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GB4 12.5:1 Composite


Worm Wheel

Gear Ratio


Nm (Cont)


Nm (Int)


Part No:GB4-12.5C

L: 112 × W: 73 × H: 140mm

GB4 12.5:1 Standard, composite gears

This product comes in multiple variations. Get in touch to discuss your exact requirements.

Gearbox OrientationRight Angle
Gearbox TypeWorm Wheel
Gearbox Ratio12.5:1 ratio
Gear MaterialComposite
Gearbox Stages1
Gearbox Efficiency85%
Gearbox Axial Load300 N
Gearbox Radial Load500 N
Gearbox Continuous Torque17.0 Nm
Gearbox Intermittent Torque27.0 Nm
Backlash10-25 arc.min
Weight (kg)1

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