![HRSM - Size 8 [20mm]](https://www.kocomotion.de/wp-content/uploads/2025/02/hybrid-rotary_20mm.png)
The size 8 [20mm] Hybrid Rotary Stepper Motor has Max. 0.02N·m of holding torque.
Encoders and 22mm frame planetary gearbox solutions are available.
For special windings or customization, Please contact KOCO for further information.
| Parameter | Unit | 8H2028 | 8H2038 |
|---|---|---|---|
| Current | A | 0.5 | 0.5 |
| Resistance | Ohm | 5.1 | 8.8 |
| Inductance | mH | 1.5 | 2.7 |
| Holding Torque | N.m | 0.012 | 0.02 |
| Rotor Inertia | g·cm² | 2.7 | 3.3 |
| Length | mm | 27.2 | 38 |
| Mass | g | 60 | 80 |
| Size | Nema | 8 | 8 |
| Flange size | mm | 20 | 20 |
| Family Specification | Unit | HRSM – Size 8 [20mm] |
|---|---|---|
| Accuracy step angle | 1.8°±5% | |
| Accuracy Resistance | ±10% / 20 C | |
| Accuracy Inductance | ±20% / 1KHz | |
| Insulation class | B | |
| Duty type | S1 | |
| Dielectrical strength | 500 VAC / 1 KHz / 1 mA / 1 s | |
| Insulation resistance | 100 MΩ / 500 VDC | |
| Permissible radial load(5MM distance from mounting surface) | 15N | |
| Permissible radial load(10MM distance from mounting surface) | 12N | |
| Permissible radial load(15MM distance from mounting surface) | 8N | |
| Permissible radial load(20MM distance from mounting surface) | 6N | |
| End bell | Aluminum alloy | |
| Bearing | Deep groove ball bearing | |
| Magnet | Sintered NdFeB | |
| Shaft | Stainless steel | |
| Wiring | UL 3265, 28 AWG |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
| Parameter | Unit | 8H2028 |
|---|---|---|
| Current | A | 0.5 |
| Resistance | Ohm | 5.1 |
| Inductance | mH | 1.5 |
| Holding Torque | N.m | 0.012 |
| Rotor Inertia | g·cm² | 2.7 |
| Length | mm | 27.2 |
| Mass | g | 60 |
| Size | Nema | 8 |
| Flange size | mm | 20 |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
| Parameter | Unit | 8H2038 |
|---|---|---|
| Current | A | 0.5 |
| Resistance | Ohm | 8.8 |
| Inductance | mH | 2.7 |
| Holding Torque | N.m | 0.02 |
| Rotor Inertia | g·cm² | 3.3 |
| Length | mm | 38 |
| Mass | g | 80 |
| Size | Nema | 8 |
| Flange size | mm | 20 |
Technical specifications are for guidance only, as the individual drives and motors are configured for specific applications. Subject to technical and visual changes.
