from USA
to Japan
in 5-8 days
At your doorstep by Jun 26  to Jun 29 with standard delivery


  • Measures 3.0 inches diameter (77 mm) by 6.7 inches long (170 mm).
  • No-load rpm: 4900 at 24 volts; Can be used with voltages ranging from 12V to 36VDC.
  • Maximum power: 3200 watts (4.3 horsepower); Maximum stall torque: 25 Nm (3560 oz-in).
  • Peak efficiency at 24V: 83% at 50 amps and 4500 RPM.
  • Power and torque at peak efficiency: 1000 watts (1.3 horsepower) and 1350 mNm (300 oz-in).
  • Imported from USA.
The AmpFlow A28-400 motor is designed to deliver the highest performance and efficiency possible from a brushed DC motor of this size. This is achieved by the use of rare-earth neodymium magnets, along with four brushes, and advanced electromagnetic computer modeling and design. This reversible motor can be used at voltages ranging from 12V to 36V (the RPM is proportional to the voltage.) At 24 Volts, it has a no-load speed of 4900 RPM. Peak short-term power output is 3200 Watts (4.3 horsepower). Peak efficiency of 83% is reached while drawing 50 Amps at 4500 RPM. The power output at 50 Amps is 1000 Watts (1.3 horsepower). These motors are made from two sturdy aluminum castings and a seamless body. The A28-400 motor is 3.0 inches in diameter and 6.7 inches long. The 1/2-inch diameter shaft is two inches long, and it rides in two high-quality ball bearings. There is a short 3/8-inch diameter shaft on the rear of the motor for mounting an optical encoder. The heavy-gauge 12 AWG motor leads are 17 inches long. The motor weighs 6.9 pounds, and it is finished in a high-quality black powder-coat paint. This motor is also available with an optional gearhead. Search for "AmpFlow Gearmotors". AmpFlow® motors are used in diverse applications, including robots, industrial motion control, factory automation, semiconductor manufacturing, power tools, pumps, and personal transport systems. Search for "AmpFlow motors" for more choices.

AmpFlow A28-400 Brushed Electric Motor, 12V, 24V or 36 VDC, 4900 RPM


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