Choose AmpFlow planetary gearmotors when extreme precision and moderate torque are required. Our planetary gearheads have backlash as low as eight arcminutes.


Motor voltages range from 6V to 72V, and reduction ratios range from 1:4 to 1:32. Find the perfect combination below, or we can design a custom gearmotor.


Here are some tips for choosing the best reduction ratio.


Click the tabs to see the different reduction ratios.

1:4
1:8
1:16
1:32
1:60
1:120
Type High-Performance Economy Motors
Voltage Range 6 to 18 Volts 12 to 36 Volts 24 to 72 Volts
Model E30-400-12-PR8 E30-150-12-PR8 E30-400-24-PR8 E30-150-24-PR8 E30-400-48-PR8 E30-150-48-PR8
Nominal Voltage 12V1 12V1 24V1 24V1 48V1 48V1
Peak Horsepower 1.3 0.5 1.8 0.8 2.3 0.9
Reduction Ratio 1:8 1:8 1:8 1:8 1:8 1:8
Backlash (arcmin) 8 8 8 8 8 8
Max Torque (in-lbs) 2802 190 2802 2802 2802 2802
No-Load RPM 750 620 660 650 670 650
Weight (lbs) 8.1 5.9 8.1 5.9 8.1 5.9
Price $229 $199 $229 $199 $229 $199
Pictures
Drawings
Performance Charts
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Click the tabs to see the different reduction ratios.

1:4
1:8
1:16
1:32
1:60
1:120
Type High-Performance Mid-Range
Model A28-400-PR8 A28-150-PR8 F30-400-PR8 F30-150-PR8
Nominal Voltage 24V1 24V1 24V1 24V1
Peak Horsepower 3.7 2.5 2.1 2.0
Reduction Ratio 1:8 1:8 1:8 1:8
Backlash (arcmin) 8 8 8 8
Max Torque (in-lbs) 2802 2802 2802 2802
No-Load RPM 560 700 520 800
Weight (lbs) 9.4 6.2 10.9 7.0
Price $569 $464 $409 $359
Pictures
Drawings
Performance Charts
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Click the tabs to see the different reduction ratios.

1:4
1:8
1:16
1:32
1:60
1:120
Type Fan Cooled 24V Fan Cooled 48V
Model A28-400-F24-PR8 A28-150-F24-PR8 A28-400-F48-PR8 A28-150-F48-PR8
Nominal Voltage 24V1 24V1 48V1 48V1
Peak Horsepower 3.7 2.5 9.83 3.9
Reduction Ratio 1:8 1:8 1:8 1:8
Backlash (arcmin) 8 8 8 8
Max Torque (in-lbs) 2802 2802 2802 2802
No-Load RPM 560 700 740 850
Weight (lbs) 11.1 6.4 11.1 6.4
Price $619 $514 $619 $514
Pictures
Drawings
Performance Charts
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The fan motors have ventilation holes in the front and rear aluminum plates to allow for flow-through cooling. The holes in the front plate are positioned so they are not blocked when mounting the motor to a flat surface. These motors also feature low-profile motor leads for better fit into smaller spaces.


1 The above specifications are for the motor's nominal voltage. The motors can also be used at lower or higher voltages. The RPM is proportional to the voltage, so running at half the nominal voltage will result in half the speed, and twice the voltage will double the speed. The maximum achievable torque is also proportional to the voltage. Shorter duty-cycles are recommended for higher voltages to allow the motors time to cool. Please note that the above torque figures are the theoretical peak torques when stalled. Operating any high-performance motor while stalled will damage it.


2 Maximum torque limited by gearhead.


3 Theoretical peak power is 11.5 HP (before gearhead efficiency loss). Power at the recommended short-term current limit of 200A is 9.1 HP. The current required to reach this figure is far outside the safe operating limits of this motor. This figure is theoretical and should be used for comparative purposes only.




Planetary Reducers Available Separately





Model PR4 PR8 PR16 PR32 PR60 PR120
Reduction Ratio 1:4 1:8 1:16 1:32 1:60 1:120
Backlash (arcmin) 8 8 12 12 15 15
Max Torque (in-lbs) 280 280 780 780 710 710
Weight (lbs) 1.8 1.8 2.4 2.4 2.9 2.9
Price $120 $120 $167 $167 $195 $195
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Drawings
Order



Optical Encoder



Hover to see mounted optical encoder

All our three-inch motors (other than the fan motors) can be supplied with an optical encoder. The encoder mounts on the back of the motor, and it comes with a 20-inch cable. It has 512 PPR and an index. Here is the wiring chart:


Black Ground
Yellow Index
White Channel B
Red +5VDC
Green Channel A

We can mount the encoder, or it can be ordered separately.

Optical Encoder Mounted - $80
Quantity
Optical Encoder Unmounted - $60
Quantity


Warranty



The gearmotors are warranted to be free from manufacturing defects and fully operational when you receive them. AmpFlow gives no other warranty, either expressed or implied. Warranties are not transferable. In no event shall AmpFlow's liability exceed the buyer's purchase price, nor shall AmpFlow be liable for any indirect or consequential damages.


We accept Visa, MasterCard, and PayPal.

Replacement brushes are available here


Contact us for custom motors and volume pricing: