Product Description
Product Parameters
Editing and broadcasting of main materials
1. Body, die-casting aluminum alloy;
2. Worm shaft, 20 Crq steel, high temperature treatment;
3. Worm gear, nickel bronze alloy;
4. Aluminum alloy body, sandblasting and surface anti-corrosion treatment;
5. Cast iron body, painted with bIu RA5571.
Regular center distance specification editing and broadcasting
Center distance: 130 (unit: mm).
Output hole/shaft diameter: 11, 14, 18, 25, 28, 35, 42, 45 (unit: mm)
Detailed Photos
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NMRV-063-30-VS–AS-80B5-0.75KW-B3 |
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NMRV |
Means hole-input with flange |
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NRV |
Means shaft-input without flange |
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063 |
Centre-to-centre spacing of worm-gear speed reducer |
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30 |
ratio |
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VS |
Double input shaft |
F1(FA) |
Flange putput shaft |
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AS |
Single output shaft |
AB |
Double output shaft |
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PAM |
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80B5 |
Motor mounting facility |
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0.75KW |
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B3 |
Mounting position |
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N2 |
NRV571 |
NRV030 |
NRV040 |
NRV050 |
NRV063 |
NRV075 |
NRV090 |
NRV110 |
NRV130 |
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400 |
390 |
530 |
1571 |
1400 |
1830 |
2160 |
2390 |
3571 |
3950 |
|
250 |
460 |
620 |
1200 |
1650 |
2150 |
2520 |
2800 |
3530 |
4610 |
|
150 |
550 |
740 |
1420 |
1960 |
2450 |
2990 |
3310 |
4180 |
5470 |
|
100 |
630 |
850 |
1620 |
2250 |
2910 |
3430 |
3800 |
4790 |
6260 |
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60 |
740 |
1000 |
1920 |
2660 |
3450 |
4060 |
4500 |
5680 |
7420 |
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40 |
850 |
1150 |
2200 |
3050 |
3950 |
4650 |
5150 |
6500 |
8500 |
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25 |
990 |
1350 |
2570 |
3570 |
4620 |
5440 |
6571 |
7600 |
9940 |
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10 |
1350 |
1830 |
3490 |
4840 |
6270 |
7380 |
8180 |
10320 |
13500 |
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A |
50 |
65 |
84 |
101 |
120 |
131 |
162 |
191 |
203 |
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B |
38 |
50 |
64 |
76 |
95 |
101 |
122 |
151 |
163 |
Use and safety guarantee
1. Please check and confirm the matching intensity between worm gear reducer and mechanical equipment before use to assure that it is in the safety range of worm gear reducer performance parameters
2. Worm gear reducer has filled with WA460 lubricating oil. Please replace the lubricating oil after the first starting of 400 hours and after then 4000 hours for lubricating oil replacing cycle
3. There should be enough lubrication in worm gear box and keep regular check with the oil level.
4. When installation. please be careful to avoid sharp instruments bruising the oil seals on output shaft to cause leakage
5. Please confirm the rotation direction before mechanical connection. If the rotation direction is not correct, it will possible injury or damage the devices
6. Please set safety covers in rotating position to avoid of injuring
7. Please pay full attention: it is very dangerous if there is off or falling when movin
| Hardness: | Hardened Tooth Surface |
|---|---|
| Installation: | 90 Degree |
| Layout: | Expansion |
| Gear Shape: | Bevel Gear |
| Step: | Single-Step |
| Type: | Gear Reducer |
| Samples: |
US$ 30/Piece
1 Piece(Min.Order) | |
|---|
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.
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.
Preventing Backlash in a Worm Gearbox
Backlash in a worm gearbox can lead to reduced accuracy, positioning errors, and decreased overall efficiency. Here are steps to prevent or minimize backlash:
- High-Quality Components: Use high-quality worm gears and worm wheels with tight manufacturing tolerances. Precision components will help reduce backlash.
- Proper Meshing: Ensure the worm gear and worm wheel are properly aligned and meshed. Improper meshing can lead to increased backlash.
- Preload: Applying a small amount of preload to the worm gear can help reduce backlash. However, excessive preload can increase friction and wear.
- Anti-Backlash Mechanisms: Consider using anti-backlash mechanisms, such as spring-loaded systems or adjustable shims, to compensate for any inherent backlash.
- Lubrication: Proper lubrication can reduce friction and play a role in minimizing backlash. Use a lubricant that provides good film strength and reduces wear.
- Maintenance: Regularly inspect and maintain the gearbox to identify and address any changes in backlash over time.
It’s important to strike a balance between reducing backlash and maintaining smooth operation. Consulting with gearbox experts and following manufacturer guidelines will help you optimize your worm gearbox’s performance while minimizing backlash.
editor by CX 2023-09-15