Product Description
NMRV REDUCTION WORM GEARBOX
NMRV 150 worm gear motor for general industrial use refers to angular type drives. The unit provides high output torque (up to 1760 N * m), withstands significant radial loads (up to 18 000 N). Robust cast iron body gear motor has a protective coating. Mounting options: feet / flange.
Additional options:
- reactive rod for reactive torque compensation
- outlet flange for securing to the frame
- variator attachment for regulating the output shaft rotation speed
- torque limiter
Materials parts:
Body – iron, flanges – iron, worm – steel CHINAMFG worm wheel – bronze.
Type of lubricant: synthetic ISO VG 220.
Weight: 84 kg.
Type designation scheme
NMRV – 150 – 7.5 – 186.7 – 15 – B7
- NMRV – worm gear motor
- 150 – size (center distance, mm)
- 7.5 – gear ratio
- 186.7 – output shaft rotation speed, rpm
- 15 – electric motor power, kW
- B7 – mounting position
NMRV 150 gearbox performance
| i | n 1 = 2800 rpm | n 1 = 1400 rpm | n 1 = 900, rpm | |||||||||
| n 2 , rpm |
T 2M , N * m |
P kw |
RD % |
n 2 , rpm |
T 2M , N * m |
P kw |
RD % |
n 2 , rpm |
T 2M , N * m |
P kw |
RD % |
|
| 7.5 | 373 | 862 | 36.20 | 93 | 187 | 1162 | 25.30 | 91 | 120 | 1410 | 19.90 | 89 |
| 10 | 280 | 879 | 28.00 | 92 | 140 | 1197 | 19.50 | 90 | 90 | 1429 | 15.30 | 88 |
| 15 | 187 | 924 | 20.10 | 90 | 93 | 1250 | 2 p.m. | 87 | 60 | 1488 | 11.00 | 85 |
| 20 | 140 | 990 | 16.30 | 89 | 70 | 1320 | 11.25 | 86 | 45 | 1550 | 8.80 | 83 |
| 25 | 112 | 920 | 12.00 | 90 | 56 | 1203 | 8.30 | 85 | 36 | 1414 | 6.50 | 82 |
| 30 | 93 | 900 | 10.30 | 85 | 47 | 1138 | 7.00 | 80 | 30 | 1348 | 5.50 | 77 |
| 40 | 70 | 1234 | 10.90 | 83 | 35 | 1596 | 7.50 | 78 | 23 | 1837 | 5.90 | 75 |
| 50 | 56 | 1091 | 7.90 | 81 | 28 | 1426 | 5.50 | 76 | 18 | 1665 | 4.30 | 73 |
| 60 | 47 | 1571 | 6.30 | 80 | 23 | 1370 | 4.40 | 75 | 15 | 1582 | 3.50 | 71 |
| 80 | 35 | 884 | 4.50 | 72 | 18 | 1102 | 3.10 | 67 | 11 | 1354 | 2.40 | 65 |
| 100 | 28 | 848 | 3.50 | 71 | 14 | 1080 | 2.40 | 66 | 9 | 1250 | 1.90 | 62 |
- n1 – rotational speed el. engine;
- n2 – revolutions on the output shaft;
- T 2M – torque on the output shaft;
- P is the maximum allowable engine power;
- RD – efficiency
GEARBOX FEATURE
| 1.Good quality,long life time,low noise. |
| 2.Compact,convenient. |
| 3.High efficiency,big torque. |
Overall and mounting dimensions NMRV 150
NMRV150 gear motor has a wide range of gear ratios.
Gear ratios: 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 .
Output flange to NMRV 150 gearbox
Geared NMRV150 can be supplied with unilateral or bilateral output shaft.
The gearbox comes standard with a hollow output shaft
A torque arm is an additional option to the gearbox.
| Model | NMRV SERIES |
| Single Stage | RV25-RV150 |
| Ratio | 7.5-100 |
| Input Power | 0.06KW-15KW |
| Output Speed | 14-280rpm |
| Output Torque | 5-1800Nm |
| Core parts | worm wheel,worm shaft |
| Core parts material | worm shaft:20 Cr Mn Ti,worm wheel:Nodular cast iron interal,9-4 copper external |
| Lubrication | RV30-90:synthetic oil, RV110-150:GN460-W mineral oil |
| Bearings | C&U |
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| Application: | Motor, Motorcycle, Machinery, Agricultural Machinery, Industry |
|---|---|
| Hardness: | Hardened |
| Installation: | Any Angle |
| Gear Shape: | Worm Gear |
| Step: | Single-Step |
| Type: | Worm and Wormwheel |
| Samples: |
US$ 20/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Noise Levels Associated with Worm Gearboxes?
The noise levels associated with worm gearboxes can vary depending on several factors, including the design, quality, operating conditions, and maintenance of the gearbox. Here are some key points to consider:
- Design and Quality: Well-designed and high-quality worm gearboxes tend to produce lower noise levels. Factors such as gear tooth profile, precision manufacturing, and proper alignment can contribute to reduced noise.
- Gear Engagement: The way the worm and worm wheel engage and mesh with each other can impact noise levels. Proper tooth contact and alignment can help minimize noise during operation.
- Lubrication: Inadequate or improper lubrication can lead to increased friction and wear, resulting in higher noise levels. Using the recommended lubricant and maintaining proper lubrication levels are important for noise reduction.
- Operating Conditions: Operating the gearbox within its specified load and speed limits can help prevent excessive noise generation. Overloading or operating at high speeds beyond the gearbox’s capabilities can lead to increased noise.
- Backlash: Excessive backlash or play between the gear teeth can lead to impact noise as the teeth engage. Proper backlash adjustment can help mitigate this issue.
- Maintenance: Regular maintenance, including gear inspection, lubrication checks, and addressing any wear or damage, can help keep noise levels in check.
It’s important to note that while worm gearboxes can produce some noise due to the nature of gear meshing, proper design, maintenance, and operation can significantly reduce noise levels. If noise is a concern for your application, consulting with gearbox manufacturers and experts can provide insights into selecting the right gearbox type and implementing measures to minimize noise.
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.
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 2024-02-22