Small AC Gear Reducer Motor 25W

List of motor characteristics

4RK AC reduction motor (25~30W) (80mm)

• Parameters in above table refer to motor alone,without any load device.
• Permissible change in rated speed and rated current of the motor is within the range of±5%.

Outline dimension drawing

Allowable load for the gear motor

• The speed is based on the synchronous motor speed reduction ratio as a benchmark calculated by dividing the value of.Actual speed will vary the size of the load changes in less than the values shown in2~15%.
• Hope to the table of the reduction ratio is greater than the further reduction,it would be installed between the motor and the reducer reduction ratiio of 10 the middle of the reducer.
• When the load torque exceeds the maximum allowable load torque gear motor,and a locked rotor situation exists,please slow down box at the junction of the output shaft and load torque limit device installed to ensure the normal operation gearbox.

Product Overview

The Small AC Gear Reducer Motor 25W is a 4RK series geared motor on a compact 80 mm frame, combining a reversible AC motor with a matched reduction gearbox. It provides rated torque from 154 to 220 mN·m at output speeds of 1250–1550 r/min, covering the 25–30W power range. This 4RK gear motor is the dependable middle step between tiny micro-motors and heavier 90 mm drives, offering noticeably more torque than the 70 mm 15W unit while staying small enough for tight machine layouts.

Key Features

• Compact 80 mm frame with a robust die-cast gearbox
• Reversible 30-minute rated duty for forward and reverse running
• Single-phase 110V/220V and three-phase 220V options at 50/60Hz
• Rated torque 154–220 mN·m at 1250–1550 r/min
• Gear ratios from 3:1 up to 300:1, with maximum allowable load up to 7.84 N·m (80 kg·cm)
• Quiet, stable output ideal for continuous light industrial duty

Applications

The 25W gear reducer motor is a common choice for small conveyor drives, vending and dispensing equipment, valve and damper actuators, laboratory instruments, and packaging line feeders. It is also frequently specified as a compact OEM drive where a larger frame will not fit. When your load grows beyond this range, review the full small AC gear reducer motor range for higher-power options.

How to Choose the Right Gear Motor

Verify the required output speed against the allowable load table, and confirm voltage, frequency, and duty cycle before ordering. For a structured sizing method, see our gear motor selection guide, or contact Tenchuan with your load data for a recommendation.

FAQ

What voltages are available for the 25W gear motor?

Single-phase 110V and 220V, plus a three-phase 220V version, in 50Hz and 60Hz ratings.

What is the rated torque and speed?

Rated torque is 154–220 mN·m and rated speed is 1250–1550 r/min depending on the model and frequency.

Can this gear motor run in reverse?

Yes. The reversible 30-minute rated models support forward and reverse operation for reciprocating and positioning drives.

What is the maximum load it can handle?

The maximum allowable load is 7.84 N·m (80 kg·cm) at the highest reduction ratios.

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