NMRV/NRV Worm Gearbox

Worm Gearbox

Housing

Die-cast Aluminum Alloy Gearbox:  NMRV025~NMRV090

Cast Iron Gearbox: NMRV110~NMRV150

Worm Wheel

Wearable Tin Bronze Alloy, Aluminum Bronze Alloy

Worm Shaft

20Cr Steel, carburizing, quenching, grinding, surface hardness 56-62HRC, 0.3-0.5mm remaining carburized layer after precise grinding

Spare Parts

Worm Shaft Tail Extension, Single Output Shaft, Double Output Shaft, Output Flange, Torque Arm, Dust Cover

Models

NMRV – Hollow Shaft Input with IEC-normalized Motor Flange

NMRV025~NMRV150

NRV – Solid Shaft Input

NRV025~NRV150

NMRV+NMRV

NMRV+NRV

Input Design

Equipped with Electric Motors

Worm Shaft Tail Extension Input

IEC, GOST, NEMA Motor Flange

Output Design

Keyway Hollow Shaft Output

Hollow Shaft with Output Flange

Plug-in Solid Shaft Output

Available Drive Motors

General Motors of 1 Phase or 3 Phase AC

Brake Motors

Variable Frequency Variable Speed Motors

Variable-pole Multi-speed Motors

Explosion-proof Motors

Permanent Magnet Motors

DC Motors

Servo Motors

Brushless Motors

Other Motors

Available Mounting Methods

Flange Mounted

Foot Mounted

Torque Arm Mounted

Painting

Aluminum Alloy Gearbox
After Shot Blasting, Anticorrosion Treatment and Phosphating, Paint with the Color of RAL 5010 Gentian Blue or RAL 7035 Light Grey

Cast Iron Gearbox:
After Painting with Red Antirust Paint, Paint with the Color of RAL 5010 Gentian Blue

Customized painting colors allowed

Features

Compact structure, modular design

High transmission efficiency up to 95%

Light weight, rustproof, low noise, high precision

Standard parts and very flexible for shaft configurations and motor flange interface

Variable reduction ratio allowed

Variable driving power allowed

Variable mounting method allowed

High performance, high safety factor, energy-saving, small vibration, big torque and long working life

Service Conditions

Ambient Temperature: -25~40°C

Altitude: 1000 m.a.s.l

Working Duty: S1(Continuous)

Humidity: ≦90%

Cooling Method: Natural Cooling

Lubrication:

Grease Lubrication

Oil-bath and Splash Lubrication

(The lubrication should be heated above 0°C, if temperature of machine is below 0°C when it start working)

Application

Waste water treatment

Dredgers

Metal working mills

Conveyors

Cranes

Mixer

Crusher

Cooling towers

Paper machine

Cableways

Cement industry

Petroleum industry

Textile machinery

Food machine

Power machine

Construction machine

Metallurgy machine

Cement machine

Water conservancy industry

Chemical machine

Mining machine

Transportation machine

Rubber machine

Other machines and industries