Permanent Magnet AC Synchronous Motor Family
Series RA Direct Drive Synchronous
Hysteresis Synchronous RA Direct Drive Specifications:
| Output Speed: | 300 RPM |
| Lead Wire: | 4 leads 22AWG (approx. 12 inches [304.8 mm]) |
| Operation Ambient Temp: | -10°C to +40°C (approx.) |
| Shaft Bearing: | Sleeve or Ball Bearing Available |
 Recognition: |
E53578(N), Component-Impedance Protected Motors,
115Vac 60 Hz Standard Rotor |
 Certification: |
Card No. 42576, Motors and Generators, 115 Vac, 60 Hz, 11 watts max. |
| Capacitor is required for operation. | |
| Note: Typical data subject to change without notification | |
Addtional Information:
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The rugged RA series is the largest direct drive motor of the HURST® permanent magnet synchronous line with dynamic torque ratings of 15 ounce-inches [105.9 mN-m] (standard) and 20 ounce-inches [141.2 mN-m] Hi-Torque. At 60Hz rotor speed is 300 RPM. Motors are available with a single or double ended shaft. Sleeve and ball bearings are available. RA motors are designed to assure reliable starting in the desired direction and to eliminate unwanted reversal of rotation under load. Motors listed are 115 VAC at 60 Hz and require a capacitor. |
RA Direct Drive Drawings:
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RA Direct Drive Diagrams:
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Add to Cart |
Model |
Part Number |
Rated Torque (oz-in) |
Rated Torque (mN-m) |
Output Speed (RPM) 60Hz |
Input Power (watts) |
Voltage (Vac) 60Hz |
Full Load Temp Rise (degC) |
Capacitor Value (mfd) |
Weight (oz) |
Weight (grams) |
| RA | 3901-001 | 15 | 105.9 | 300 | 11 | 115 | 37 | 1 | 26 | 737.1 | |
| RA | 3905-0012 | 20 | 141.2 | 300 | 14.5 | 115 | 46 | 1.3 | 26 | 737.1 | |
| RA | 3911-0011 | 15 | 105.9 | 300 | 11 | 115 | 37 | 1 | 26 | 737.1 | |
| RA | 3915-0011, 2 | 20 | 141.2 | 300 | 14.5 | 115 | 46 | 1.3 | 26 | 737.1 |
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Notes: 1 Shaft Bearing: Ball Bearing. 2 Hi-Torque Rotor Construction. |