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AW35HS Series — 35mm Stepper Motor with Precision Planetary Gearbox
The AW35HS series pairs Apexwell's NEMA 14 (35mm), 1.8° hybrid stepper motor with an HPR35 precision planetary gearbox, offering motor holding torque from 0.12 N·m to 0.36 N·m and rated output torque up to 10 N·m after reduction. With three available gear-train stages and reduction ratios from 3:1 to 200:1, backlash is held to ≤15 arcmin at no load, positioning this series above the AW28HS precision gearmotor for applications needing more output torque on a still-compact frame.
Shared Specifications (all models)
| Parameter | Value |
|---|---|
| Step Angle | 1.8° |
| Lead Wires | 4 (bipolar) |
| Gear Material | Metal |
| Output Bearing | Ball bearings |
| Max Radial Load | ≤27 kgf |
| Max Shaft Axial Load | ≤10 kgf |
| Backlash (no load) | ≤15 arcmin |
| Noise | ≤55 dB |
Motor Model Comparison
| Model | Body Length | Phase Current | Phase Resistance | Phase Inductance | Holding Torque | Rotor Inertia | Mass |
|---|---|---|---|---|---|---|---|
| AW35HS28-0504A | 28 mm | 0.5 A | 19.5 Ω | 17.5 mH | 0.22 N·m | 21.0 g·cm² | 0.12 kg |
| AW35HS30-0804A | 30 mm | 0.8 A | 3.5 Ω | 3.5 mH | 0.12 N·m | 21.6 g·cm² | 0.13 kg |
| AW35HS34-0804A | 34 mm | 0.8 A | 4.3 Ω | 6.2 mH | 0.20 N·m | 38.0 g·cm² | 0.16 kg |
| AW35HS44-1504A | 44 mm | 1.5 A | 2.1 Ω | 2.8 mH | 0.25 N·m | 43.0 g·cm² | 0.18 kg |
| AW35HS50-1704A | 50 mm | 1.7 A | 2.0 Ω | 3.2 mH | 0.36 N·m | 56.0 g·cm² | 0.21 kg |
HPR35 Precision Planetary Gearbox Specifications
| Parameter | 1-Stage | 2-Stage | 3-Stage |
|---|---|---|---|
| Reduction Ratio | 3, 4, 5, 6, 7 | 9, 15, 20, 25, 30, 35, 42 | 45, 100, 120, 140, 150, 175, 200 |
| Gearbox Length (L1) | 40 mm | 49.5 mm | 59 mm |
| Rated Output Torque | 5–7 N·m | 7–9 N·m | 8–10 N·m |
| Transmission Efficiency | 96% | 94% | 90% |
| Weight | 170 g | 220 g | 280 g |
Momentary torque moment is rated at two times the rated allowable load across all three stages. 19 reduction ratios are available in total (3 to 200:1), with rated output torque rising to 10 N·m at the highest reduction ratios.
Typical Applications
With backlash held to ≤15 arcmin and output torque up to 10 N·m on a 35mm footprint, the AW35HS precision series fits semiconductor and optical handling equipment, medical and surgical robotics, small precision CNC and inspection stages, and other positioning tasks where the AW28HS precision line doesn't have enough output torque but a larger frame isn't needed.
Why Choose the AW35HS Precision Gearmotor
Backlash of ≤15 arcmin makes this series suitable for applications where positioning repeatability matters more than cost, and the intermediate NEMA 14 frame gives more torque headroom than the AW28HS precision line without the bulk of a NEMA 16 or NEMA 17 gearmotor. Nineteen reduction ratios across three gear-train stages let one motor selection be tuned across a wide speed/torque window without changing the mounting footprint, and noise is held to ≤55 dB for use in lab and clean-room environments. For applications where backlash tolerance is less critical, Apexwell's standard planetary gearmotor line on the same frame offers a lower-cost alternative. Custom shaft configurations and encoder feedback are available on request.
We can customize the electrical parameters of the motor and geometric dimensions such as the motor output shaft size according to customer requirements. Accessories including pulleys, eccentric gearboxes, planetary gearboxes and encoders can also be added. For more products and detailed specifications, please download the product catalog from the Download Center.
