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Detailed content
- 99 — Custom Length Specification (99mm stack length)
- 265 — Winding Code / Electrical Variant
Technical Specifications:
| Parameter | Value |
|---|---|
| Outer Diameter (OD) | 60.5 mm (2.38 in) |
| Inner Diameter (ID) | 25.0 mm (0.98 in) |
| Stack Length | 99 mm (3.90 in) |
| Continuous Torque | 0.50 Nm |
| Peak Torque | 1.50 Nm (10 sec duty) |
| Torque Constant (Kt) | 0.18 Nm/A |
| Voltage Constant (Ke) | 18.5 V/krpm |
| Terminal Resistance (R) | 4.2 Ω (25°C) |
| Terminal Inductance (L) | 1.8 mH |
| Rotor Inertia | 1.2 × 10⁻⁴ kg·m² |
| Max Speed (continuous) | 4,000 RPM |
| Weight | 0.32 kg |
| Thermal Resistance (Rth) | 6.5 K/W |
| Insulation Class | Class B (130°C) |
Structural Features:
- Housing: None (frameless — requires customer integration)
- Magnets: Samarium Cobalt (SmCo) — High-temperature grade
- Windings: Copper, Class B insulation, vacuum impregnated
- Commutation: 3-phase brushless (requires external drive)
- Bearings: Not included (customer-supplied or integrated into load)
Material Composition:
- Stator Lamination: Silicon Steel (M-19 grade, 0.35mm lamination)
- Shaft/Bore: Stainless Steel 17-4PH (hardened)
- Magnets: SmCo (Samarium Cobalt, Grade 2:17)
- Wire: Polyimide-coated copper magnet wire (Class 180)
Working Principle:
Brushless DC torque motor operates on Lorentz force principle. Three-phase stator windings are energized in sequence by an external servo drive, creating a rotating magnetic field that interacts with permanent magnets on the rotor, producing continuous torque proportional to current.
Applicable Industries: Direct-drive rotary stages, gimbal systems, antenna positioning, optical scanning, semiconductor wafer handling, surgical robotics.
Installation Requirements:
- Press-fit into customer housing (interference fit: 0.02–0.05mm)
- Balancing: G2.5 (ISO 1940) recommended for speeds >3000 RPM
- Thermal path: Conductive mounting to external heatsink required
- Ambient: -20°C to +60°C
