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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Calculating Gear Ratio in a Worm Reducer
The gear ratio in a worm reducer is determined by the number of teeth on the worm wheel (also known as the worm gear) and the number of threads on the worm shaft. The gear ratio formula for a worm reducer is:
Gear Ratio = Number of Teeth on Worm Wheel / Number of Threads on Worm Shaft
For example, if the worm wheel has 60 teeth and the worm shaft has a single thread, the gear ratio would be 60:1.
It’s important to note that worm reducers have an inherent self-locking property due to the angle of the worm threads. As a result, the gear ratio also affects the mechanical advantage and the system’s ability to resist backdriving.
When calculating the gear ratio, ensure that the worm reducer is properly designed and that the gear ratio aligns with the desired mechanical characteristics for your application. Additionally, consider factors such as efficiency, load capacity, and speed limitations when selecting a gear ratio for a worm reducer.
Does a Worm Reducer Require Frequent Maintenance?
Worm reducers generally require less frequent maintenance compared to some other types of gearboxes due to their design and operating characteristics. However, maintenance is still essential to ensure optimal performance and longevity. Here are some key points to consider:
- Lubrication: Proper lubrication is crucial for worm gearboxes. Regularly check the lubricant level and quality to prevent wear and overheating. Lubricant should be changed as recommended by the manufacturer.
- Inspections: Periodically inspect the gearbox for signs of wear, damage, or oil leaks. Check for any unusual noises, vibrations, or changes in performance that could indicate a problem.
- Tightening and Alignment: Check and tighten any loose fasteners and ensure that the gearbox is properly aligned. Misalignment can lead to increased wear and reduced efficiency.
- Seal Maintenance: Inspect and maintain seals to prevent oil leakage and contaminants from entering the gearbox.
- Cleaning: Keep the gearbox clean from debris and contaminants that could affect its performance. Regular cleaning can prevent premature wear and damage.
- Load and Speed: Ensure that the gearbox is operating within its rated load and speed limits. Exceeding these limits can lead to accelerated wear and potential failure.
- Environmental Conditions: Consider the operating environment of the gearbox. Extreme temperatures, humidity, and other factors can impact the gearbox’s performance and longevity.
While worm gearboxes are known for their durability and self-locking feature, neglecting maintenance can lead to premature wear, reduced efficiency, and potential breakdowns. Following the manufacturer’s recommendations for maintenance intervals and procedures is essential to keep the worm reducer in optimal condition.
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 2024-02-23
