Ampflow A28-400-F48 3" 48V Motor and Gearbox

The A28-400-F48-G uses the high performance 9.1hp A28-400-F48 motor and is also fitted with a 8.3:1 reduction chain drive gearbox. These strong gearboxes give a huge amount of torque which is ideal for heavy duty robotics, motorised vehicles and automation applications.

The motor itself uses rare-earth neodymium magnets and with a nominal voltage of 48V produces a peak power of 9.1hp. They are fitted with a fan and are drilled with vent holes to allow flow-through cooling which allows longer duty cycles and even higher power outputs.

The motor and gearbox assembly can be mounted on a plate up to 10mm thick using the four 1/4-20 thread screws supplied.

Replacement brushes are available separately.

• Motor diameter: 77mm (3in.)
• Peak power: 9.1hp
• Stall torque: 422Nm (59,840oz.-in.)*
• Nominal voltage: 48V
• No-load RPM @ 48V: 750
• Shaft diameter: 19.05mm (3/4in.)
• Shaft length: 50.8mm (2in.)
• Key-way: 6.35mm (1/4in.)
• Magnet type: neodymium
• No-load current: 4.4A
• Resistance: 0.066Ω
• Weight: 4.8kg (10.6lb)
• Ampflow type A28-400-F48-G

* The current required to reach 422Nm is far outside the safe operating limits of this motor. This figure is theoretical and should be used for comparative purposes only.

Type	Motor + gearbox
Shaft Diameter	19.05mm
RPM	750rpm
No Load Current	4.4A
Stall Torque	422Nm
Voltage Rating	48V