3.4-Inch High-Performance Electric Motors
The A34-150 is AmpFlow's 3.4-inch (86mm) high-performance brushed DC motor. With neodymium rare-earth magnets, a 4.2 HP peak output, and 2600 oz-in stall torque at 24V, it delivers exceptional power density in a compact frame. Designed with four large replaceable brushes for high currents. The 1/2-inch shaft, with a 1/8-inch keyway and a standard mounting pattern, allows easy integration into a wide range of drive systems and enclosures.
These motors are available with our custom speed reducers.
We stock these motors, and with a minimum order of 25 units we can also design custom brushed or brushless motors.
| 3.4-Inch High-Performance Electric Motors | |
| Model | A34-150 |
| Diameter (inches) | 3.400 |
| Length (inches) | 4.750 |
| Peak HP | 4.2 |
| Stall Torque (oz-in) | 2600 |
| Efficiency | 79% |
| Voltage | 24V1 |
| RPM @ 24V | 6500 |
| Shaft Diameter (inches) | 1/2 |
| Shaft Length (inches) | 2.0 |
| Keyway (inches) | 1/8 |
| Capacitors | Yes |
| Magnet Type | Neodymium |
| No Load Amps | 6.5 |
| Resistance (Ohms) | 0.045 |
| Kt (oz-in/Amp) | 5.0 |
| Kv (RPM/Volt) | 271 |
| Weight (pounds) | 5.8 |
| Price | $459 |
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| Drawings |  |
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| Order |
1 The above specifications are for 24V. The motor can also operate at lower voltages. The RPM is proportional to the voltage, so halving the voltage results in half the no-load RPM. Shorter duty cycles are recommended to allow the motors time to cool. Please note that the above torque figures are the theoretical peaks when stalled. Operating any high-performance motor while stalled will damage it.
Here are our recommendations regarding the selection of a proper reduction ratio.
Replacement parts are available here.
Warranty
The motors 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.
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Contact us for custom motors and volume pricing: