AmpFlow Wheelmotors

The AmpFlow Wheel/Gearmotor combination can be configured with your choice of six different wheel sizes and ten different motors.

The high-traction solid rubber wheels are 1.5 inches wide and they range in diameter from 4 inches to 10 inches. The big pneumatic 12.5-inch wheel pictured on the left is 2.75 inches wide.

The wheels have a custom hub that is keyed to the 3/4-inch shaft of the speed reducer. The wheel is assembled with 1/4-inch keys and held in place by two steel discs and a spacer. The whole assembly is held together by a 5/16-18 screw that threads directly into the shaft.

This combination of high power, high traction, and light weight make these wheels ideal for robots and other mobile applications.

We stock 14 different gearmotors or we can design custom gearmotors:

Type

High-Performance Economy Motors

Voltage Range

6 to 18 Volts

12 to 36 Volts

24 to 72 Volts

Model

E30-400-12-G

E30-150-12-G

E30-400-24-G

E30-150-24-G

E30-400-48-G

E30-150-48-G

Peak Horsepower

1.6

0.7

2.1

1.0

2.7

1.1

Motor Diameter (inches)

3.1

Reduction Ratio

8.3:1

Stall Torque (in-lbs)

500

230

770

360

960

390

Nominal Voltage

12*

24*

48*

No-Load RPM

780

700

680

670

690

670

Pounds

9.4

7.1

9.4

7.1

9.4

7.1

Price

$299

$269

$299

$269

$299

$269

Pictures

Drawings

Performance Charts

Order

Type

High-Performance

Mid-Range

Model

A28-400-G

A28-150-G

F30-400-G

F30-150-G

Peak Horsepower

4.3

3.0

2.5

2.3

Motor Diameter (inches)

3.0

3.1

Reduction Ratio

8.3:1

Stall Torque (in-lbs)

1930

1020

1160

710

Nominal Voltage

24*

No-Load RPM

580

720

540

830

Pounds

10.4

7.3

11.8

8.2

Price

$639

$534

$479

$429

Pictures

Drawings

Performance Charts

Order

* 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.

On Sale! Fan Cooled Motors

Type

Fan Cooled 24V

Fan Cooled 48V

Model

A28-400-F24-G

A28-150-F24-G

A28-400-F48-G

A28-150-F48-G

Peak Horsepower

4.3

3.0

11.5*

4.6

Motor Diameter (inches)

3.0

Reduction Ratio

8.3:1

Stall Torque (in-lbs)

1930

1020

3740**

1290

Nominal Voltage

24V

48V

No-Load RPM

580

720

750

880

Pounds

10.6

7.5

10.6

7.5

Price

$689

$584

$~~689~~ $609

$~~584~~ $524

Pictures

Drawings

Performance Charts

Order

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.

* Theoretical peak power is 11.5 HP. Power at the recommended short-term current limit of 200A is 9.1 HP.
** The current required to reach 3740 in-lbs is far outside the safe operating limits of this motor. This figure is theoretical and should be used for comparative purposes only.

VEX High-Voltage Motor Controller

We recommend using the IFI VEX 48V motor speed controller with our 48-volt motors. Visit this page for more details.

Here are charts showing the no-load speed (in MPH) for each Wheel / Motor combination:

Wheel	E30-400-12-G	E30-150-12-G	E30-400-24-G	E30-150-24-G	E30-400-48-G	E30-150-48-G
4-inch	9.3	8.3	8.1	8.0	8.2	8.0
5-inch	11.6	10.4	10.1	10.0	10.3	10.0
6-inch	13.9	12.5	12.1	12.0	12.3	12.0
8-inch	18.6	16.7	16.2	15.9	16.4	15.9
10-inch	23.2	20.8	20.2	19.9	20.5	19.9
12.5-inch	29.0	26.0	25.3	24.9	25.7	24.9

Wheel	A28-400-G	A28-150-G	F30-400-G	F30-150-G	A28-400-F48	A28-150-F48
4-inch	6.9	8.6	6.4	9.9	8.9	10.5
5-inch	8.6	10.7	8.0	12.3	11.1	13.1
6-inch	10.4	12.9	9.6	14.8	13.4	15.7
8-inch	13.8	17.1	12.9	19.8	17.8	20.9
10-inch	17.3	21.4	16.0	24.7	22.3	26.2
12.5-inch	21.6	26.8	20.1	30.9	27.9	32.7

The speeds shown above are for the motor's nominal voltage. If a lower or higher speed is required, the motors can 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. Ideally, the top speed of the WheelMotor would match the top speed required in an application when any electronic speed controls are set to full throttle.

Here are our recommendations regarding the selection of a proper reduction ratio.

WheelMotors with the E30-150 motors. (Click for larger images)

4-inch WheelMotor 5-inch WheelMotor 6-inch WheelMotor

8-inch WheelMotor 10-inch WheelMotor 12.5-inch WheelMotor

The price of the speed reducer is $190. To that you can add any available combination of motors and wheels to get the best balance of power, speed, and price. Please see our Motors page for more information on our motors and visit the Speed Reducer page for more details of our custom gearhead.

Wheel/Motor Combination - Base Price: $190

Warranty
The wheelmotors 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.

Ordering
Shipments must be to a street address; we can not ship to a PO Box. Please allow 7-10 days for orders shipped by UPS ground, 3-4 days for orders shipped by 2nd day air, and up to 14 days for international orders.