Sumitomo 3-Phase Motor Gearbox 4kW 241RPM
The Sumitomo 3-Phase Electric Motor Gearbox 4kW Gear Reducer Straight Drive 241RPM is an integrated power transmission unit. It combines a three phase electric motor with a gear reducer to deliver controlled speed and increased torque. The output speed is approximately 241 revolutions per minute. This type of gearmotor is used in industrial machinery where a compact and reliable drive solution is required.
Motor and Gearbox Design
The three phase motor converts electrical energy into mechanical rotation. The gear reducer then lowers the motor speed and increases torque through a set of gears. A straight drive arrangement means the input and output are aligned in a direct configuration. This design can simplify mounting and power transmission. The 4kW rating indicates the motor power class, while the 241RPM output describes the final shaft speed.
Torque and Speed
Speed reduction increases output torque. A gearbox allows a standard motor to drive loads that require lower speed and higher force. The exact output torque depends on the gear ratio, service factor and efficiency. Users should compare the required torque with the gearbox rating. Overloading can cause gear wear, overheating or premature failure.
Applications
Typical applications include conveyors, mixers, agitators, pumps, feeders, packaging machinery, material handling and production lines. The 4kW and 241RPM combination is suitable for medium duty industrial tasks that need steady rotation and reliable torque. It can be used in food processing, water treatment, mining, chemical and manufacturing environments when the enclosure and materials are suitable.
Installation Notes
Installation should follow the equipment manual and local electrical rules. The gearmotor should be mounted on a stable base with correct alignment. Couplings, belts, chains or shafts must be aligned to avoid extra load. Electrical connections should match the motor voltage, frequency and phase. Grounding is required for safety. After installation, check rotation direction before connecting the load.
Lubrication and Cooling
Gear reducers require correct lubrication. Oil type and level depend on the gearbox design, mounting position and operating conditions. Some units use grease or sealed lubrication. The motor should have sufficient airflow for cooling. Dust, heat and moisture can reduce service life. In harsh environments, guards or enclosures may be needed.
Maintenance
Regular maintenance includes checking oil level, leaks, noise, vibration and temperature. Worn seals should be replaced to prevent lubricant loss and contamination. Bearings and gears should be inspected during major service. Electrical terminals should be checked for tightness and signs of overheating. Following the service schedule helps maintain reliable operation.
Conclusion
The Sumitomo 3-Phase Electric Motor Gearbox 4kW Gear Reducer Straight Drive 241RPM is a robust drive unit for industrial machinery. It provides controlled speed, increased torque and dependable power transmission. Correct selection, installation and maintenance help ensure long service life and efficient operation.




