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A Nema 23 (57 mm frame) closed-loop stepper kit that pairs a hybrid stepper motor with an HB808C servo driver and an encoder for feedback. Closed-loop control means the driver corrects for lost steps, so it holds position under load better than an open-loop stepper and runs cooler at rest because current drops when the motor is idle. Four torque grades are offered, from 1.2 N·m up to 3 N·m, all at 4 A with an 8 mm single shaft. It suits builders of CNC, laser, engraving, dispensing and packaging machines who want stepper simplicity with servo-like stall resistance.
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Lowest price we've seen: $75.00 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
This kit pairs a Nema 23 (57HSZ) closed-loop stepper motor with an HB808C servo driver. The motor has a single output shaft with an 8 mm diameter and comes with a 3-meter motor wire.
The closed-loop design uses a feedback encoder with space vector current control and vector smoothing filtering. This gives good resistance to the low-frequency resonance that affects traditional stepper motors. At rest, the current is almost zero, so the motor runs with low heating.
The servo control provides high torque output and fast dynamic response, with step servo speeds of 600 to 2000 RPM. Torque decreases above 1000 RPM, and the maximum speed is 2000 RPM. The kit is used in glue dispensing, woodworking, welding, screw, zipper, winding, surface mounting, packaging, engraving and laser machines, and in LED and electronic equipment.