We are now offering two new NEMAÂ 17-size pancake bipolar stepper motors from Sanyo, each featuring an integrated high-resolution quadrature encoder and home channel for absolute positioning.
| Stepper motor |
Steps per revolution |
Current rating (per coil) |
Voltage rating |
Resistance (per coil) |
Holding torque |
| #2279 42×31.5mm |
200 |
1Â A |
5.4Â V |
5.4 Ω |
1.9Â kg-cm (26Â oz-in) |
| #2278 42×24.5mm |
200 |
1Â A |
3.5Â V |
3.5 Ω |
800Â g-cm (12Â oz-in) |
 | Side view of the SS2422-50XE100 42×31.5mm Sanyo pancake stepper motor. |
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 | Side view of the SS2421-50XE100 42×24.5mm Sanyo pancake stepper motor. |
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The integrated quadrature encoder operates from 5 V and has a resolution of 1000 P/R, which allows for 4000 counts per revolution (CPR) of the output shaft when counting both edges (i.e. rising and falling) of both channels (i.e. A and B). In addition to the A and B channel outputs, the encoder has a home channel, Z, that pulses once per revolution and can be used for absolute positioning. The encoder also has outputs for the inverse of A, B, and Z. A 15 cm (6″) encoder cable is included.
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