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What options are there for integrated motor and screw designs?
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Motorized Lead Screw - Stepper Motor Linear Actuator
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NEMA 23 High Torque Threaded Shaft Hybrid Stepper Motor (57SHD0203-01TK) - China Stepper Motor, Stepping Motor | Made-in-China.com
Buy Stepper Motor 39BYGL215A with threaded shaft Botland - Robotic Shop