Stepper Motors & Actuators Sourcing from China
1 resources tagged with "Motors Actuators"
Stepper motors are the entry point of most motion sourcing from China — NEMA 17 and NEMA 23 bipolar steppers with a 1.8° step angle and 0.4 to 3.1 N·m holding torque dominate 3D printer and CNC builds. The spec that actually matters for compatibility is the driver pairing: a NEMA 17 matched with a TMC2209 (silent, low current) behaves very differently from a NEMA 23 on a DM542. The common mistake is ordering on torque alone and ignoring rated current, inductance, and wiring (4-wire bipolar vs 6-wire), which determines whether your existing driver can actually run it.
Sourcing steppers and actuators means matching motor torque, rated current, and inductance to your driver (TMC2209, DM542, etc.), not just buying on holding torque. The pitfall is a current or wiring mismatch; we confirm the motor's electrical spec against the intended driver.
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FAQ
What is the difference between NEMA 17 and NEMA 23 steppers?
NEMA refers to the faceplate size — NEMA 17 is 42mm, NEMA 23 is 57mm. NEMA 23 delivers more torque for CNC and larger machines; NEMA 17 is standard for 3D printers and lighter axes.
What MOQ do Chinese stepper motor factories ask for?
Standard NEMA 17/23 motors are catalog parts, often available from a few dozen pieces. Custom shaft, winding, or cable configurations push MOQ to the hundreds and add a few weeks of lead time.
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