Produktbeskrivelse
RV Series 90 Degree NMRV Small Worm Gearboxes for Screw Conveyor
NMRV 571-150 worm gear box with flange and electric motor
NMRV+NMRV Double Stage Arrangement Reduction Gear Box
RV Series Worm Gearbox
worm speed reducer
nmrv worm gear motor
RV Series
Including RV / NMRV / NRV.
Main Characteristic of RV Series Worm Gearbox
RV series worm gear reducer is a new-generation product developed by CHINAMFG on the basis of perfecting WJ series products with a compromise of advanced technology both at home and abroad.
1. High-quality aluminum alloy, light in weight and non-rusting.
2. Large in output torque.
3. Smooth running and low noise,durable in dreadful conditions.
4. High radiation efficiency.
5. Good-looking appearance, durable in service life and small volume.
6. Suitable for omnibearing installation.
Main Materials of RV Series Worm Gearbox
1. Housing: die-cast aluminum alloy(frame size: 571 to 090), cast iron(frame size: 110 to 150).
2. Worm: 20Crm, carbonization quencher heat treatment makes the surface hardness of worm gears up to 56-62 HRX, retain carbonization layer’s thickness between 0.3 and 0.5mm after precise grinding.
3. Worm Wheel: wearable stannum bronze alloy.
| SPEED RATIO | 7.5~100 |
| OUTPUT TORQUE | <1050NM |
| IN POWER | 0.09-11KW |
| MOUNTING TYPE | FOOT-MOUNTED FLANGE-MOUNTED |
| When working, great load capacity, stable running, low noise with high efficiency. | |||||||
| Gear Box’s Usage Field | |||||||
| 1 | Metallurgy | 11 | Agitator | ||||
| 2 | Mine | 12 | Rotary weeder | ||||
| 3 | Machine | 13 | Metallurgy | ||||
| 4 | Energy | 14 | Compressor | ||||
| 5 | Transmission | 15 | Petroleum industry | ||||
| 6 | Water Conserbancy | 16 | Air Compressor | ||||
| 7 | Tomacco | 17 | Crusher | ||||
| 8 | Medical | 18 | Materials | ||||
| 9 | Pakning | 19 | Electronics | ||||
| 10 | Kemisk industri | 20 | Textile indutry | ||||
| … | … | ||||||
| Magt | 0.06kw | 0.09kw | 0.12kw | 0,18 kW | 0.25kw | 0,37 kW | 0,55 kW |
| 0,75 kW | 1,1 kW | 1,5 kW | 2,2 kW | 3 kW | 4 kW | 5.5kw | |
| 7.5kw | 11kw | 15kw | |||||
| Drejningsmoment | 2.6N.m-3000N.m | ||||||
| Forhold | 7.5-100, the double gearbox is more | ||||||
| Color | Blue, Silver or as customers’ need | ||||||
| Materiale | Iron or Aluminium | ||||||
| Pakning | Carton with Plywood Case or as clients’ requirement | ||||||
| Type | RV571 | RV030 | RV040 | RV050 | RV063 | RV075 | RV090 |
| Weight | 0.7kg | 1.3kg | 2.3kg | 3.5kg | 6.2kg | 9kg | 13kg |
| Type | RV110 | RV130 | RV150 | ||||
| Weight | 35kg | 60kg | 84kg | ||||
| Mounting Methods | Foot Installation | Flange Installation | |||||
| For various mortor or double input/output shafts can be equipped | |||||||
Product picture:
Structure:
Certificate:
Packing & Delivery:
Our company:
AOKMAN was founded in 1982, which has more than 36 years in R & D and manufacturing of gearboxes, gears, shaft, motor and spare parts.
We can offer the proper solution for uncountable applications. Our products are widely used in the ranges of metallurgical, steel, mining, pulp and paper, sugar and alcohol market and various other types of machines with a strong presence in the international market.
AOKMAN has become a reliable supplier, able to supply high quality gearboxes.With 36 years experience, we assure you the utmost reliability and security for both product and services.
Customer visiting:
FAQ:
1.Q: Hvilke typer gearkasser kan du producere for os?
A:Main products of our company: UDL series speed variator,RV series worm gear reducer, ATA series shaft mounted gearbox, X,B series gear reducer,
P series planetary gearbox and R, S, K, and F series helical-tooth reducer, more
than 1 hundred models and thousands of specifications
2.Q:Can you make as per custom drawing?
A: Yes, we offer customized service for customers.
3.Q:What is your terms of payment ?
A: 30% Advance payment by T/T after signing the contract.70% before delivery
4.Q:What is your MOQ?
A: 1 Set
Welcome you contace me if you are interested in our product.
Our team will support any need you might have.
| Anvendelse: | Machinery, Industry |
|---|---|
| Fungere: | Speed Changing, Speed Reduction |
| Layout: | Orthogonal |
| Hårdhed: | Hærdet tandoverflade |
| Installation: | Vandret type |
| Trin: | Enkelttrin |
| Tilpasning: | Tilgængelig | Tilpasset anmodning |
|---|

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.
- Smøring: 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.
- Modreaktion: 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.
- Opretholdelse: 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.

Snekkegear vs. spiralgear: En sammenligning
Snekkegear og spiralgear er to populære typer gearsystemer, der hver især har deres egne fordele og ulemper. Lad os sammenligne dem:
| Aspekt | Snekkegearkasse | Spiralgearkasse |
| Effektivitet | Lavere effektivitet på grund af glidende friktion mellem snekken og snekkehjulet. | Højere effektivitet på grund af rullende kontakt mellem tænderne på det spiralformede tandhjul. |
| Momenttransmission | Fremragende momentoverførsel og høje reduktionsforhold opnåelige i et enkelt trin. | God momentoverførsel, men kan kræve flere trin for høje reduktionsforhold. |
| Støj og vibrationer | Generelt højere støj- og vibrationsniveauer på grund af glidende bevægelse. | Lavere støj- og vibrationsniveauer på grund af jævnere rullekontakt. |
| Modreaktion | Højere iboende tilbageslag på grund af designet. | Lavere slør på grund af indgreb af spiralformede tænder. |
| Effektivitet ved højere hastigheder | Mindre egnet til højhastighedsapplikationer på grund af effektivitetstab. | Mere egnet til højhastighedsapplikationer på grund af højere effektivitet. |
| Overbelastningsbeskyttelse | Naturlig selvlåsende funktion giver en vis overbelastningsbeskyttelse. | Har muligvis ikke samme niveau af iboende overbelastningsbeskyttelse. |
| Applikationer | Almindeligt anvendt til applikationer, der kræver høje reduktionsforhold, såsom transportbåndssystemer og tunge maskiner. | Udbredt anvendt i forskellige applikationer, herunder biltransmissioner, industrimaskiner og mere. |
Både snekke- og spiralgear har deres plads inden for ingeniørkunst, og valget mellem dem afhænger af de specifikke krav til applikationen. Snekkegear foretrækkes til applikationer med høje reduktionsforhold, mens spiralgear vælges for deres højere effektivitet og jævnere drift.

What is a Worm Gearbox and How Does It Work?
A worm gearbox, also known as a worm gear reducer, is a mechanical device used to transmit rotational motion and torque between non-parallel shafts. It consists of a worm screw and a worm wheel, both of which have helical teeth. The worm screw resembles a threaded cylinder, while the worm wheel is a gear with teeth that mesh with the worm screw.
The working principle of a worm gearbox involves the interaction between the worm screw and the worm wheel. When the worm screw is rotated, its helical teeth engage with the teeth of the worm wheel. As the worm screw rotates, it translates the rotational motion into a perpendicular motion, causing the worm wheel to rotate. This perpendicular motion allows the worm gearbox to achieve a high gear reduction ratio, making it suitable for applications that require significant speed reduction.
One of the key features of a worm gearbox is its ability to provide a high gear reduction ratio in a compact design. However, due to the sliding nature of the meshing teeth, worm gearboxes may exhibit higher friction and lower efficiency compared to other types of gearboxes. Therefore, they are often used in applications where efficiency is not the primary concern but where high torque and speed reduction are essential, such as conveyor systems, elevators, automotive steering systems, and certain industrial machinery.


editor by CX 2023-09-28