Gear Reducer

A gear reducer is a mechanical power transmission device that reduces rotational speed from a motor while proportionally increasing output torque. Also referred to as a speed reducer or gearbox reducer, it serves as the critical link between a motor and a driven load - enabling controlled, efficient motion across virtually every sector of industrial automation, manufacturing, and material handling.

Here In this page, we introduce our PGCR serial Gear Reducer, you will see technical parameter,finished gearboxes,videos of test as follows:

Industrial automation use cases

CASE 01 · AGV SYSTEMS ： Automated guided vehicle drive axle

Warehouse AGVs pair brushless DC motors with compact inline gear reducers (ratio 20:1–40:1) to achieve precise, torque-rich wheel drive at low speed. The reducer absorbs shock loads during acceleration and stop cycles, extending motor life while maintaining positioning accuracy of ±5 mm along programmed routes - critical for pallet-handling reliability in 24/7 logistics facilities.

CASE 02 · CONVEYOR LINE ： Heavy-duty belt conveyor drive

Automotive stamping lines use helical shaft-mounted gear reducers on main conveyor drives to step down 1,450 RPM motor output to 35–50 RPM belt speed, generating several thousand Nm of output torque. The reducer's high service factor (SF 2.0+) handles start-stop cycling and occasional jam loads, ensuring consistent throughput without unplanned downtime on the production floor.

FAQs about Gear reducer

What is the difference between a gear reducer and a gearbox?

The terms are largely interchangeable. "Gear reducer" emphasizes the speed-reduction function, while "gearbox" describes the housing assembly. In practice, both refer to the same enclosed gear transmission unit mounted between a motor and a driven machine.

How do I calculate the output torque of a gear reducer?

Output torque = Input torque × Gear ratio × Efficiency. For example, a motor delivering 10 Nm into a 50:1 reducer at 97% efficiency produces 485 Nm at the output shaft. Always apply a service factor of 1.5–2× to account for peak and shock loads in your application.

Which gear reducer type offers the highest efficiency?

Helical and planetary gear reducers typically achieve 96–98% efficiency per stage. Worm gear reducers are less efficient (50–90%), especially at high reduction ratios, but their self-locking property and compact form make them preferred for specific vertical-load applications.

What causes backlash in a gear reducer, and why does it matter?

Backlash is the angular play between mating gear teeth when the drive direction reverses. In standard reducers it can reach 15–30 arcmin; precision-ground units achieve <3 arcmin. For positioning systems - robots, CNC axes, inspection equipment - minimizing backlash is essential to hit dimensional accuracy targets consistently.

How often should a gear reducer be serviced or lubricated?

Most manufacturers recommend an initial oil change after 300–500 operating hours, then every 3,000–5,000 hours or annually - whichever comes first. Grease-packed sealed units are maintenance-free for their rated service life. Always consult the OEM manual and factor in ambient temperature and load duty cycle.

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