The new 0.9 degree stepper motors, featuring 400 full-steps or 800 half-steps per revolution with normal stepper drives, will provide smoother and quieter performance than the standard 1.8 degree motors in applications where microstepping drives are considered too elaborate, not available or where a basic half step drive is already specified.
The new compact NEMA motors are all 2-phase, 4-lead bipolar connected and range from size 8 (about 20 mm square) to size 14 (around 35 mm square). Throughout the range the motor length is from around 26 to 53mm with available holding torque from 1.5 to 18Ncm. The 0.9 degree motors are offered in NEMA frame sizes 14, 17 and 23.
Mclennan supply a complete range of compatible low-cost stepper drives and motion controls from AMP to complement the new motors, from the 2035 full and half step drive to the STR2 advanced microstepping drive which includes simple dip-switch parameter set-up.