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.

Shaft Diameter	19.05mm
No Load Current	4.4A
Peak power	9.1hp
RPM	750rpm
Stall Torque	422Nm
Type	Motor + gearbox
Voltage Rating	48V