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The NEMA 17 (42mm) hybrid ball screw stepper motor combines a high-performance 2-phase 1.8° stepper motor with a precision ball screw assembly, delivering efficient rotary-to-linear motion conversion in a compact 42mm frame. The ball screw mechanism, featuring recirculating steel balls, achieves up to 90% efficiency with near-zero backlash and minimal friction — ensuring high positioning accuracy, repeatability, and long operational life. This linear actuator is a popular choice for a wide range of desktop and light industrial applications where reliability and precision are essential.
Key Distinction: This is a ball screw linear actuator — offering higher efficiency, longer life, and better positioning accuracy than lead screw (ACME/T-type) alternatives, at a higher cost point.
| 电机规格 Motor size | 相电压(V) Voltage/Phase | 相电流(A) Current/Phase | 相电阻(Ω) Resistance/Phase | 相电感(mH) Inductance/Phase | 电机线数 Number of lead wires | 转子惯量(g·cm²) Rotor inertia | 电机重量(g) Motor weight | 电机长度L(mm) Motor length |
| 42 | 2.6 | 1.5 | 1.8 | 2.6 | 4 | 35 | 250 | 34 |
| 42 | 3.3 | 1.5 | 2.2 | 4.6 | 4 | 55 | 290 | 40 |
| 42 | 2 | 2.5 | 0.8 | 1.8 | 4 | 70 | 385 | 48 |
| 42 | 2.5 | 2.5 | 1 | 2.8 | 4 | 105 | 450 | 60 |
