The AmpFlow speed reducer is a heavy-duty, low-cost, gearhead that works with any of the three-inch diameter AmpFlow motors.
This speed reducer uses a unique three-stage chain-and-sprocket mechanism that reduces cost while still maintaining high torque capacity.
This unit provides speed reduction and torque multiplication, and it's an easy way to "bolt-in" the AmpFlow motors.
We stock 14 different gearmotors or we can design custom gearmotors:
* 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
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.
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.
These speed reducers are made with a three-piece aluminum case that has been precision CNC machined. A total of six sprockets, three roller chains, and five bearings comprise the mechanism. The long output shaft makes it easy to mount pulleys, sprockets, gears, or wheels in the required position. Care was taken to make this unit as compact as possible. The overall dimensions are 6 inches x 3 inches x 2 inches. But the motor is recessed slightly into the reducer, so the net length added to the motor is only 1.8 inches.
The speed reducer uses a unique arrangement of roller chains. This results in torque and efficiency comparable to gear-type reducers at just 1/2 or even 1/3 of the cost of high-torque, geared speed reducers. There is slightly more noise, but these units are ideal when silent operation is not required.
This picture shows the speed reducer undergoing a torque capacity test. The motor is locked and unable to turn. Weight is loaded onto the end of the 40-inch bar until the speed reducer fails. The failure point is 3500 inch-pounds. This gives an almost 2-to-1 margin of safety when used with the A28-400.
The failure point is the chain on the last stage of speed reduction. The gearbox suffered no other damage. The $10 chain was replaced and it's as good as new.
Here are our recommendations regarding the selection of a proper reduction ratio.
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Contact us for custom gearmotors and volume pricing.