Industrial Gearmotors

A gear motor is a combined unit consisting of an electric motor integrated with a gearbox or gear reducer. The motor provides the input power, while the gearbox transfers that power to the output shaft at reduced speed but increased torque.

 Inside the gear unit, a series of gears transfer the rotational force from the motor's input shaft to the output shaft. This gear train slows down the speed of the motor while multiplying the torque output in accordance with the selected gear ratio.

Common gear motor types include helical, planetary, worm, bevel, hypoid, cycloidal, and more. Each uses a different gear arrangement optimized for different output speeds, torques, sizes, and efficiency levels.

Combine our helical gears for high-efficiency power transmission with bevel gears, enabling versatile shaft angles from 90° to other orientations. This combination provides high load capacity and quiet operation, meaning it is well-suited for noise-sensitive plants.

Utilize our range of spiral bevel gearing for robust 90° power transmission between intersecting shafts. These gears offer high precision and rotational accuracy, along with exceptional shock load capacity, making them ideal for harsh duties like steel mills and mines.

We offer hypoid gears, which form an extremely compact right-angle package with a hollow output shaft bore. The space-saving design allows simpler integration by passing components/services through the center shaft. However, higher complexity increases costs and friction levels.

Sumitomo angled helical gears reduce noise/vibration while improving efficiency over spur gears. Our helical gearmotors provide high load capacities in a compact footprint, making them ideal for heavy-duty yet quiet applications like conveyors and cranes.

These gearmotors use bevel gears to transfer power between non-parallel shafts. This offers versatility in equipment layout, high mechanical efficiency, and reduced maintenance requirements. They provide great flexibility for mill and mining equipment.

Our worm gearing helps you attain very high reduction ratios and output torque multiplication. It provides high torque at low speeds, making it well-suited for bulk handling applications like mixers and conveyors. Our worm gear motors offer compact designs and typically quiet operation.

Key factors in selecting a gear motor are the required output torque and speed, along with considerations like envelope size, efficiency, environmental conditions, and the optimal gear geometry for the application. We also have expert engineers on staff to assist you and an intuitive online Product Configurator

With proper sizing, quality components, and maintenance, most gear motors can deliver reliable service for 10 - 20 years or longer before requiring overhaul or replacement.

Yes, gear motor repairs are possible by replacing worn gears, bearings, seals, or other components. Remanufacturing services can overhaul and refurbish older units. Contact us for our Aftermarket solutions.

Based on the manufacturer's recommendations, regular inspection, lubrication, and cleaning are recommended. Vibration analysis, oil sampling, and other condition monitoring are also advised. You can find Operation & Maintenance manuals for all Sumitomo products in our Literature Library