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GB4 75:1 Bronze


Worm Wheel

Gear Ratio


Nm (Cont)


Nm (Int)


Part No:GB4-75B

L: 112 × W: 73 × H: 140mm

GB4 75:1 Standard, bronze gears

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Gearbox Orientation Right Angle
Gearbox Type Worm Wheel
Gearbox Ratio 75:1 ratio
Gear Material Bronze
Gearbox Stages 1
Gearbox Efficiency 45%
Gearbox Axial Load 300 N
Gearbox Radial Load 500 N
Gearbox Continuous Torque 23.0 Nm
Gearbox Intermittent Torque 36.0 Nm
Backlash 10-25 arc.min
Weight (kg) 1.4

The Parvalux GB4 is a right-angle, worm wheel gearbox. With available ratios ranging from 12.5 – 75:1, it offers a wide range of output speeds and a capability of up to 26 Nm torque in continuous operation and 41 Nm in intermittent operation. The GB4 gearbox is available with both composite and bronze gears, offering efficiencies of up to 85%. It is also perfectly suited for use with a range of Parvalux PMDC and BLDC motors, enabling you to assemble the perfect combination of motor and gearbox for your application