM |
| Speed ratio | Adjustable |
| Model | Speed ratio | Input torque N•m |
Output torque N•m |
Flange Size | Maximum stem diameter | Maximum install height | Handwheel diameter |
| JMG15 | 27 | 32 | 260 | (F05)F07 | 20 | 55 | 200 |
| JMG20 | 37 | 47 | 520 | F07/F10 | 28 | 58 | 200 |
| JMG21 | 38 | 75 | 850 | F10/F12/F14 | 36 | 63 | 300 |
| JMG30 | 40 | 113 | 1350 | F12/F14/F16 | 48 | 85 | 350 |
| JMG55 | 47 | 142 | 2000 | (F12)/F14/F16 | 53 | 90 | 350 |
| JMG58 | 55 | 152 | 2500 | F16/F20 | 62 | 95 | 400 |
| JMG88 | 61 | 164 | 3000 | (F14)/F16/F20/F25 | 65 | 105 | 500 |
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| Function: | Manual Operate |
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| Layout: | Three-Ring |
| Hardness: | Soft Tooth Surface |
| Samples: |
US$ 16.6/Piece
1 Piece(Min.Order) | Order Sample |
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| 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.
Worm Gearbox vs. Helical Gearbox: A Comparison
Worm gearboxes and helical gearboxes are two popular types of gear systems, each with its own set of advantages and disadvantages. Let’s compare them:
| Aspect | Worm Gearbox | Helical Gearbox |
| Efficiency | Lower efficiency due to sliding friction between the worm and worm wheel. | Higher efficiency due to rolling contact between helical gear teeth. |
| Torque Transmission | Excellent torque transmission and high reduction ratios achievable in a single stage. | Good torque transmission, but may require multiple stages for high reduction ratios. |
| Noise and Vibration | Generally higher noise and vibration levels due to sliding action. | Lower noise and vibration levels due to smoother rolling contact. |
| Backlash | Higher inherent backlash due to the design. | Lower backlash due to meshing of helical teeth. |
| Efficiency at Higher Speeds | Less suitable for high-speed applications due to efficiency loss. | More suitable for high-speed applications due to higher efficiency. |
| Overload Protection | Natural self-locking feature provides some overload protection. | May not have the same level of inherent overload protection. |
| Applications | Commonly used for applications requiring high reduction ratios, such as conveyor systems and heavy-duty machinery. | Widely used in various applications including automotive transmissions, industrial machinery, and more. |
Both worm and helical gearboxes have their place in engineering, and the choice between them depends on the specific requirements of the application. Worm gearboxes are preferred for applications with high reduction ratios, while helical gearboxes are chosen for their higher efficiency and smoother operation.
Lubrication Requirements for a Worm Gearbox
Lubrication is crucial for maintaining the performance and longevity of a worm gearbox. Here are the key considerations for lubricating a worm gearbox:
- Type of Lubricant: Use a high-quality, high-viscosity lubricant specifically designed for worm gearboxes. Worm gearboxes require lubricants with additives that provide proper lubrication and prevent wear.
- Lubrication Interval: Follow the manufacturer’s recommendations for lubrication intervals. Regularly check the gearbox’s temperature and oil condition to determine the optimal frequency of lubrication.
- Oil Level: Maintain the proper oil level to ensure effective lubrication. Too little oil can lead to insufficient lubrication, while too much oil can cause overheating and foaming.
- Lubrication Points: Identify all the lubrication points on the gearbox, including the worm and wheel gear surfaces. Apply the lubricant evenly to ensure complete coverage.
- Temperature: Consider the operating temperature of the gearbox. Some lubricants have temperature limits, and extreme temperatures can affect lubricant viscosity and performance.
- Cleanliness: Keep the gearbox and the surrounding area clean to prevent contaminants from entering the lubricant. Use proper filtration and seals to maintain a clean environment.
- Monitoring: Regularly monitor the gearbox’s temperature, noise level, and vibration to detect any signs of inadequate lubrication or other issues.
Proper lubrication will reduce friction, wear, and heat generation, ensuring smooth and efficient operation of the worm gearbox. Always refer to the manufacturer’s guidelines for lubrication specifications and intervals.
editor by CX 2024-02-24
