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Frame Size: 74 mm (outer diameter)
Stack Length Code: Q (medium-long stack)
Winding Code: GN1NR
Encoder Type: Integrated multi-turn absolute encoder ( BiSS-C or EnDat 2.2, depending on sub-variant)
Encoder Resolution: 20-bit single-turn / 12-bit multi-turn (typical for AKM series)
Rated Voltage: 48 VDC (AKM series nominal bus voltage)
Rated Speed (GN1NR): Approximately 3000 RPM (verify against datasheet)
Rated Torque (GN1NR): Approximately 1.5–2.0 Nm (verify against datasheet for exact value)
Peak Torque: Up to 3× rated torque for short duration
Continuous Current (RMS): Determined by winding GN1NR — typically 4–6 A RMS
Peak Current: Up to 18 A (3× rated)
Torque Constant (Kt): Defined by GN1NR winding — typically 0.3–0.5 Nm/A
Back-EMF Constant (Ke): Matched to Kt for 48 VDC bus operation
Rotor Inertia: Low inertia design (typically 30–50 × 10⁻⁶ kg·m² for 74Q frame)
Mechanical Time Constant: < 15 ms (typical)
Electrical Time Constant: < 5 ms (typical)
Cooling Method: Conduction cooling (housing mounted to heatsink or machine structure)
Insulation Class: Class F (155 °C) or Class H (180 °C) — verify per revision
Protection Rating: IP65 (with shaft seal and connector cap)
Shaft Type: Smooth shaft with keyway (standard) or hollow shaft (optional variant)
Bearing Type: Angular contact ball bearings, preloaded, lifetime lubricated
Weight: Approximately 1.8 kg (motor only, without encoder)
Material Composition:
- Stator laminations: 0.2 mm silicon steel, laser-cut
- Rotor: NdFeB permanent magnets, Class H rated (180 °C)
- Housing: Aluminum alloy, anodized black
- Shaft: Hardened stainless steel (AISI 440C or equivalent)
- Connectors: M23, gold-plated pins
Electrical Connections:
- Power: 3-phase U/V/W + PE
- Encoder: BiSS-C / EnDat 2.2 / Hiperface (depending on variant)
- Thermistor: PTC 1 kΩ (motor temperature monitoring)
Key Performance Parameters:
| Parameter | Value |
|---|---|
| Frame Size | 74 mm |
| Stack Length | Q |
| Winding | GN1NR |
| Rated Voltage | 48 VDC |
| Rated Torque | ~1.5–2.0 Nm |
| Rated Speed | ~3000 RPM |
| Continuous Current | ~4–6 A RMS |
| Encoder | Multi-turn absolute |
Applicable Industries: Collaborative robots, AGVs, medical devices, semiconductor handling, light industrial automation, laboratory automation
Installation Requirements:
- Mount motor with 4 mounting bolts, torque per specification (typically 4–6 Nm)
- Ensure housing is in direct thermal contact with mounting surface (use thermal paste or pad)
- Connect power cables to U/V/W/PE terminals (M23 connector)
- Connect encoder cable to feedback port (M23 or M12 depending on variant)
- Verify encoder alignment: shaft runout < 0.02 mm TIR
Operating Environment:
- Ambient temperature: -10 °C to +40 °C (with forced air cooling, higher possible)
- Humidity: Up to 95% non-condensing
- Altitude: Up to 1000 m












