19 Mar,2026
What is the difference between a spiral bevel and a hypoid?
The NMRV Series Aluminum Round Output Flange Speed Reducer is a high-performance gearbox designed to provide reliable and efficient reduction in speed and torque. This reducer is widely used across various industries, providing an efficient solution for reducing speed while maintaining robust performance. The product is available in multiple configurations to meet diverse application requirements. It boasts a comprehensive range of specifications, including a wide range of speed ratios, power ratings, and torque capabilities.
| 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:
• Housing Material: The NMRV series features two types of housing materials:
○ Aluminum Alloy: For frames 025–105, the lightweight, rust-resistant aluminum alloy ensures high durability and corrosion resistance.
○ Cast Iron: For frames 110–150, the durable cast iron construction provides exceptional strength and reliability.
• Worm and Worm Gear:
○ Worm Gear: Manufactured using high-quality, wear-resistant tin bronze, providing superior wear characteristics and increased service life.
○ Worm: Made of high-quality alloy steel and surface-hardened with a tooth surface hardness of 56–62 HRC, ensuring efficient transmission and high load-bearing capacity.
• Self-locking Feature:
○ Single-stage worm gears offer excellent self-locking characteristics, ensuring safety and prevention of backdriving under certain conditions.
○ Multi-stage gear ratios improve transmission efficiency while reducing self-locking, offering a better balance between performance and self-locking characteristics.
• Power Range: The NMRV Series covers a wide power range from 0.06 kW to 15 kW, offering versatile solutions for a variety of applications.
• Torque Capability: The maximum output torque of 1300 Nm ensures high-performance and reliability in demanding applications.
• Versatility in Configuration: The NMRV reducers can be used in both single-stage and double-stage RV configurations, with a vast range of gear ratios from 5:1 to 100:1 for single-stage and 7.5:1 to 5000:1 for double-stage.
Product Advantages:
• Wide Power and Torque Range: The NMRV Series offers a wide range of power and torque options, making it adaptable to various applications.
• Durable Construction: With its aluminum alloy and cast iron housing, the NMRV series provides excellent durability and resistance to wear and corrosion, ensuring a longer operational life.
• Efficient Performance: The efficient worm gear design, coupled with high-quality materials, ensures optimal performance, even under heavy loads, reducing energy consumption and improving operational efficiency.
• Self-locking Design: The self-locking feature of single-stage worm gears is ideal for applications where backdriving prevention is crucial.
• Compact and Space-Saving: The compact design of the NMRV series is ideal for space-constrained installations while still providing high power output.
• Flexible Configuration Options: The NMRV series can be combined in a double RV configuration for higher reduction ratios, offering flexibility for varying load and speed requirements.
• Ease of Installation: Designed with ease of integration in mind, the NMRV Series reducers can be quickly and easily mounted in a variety of industrial machines, reducing downtime and improving overall productivity.
Product Applications:
The NMRV Series Aluminum Round Output Flange Speed Reducer is suitable for a wide range of industrial applications, including but not limited to:
• Conveyor systems: Reducing speed for moving heavy loads.
• Textile industry: For precise control of machinery.
• Food processing: Ensuring safe and efficient transport of materials.
• Pumping systems: Ideal for driving pumps where speed reduction and torque increase are essential.
• Agricultural equipment: Used in various machinery for speed and power control.
• Material handling systems: For smooth, controlled movements in automated systems.
The versatility of this speed reducer makes it suitable for many other industries such as packaging, chemical processing, and machine tool manufacturing.
| 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 Aluminum Round Output Flange Speed Reducer is a versatile, reliable, and highly efficient solution for various industrial applications requiring speed reduction and torque increase. Its durable construction, efficient performance, and flexibility in configurations make it a top choice for industries such as material handling, food processing, and machinery. With a wide range of power options, self-locking capabilities, and efficient worm gear design, the NMRV Series guarantees long-lasting performance in the most demanding environments.
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