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For sale here is a NEMA 34 5.5A 640oz/in Stepper Motor (KL34H280-55-4A)
This large and powerful NEMA34 stepper motor can move a lot of weight at 640 oz/in and 5.5 amps current draw per phase. 4 wire bi-polar operation; with a 1/2" single drive shaft.
NEMA 34 HIGH TORQUE STEPPER MOTOR 640 oz-in
640 oz In. Hybrid Motor
1.8° /200 Steps Per Rev.
5.5A Amps Current Per Phase ( Bipolar Parallel)
4-wire Bi-polar, NEMA 34 Frame
A+: Black
A-: Green
B+: Red
B-: Blue
Drawing: