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HIGH TORQUE, STEPPING MOTORS: RAS and RBS Series |
| HIGH TORQUE, PERMANENT MAGNET STEPPING MOTORS | |
Designed specifically to combine greater torque and small size, RAS and RBS stepping motors meet many industrial and instrument requirements. Standard 7.5° step angle motors have a torque rating at 4-5 p/s of 23 ounce-inches. The Hi-Torque model is rated at 29 ounce-inches. Models with 15° step angles are rated, respectively, 13 and 17 ounce-inches.
Dual sleeve bearings are standard, ball bearings may be specified. Double-ended shafts also are available.
NOTES
1. Standard RAS and RBS direct drive motors have 4-phase bifilar windings (6 lead wires) and unipolar
operation. Click here for standard lead wire color code and switching sequence.
2. Hurst Stepping Motor Controllers may be used to drive RAS and RBS
motors up to 500 ma per phase.
| Model | Part Number |
Stock Item |
Step Angle (degrees) |
Steps Per Revolution/TH> | 2-Phase Holding Torque (oz-in) |
Rated Torque @ 4-5 p/s (oz-in) |
Input Power (watts) |
Nominal Voltage (volts) |
Winding Resistance (ohms) |
Rotor Inertia (oz-in) |
Temperature Rise (oC) |
Weight (oz) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RAS | 3903-001 | 7.5 | 48 | 33 | 23 | 12 | 12 | 24 | 0.92 | 55 | 26 | |
| RAS | 3906-001 | 7.5 | 48 | 37 | 29 | 12 | 12 | 24 | 0.92 | 55 | 26 | |
| RAS | 3903-002 | 7.5 | 48 | 33 | 23 | 12 | 6 | 6 | 0.92 | 55 | 26 | |
| RAS | 3903-003 | 7.5 | 48 | 33 | 23 | 12 | 24 | 96 | 0.92 | 55 | 26 | |
| RBS | 3904-001 | 15.0 | 24 | 24 | 13 | 12 | 12 | 24 | 0.92 | 60 | 26 | |
| RBS | 3907-002 | 15.0 | 24 | 27 | 17 | 12 | 12 | 24 | 0.92 | 60 | 26 | |
| RBS | 3904-002 | 15.0 | 24 | 24 | 13 | 12 | 6 | 6 | 0.92 | 60 | 26 | |
| RBS | 3904-003 | 15.0 | 24 | 24 | 13 | 12 | 24 | 96 | 0.92 | 60 | 26 |
