Product Description
HangZhou CHINAMFG Machinery Co., Ltd.has been specialising in the manufacture and export of RV series worm gearboxes and other power transmission products for years, dedicated to provide to our customers good quality products in competitive prices. The main products are RV series worm gear speed reducers, UD series mechanical speed variators, G3 series helical geared motors and the specially designed reducers for polishing machines. Our products are widely used in the mechanical apparatus for foodstuff, ceramics, package, chemical, printing, and plastics, etc.
Xihu (West Lake) Dis.d by the idea, “Quality is the very key.”. the company proceeds in strict quality control to all the products, complying with the requirements of ISO9001:2008, and certificated, which has enabled our products to have enjoyed the successful sales, popularity and good reputation among the markets of Europe, Mid-east, and Souteast Asia..
Innovation, good quality, customers’ satisfication, and excellent service are the principles of the company. All customers at home and abroad are warmly welcome to contact us and negotiate for mutual business expansion.
Characteristics:
RV series worm gearbox / speed reducer is a new generation of products developed by our company with combination of advanced technology both at home and abroad. It feature in:
1) Aluminium alloy die cast casing for RV 571,030,040,050,063,075,090,light weight and non-rusting;cast iron casing for RV110,130,150.
2) large output torque.
3) stable transmission with lower noise.
4) high geat-radiation efficiency.
5) elegant shape,small volume and durable serving life
6) suitable for omnibearing installation
Model & Mark :NMRV 063-40 E F1 AZ B3
| NMRV | NMRV means hole input with flange | NRV means shaft input without flange | ||||||
| 063 | Distance between the centers of worm and worm gear | |||||||
| 40 | Speed ratio of worm gear speed reducer | |||||||
| E | “E” means double extension worm shaft, no mark means single extension worm shaft | |||||||
| F1 | “F” means output flange, “FL” means high output flange,no mark means output without flange | |||||||
| AZ | “AZ”means bidirectional output shaft, “GZ”means unilateral output shaft and no mark means hole output | |||||||
| B3 | Installation position code | |||||||
The speed reducer NMRV063/030 Accessories outline dimension
| K1 | G | KG | KH | R | |
| NMRV063 | 150 | 14 | 49 | 10 | 18 |
Speed reducer Size of Single Extension & Double extension
| D(h6) | B | B1 | G1 | L | L1 | f | b1 | t1 | |
| NMRV063 | 25 | 50 | 53.5 | 112 | 173 | 219 | M10 | 8 | 28 |
Worm gearbox of Double extension worm shaft
| G2 | d(j6) | B | F | b1 | t1 | |
| NMRV063 | 75 | 19 | 40 | M6 | 6 | 21.5 |
The Worm gearbox NMRV063/030 With Motor
| IEC Motor adapters | ||||||
| Model | PAM(IEC) | N | M | P | ration | Shaft:D |
| NMRV030 |
63B5 | 95 | 115 | 140 | 7.5 | 11 |
| 63B14 | 60 | 75 | 90 | 7.5 | 11 | |
| 56B5 | 80 | 100 | 120 | 7.5 | 9 | |
| 56B14 | 50 | 65 | 80 | 7.5 | 9 | |
| NMRV063 | 90B5 | 130 | 165 | 200 | 40 | – |
| 90B14 | 95 | 115 | 140 | 40 | – | |
| 80B5 | 130 | 165 | 200 | 40 | 19 | |
| 80B14 | 80 | 100 | 120 | 40 | 19 | |
| 71B5 | 110 | 130 | 160 | 40 | 14 | |
| 71B14 | 70 | 85 | 105 | 40 | 14 | |
Worm gearbox of Mounting positions
Worm gearbox of Position diagram for output flange
Worm gearbox of position diagram for torque arm
Worm gearbox of position diagram for one-way output shaft
Notice for ordering:
1) when ordering,please refer to the details of the products and tell us the exact type your need according to your requirements,like input speed,output torque,configuration,installation,etc:the installation position of the products in the order should accord with your actual needs,otherwise, it will result in oil leakage, which will impact the serving life of the products negatively.if there is special requirement to the installation position,please stress it and inform us.
2) to attain the excellent state of the variators, the common working speed should be chosen in the middle position,instead,it ismot appropriate to choose in the positions of min,or max.speed
3) if your requirements of worm gearbox or speed variator are different from shte standard products as in the catalogue,like:some portion that should be customized or mounted with special motors,please inform us in advance
| Application: | Industry |
|---|---|
| Layout: | Cycloidal |
| Hardness: | Hardened |
| Installation: | Vertical Type |
| Step: | Double-Step |
| Type: | Worm and Wormwheel |
| Customization: |
Available
| Customized Request |
|---|
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.
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 2023-10-26