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The NEMA 11 (28mm) hybrid ball screw stepper motor integrates a high-torque 2-phase 1.8° stepper motor with a precision ball screw assembly, providing efficient linear motion in a compact 28mm frame. The ball screw mechanism, featuring recirculating steel balls, delivers up to 90% efficiency with near-zero backlash and minimal friction, ensuring long-term positioning accuracy and repeatability. With higher thrust capacity than the NEMA 8, this linear actuator is suitable for a broader range of applications requiring compact dimensions and reliable precision.
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 |
| 28 | 2.1 | 1 | 2.1 | 1.5 | 4 | 9 | 120 | 34 |
| 28 | 3.7 | 1 | 3.7 | 2.3 | 4 | 13 | 180 | 45 |
