19 Mar,2026
What is the difference between a spiral bevel and a hypoid?
The NMRV Series Double RV Configuration Worm Gearbox is a highly versatile and efficient solution designed for various industrial applications requiring reliable power transmission. This gearbox series offers a wide range of gear ratios and configurations, making it ideal for applications where space is limited or where precise speed and torque control are necessary. It is engineered with the highest quality materials to ensure optimal performance, durability, and efficiency.
| Product Type | NMRV | Ratios[i] | 30 |
| Input speed [η1] | 1400 | Efficiency [η] | 60% |
| Machine base specifications | 025-150 Total 10 types | Transfer power | 60W-15kW |
| Speed ratio range | A single frame has 12 reduction ratios from 5:1 to 100:1 |
Product Features:
• Power Range: Available in a power range from 0.06 kW to 15 kW, suitable for a variety of applications.
• Maximum Output Torque: The gearbox is capable of delivering a maximum output torque of 1300 Nm, ensuring the reliability and robustness required for heavy-duty operations.
• Efficiency: The gearbox achieves an efficiency of 60%, making it an effective choice for applications where energy savings are important.
• Speed Ratios: It offers a wide range of reduction ratios from 5:1 to 100:1, with 12 reduction ratios available in a single frame.
• Modular Design: The NMRV gearbox can be configured in a double RV configuration, which provides a wide gear ratio range from 7.5:1 to 5000:1. This flexibility allows for customized solutions based on specific application requirements.
• Construction Material:
○ Housing: Constructed from aluminum alloy (frames 025–105) for lightweight and corrosion resistance, and cast iron (frames 110–150) for durability and reliability.
○ Worm Gear and Worm: The worm is made from high-quality alloy steel, surface-hardened with a tooth surface hardness of 56–62 HRC. The worm gear is made from high-quality tin bronze, ensuring excellent wear resistance and longevity.
Product Advantages:
• Wide Power Range: The NMRV Series offers a power range from 0.06 kW to 15 kW, allowing it to meet the demands of both small-scale and large-scale operations.
• Self-locking Ability: Single-stage worm gear ratios provide good self-locking characteristics, which is ideal for applications where the load needs to remain stationary when the drive is not active. For multi-stage configurations, self-locking characteristics are reduced but transmission efficiency is improved.
• Durability and Longevity: The use of high-quality materials such as alloy steel and tin bronze ensures a long service life and high resistance to wear and tear. The aluminum alloy housing contributes to a lightweight structure, while cast iron provides enhanced durability for larger frame sizes.
• Customizable Gear Ratios: With the flexibility of 12 reduction ratios in a single frame, this gearbox can be adapted to meet diverse operational needs, making it a highly versatile solution.
• Compact Design: The compact and space-saving design makes it an excellent choice for applications where size and weight limitations are critical.
• Ease of Maintenance: The design of the NMRV gearbox allows for straightforward maintenance and servicing, reducing downtime and increasing operational efficiency.
Product Applications:
The NMRV Series Double RV Configuration Worm Gearbox is ideal for use in a variety of industrial and commercial applications, such as:
• Conveyor Systems: The ability to manage different speed and torque requirements makes this gearbox suitable for conveyor applications in manufacturing and logistics industries.
• Material Handling: Used in lifting and moving heavy materials where precise control of speed and torque is crucial.
• Automated Equipment: Perfect for applications in robotics and automated machinery that require reliable and efficient power transmission.
• Pumps and Mixers: With a wide range of speed and torque outputs, it is widely used in pump and mixing systems where performance consistency is key.
| Working Machine Coefficient | ||||||||||
| Working Machine | Daily working hours | Working Machine | Daily working hours | |||||||
| ≤0.5h | 0.5-10h | >10h | ≤0.5h | 0.5-10h | >10h | |||||
| Sewage Treatment | Thickener (Central Drive) | - | - | 1.2 | Metal Processing | Reversing Slab Mill | - | 2.5 | 2.5 | |
| Filter Press | 1 | 1.3 | 1.5 | Reversing Wire Mill | - | 1.8 | 1.8 | |||
| Flocculator | 0.8 | 1 | 1.3 | Reversing Sheet Mill | - | 2 | 2 | |||
| Aerator | - | 1.8 | 2 | Reversing Plate Mill | - | 1.8 | 1.8 | |||
| Collection Equipment | 1 | 1.2 | 1.3 | Roll Gap Adjustment Drive | 0.9 | 1 | - | |||
| Longitudinal/Rotary Combined Collector | 1 | 1.3 | 1.5 | Conveying Machinery | Bucket Elevator | - | 1.2 | 1.5 | ||
| Pre-thickener | - | 1.1 | 1.3 | Winch | 1.4 | 1.6 | 1.6 | |||
| Screw Pump | - | 1.3 | 1.5 | Hoist | - | 1.5 | 1.8 | |||
| Water Turbine | - | - | 2 | Belt Conveyor < 150kw | 1 | 1.2 | 1.3 | |||
| Centrifugal Pump | 1 | 1.2 | 1.3 | Belt Conveyor ≥150kw | 1.1 | 1.3 | 1.5 | |||
| Positive Displacement Pump (1 Cylinder) | 1.3 | 1.4 | 1.8 | Freight Elevator* | - | 1.2 | 1.5 | |||
| Positive Displacement Pump (>1 Cylinder) | 1.2 | 1.4 | 1.5 | Passenger Elevator* | - | 1.5 | 1.8 | |||
| Bucket Conveyor | - | 1.6 | 1.6 | Scraper Conveyor | - | 1.2 | 1.5 | |||
| Tilting Device | - | 1.3 | 1.5 | Escalator | - | 1.2 | 1.4 | |||
| Caterpillar Travel Gear | 1.2 | 1.6 | 1.8 | Rail Traveling Mechanism | - | 1.5 | - | |||
| Bucket Wheel Excavator (for Pickup) | - | 1.7 | 1.7 | Frequency Conversion Device | - | 1.8 | 2 | |||
| Bucket Wheel Excavator (for Bulk Material) | - | 2.2 | 2.2 | Reciprocating Compressor | - | 1.8 | 1.9 | |||
| Shredder / Chopper | - | 2.2 | 2.2 | Hoisting Machinery | Slewing Mechanism | 1 | 1.4 | 1.8 | ||
| Traveling Mechanism* | - | 1.4 | 1.8 | Luffing Mechanism | 1 | 1.25 | 1.5 | |||
| Plate Bending Machine* | - | 1 | 1 | Traveling Mechanism | 1.5 | 1.75 | 2 | |||
| Chemical Industry | Extruder | - | - | 1.6 | Hoisting Mechanism | 1 | 1.25 | 1.5 | ||
| Slurry Mixer | - | 1.8 | 1.8 | Jib Crane | 1 | 1.25 | 1.6 | |||
| Rubber Calender | - | 1.5 | 1.5 | Cooling Towers | Cooling Tower Fan | - | - | 2 | ||
| Cooling Drum | - | 1.3 | 1.4 | Fan (Axial and Centrifugal) | - | 1.4 | 1.5 | |||
| Mixer (Uniform Media) | 1 | 1.3 | 1.4 | Sugar Production | Cane Knife* | - | - | 1.7 | ||
| Mixer (Non-uniform Media) | 1.4 | 1.6 | 1.7 | Cane Mill | - | - | 1.7 | |||
| Agitator (Uniform Density) | 1 | 1.3 | 1.5 | Beet Sugar Production | Beet Slicer | - | - | 1.2 | ||
| Agitator (Non-uniform Density) | 1.2 | 1.4 | 1.6 | Extractor, Mechanical Refrigerator, Cooker | - | - | 1.4 | |||
| Agitator (Uneven Gas Absorption) | 1.4 | 1.6 | 1.8 | Beet Washing Machine | - | - | 1.5 | |||
| Oven / Drying Furnace | 1 | 1.3 | 1.5 | Beet Crusher | - | - | 1.5 | |||
| Centrifuge | 1 | 1.2 | 1.3 | Paper Machinery | Various Types** | - | 1.8 | 2 | ||
| Metal Processing | Tilting Machine | 1 | 1 | 1.2 | Pulper Drive | 2 | 2 | 2 | ||
| Steel Pusher | 1 | 1.2 | 1.2 | Centrifugal Compressor | - | 1.4 | 1.5 | |||
| Winding Machine | - | 1.6 | 1.6 | Cableways | Freight Cableway | - | 1.3 | 1.4 | ||
| Cooling Bed Cross Transfer | - | 1.5 | 1.5 | To-and-fro Aerial Ropeway | - | 1.6 | 1.8 | |||
| Roller Straightener | - | 1.6 | 1.6 | T-bar Lift | - | 1.3 | 1.4 | |||
| Roller Table (Continuous) | - | 1.5 | 1.5 | Continuous Ropeway | - | 1.4 | 1.6 | |||
| Roller Table (Intermittent) | - | 2 | 2 | Cement Industry | Concrete Mixer | - | 1.5 | 1.5 | ||
| Reversing Tube Mill | - | 1.8 | 1.8 | Crusher* | - | 1.2 | 1.4 | |||
| Shearing Machine (Continuous)* | - | 1.5 | 1.5 | Rotary Kiln | - | - | 2 | |||
| Shearing Machine (Crank Type)* | 1 | 1 | 1 | Tube Mill | - | - | 2 | |||
| Continuous Casting Drive | - | 1.4 | 1.4 | Separator | - | 1.6 | 1.6 | |||
| Reversing Roughing Mill | - | 2.5 | 2.5 | Roller Press | - | - | 2 | |||
The NMRV Series Double RV Configuration Worm Gearbox provides a high-performance, cost-effective, and customizable solution for power transmission in a wide variety of industries. Its robust construction, self-locking capabilities, and diverse speed ratio options make it an ideal choice for applications that demand precision, efficiency, and reliability. Whether you need it for material handling, automated machinery, or other industrial applications, the NMRV Series gearbox delivers superior performance and durability.
Years Industry Experience
Factory Area
Skillful Employees
Advanced Production Line
19 Mar,2026
12 Mar,2026
05 Mar,2026
26 Feb,2026
19 Feb,2026
12 Feb,2026