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Product Introduction:
The B-606-BA-91-TR is a high-torque brushless AC servo motor from Kollmorgen’s B-Series with a 606 frame size (larger than B-604), featuring a high-torque (BA) winding and long stack (91) for maximum continuous torque output. The “TR” shaft configuration provides a threaded shaft with keyway, allowing direct coupling to leadscrews, timing belt pulleys, or gearboxes. This motor is engineered for high-torque, moderate-speed applications requiring robust mechanical output such as robot base axes, heavy conveyor drives, and press machines.
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 606 (Larger 60 mm Frame) |
| Stack Length | 91 (Long) |
| Winding Code | BA (High Torque) |
| Shaft Type | TR (Threaded + Keyway) |
| Rated Voltage | 48 VDC (Bus) |
| Continuous Torque | 5.0 Nm (Nominal) |
| Peak Torque | 15.0 Nm (3× continuous) |
| Max Speed | 3,500 RPM |
| Torque Constant (Kt) | ~0.40 Nm/A |
| Back-EMF Constant (Ke) | ~3.8 V/krpm |
| Phase Resistance | ~0.4 Ω |
| Phase Inductance | ~0.6 mH |
| Rotor Inertia | ~35 g·cm² |
| Weight | ~3.2 kg |
| Insulation Class | Class H (180°C) |
| IP Rating | IP65 (with connector) |
| Operating Temperature | -20°C to +85°C |
| Feedback | Resolver (Standard) |
Functional Features:
- BA (High-Torque) winding delivers maximum continuous torque at low-to-mid speed
- 606 frame size provides significantly higher torque than B-604 variants
- Long stack (91) increases copper volume for superior thermal performance
- Threaded shaft with keyway (TR) enables direct mechanical coupling without adapter
- Integrated resolver with multi-turn absolute position feedback
- High overload capacity — 3× continuous torque for short durations
Structural Features:
- Stator: 72-slot laminated silicon steel, fully epoxy-potted for thermal transfer
- Rotor: NdFeB magnets, V-shaped interior magnet configuration for high torque density
- Housing: 6061-T6 Anodized Aluminum Alloy, larger diameter than B-604
- Shaft: Hardened 416 Stainless Steel, 16 mm diameter, M8×1.25 thread
- Connector: MIL-DTL-5015 14-pin circular connector
- Mounting: 4-bolt flange pattern (larger bolt circle than B-604)
Advantages:
- 5.0 Nm continuous torque — highest in the 60 mm frame class
- 606 frame provides 40% more torque than B-604 equivalent
- Threaded shaft eliminates coupling BOM and reduces assembly steps
- IP65 rated for harsh industrial environments
- Long stack thermal design supports sustained high-torque operation
Applicable Industries:
- Robot base and shoulder axes (high payload)
- Heavy-duty CNC machine tables
- Press brake and stamping machine drives
- Large conveyor main drives
- Extruder and injection molding screw drives
Installation Requirements:
- Mount using 4-bolt flange (bolt pattern specific to 606 frame)
- Torque flange bolts to 6.0 Nm
- For TR shaft: engage M8 threaded coupling directly — use Loctite 243 on fasteners
- Verify shaft runout <0.03 mm TIR at coupling interface
- Provide forced-air cooling for continuous operation above 70% rated torque
Usage Notes:
- Maximum continuous operation at rated torque requires ambient temperature ≤40°C
- Do not apply axial loads exceeding 100 N on the shaft
- Perform auto-tune via drive after any motor replacement
- Replace resolver cable if signal loss or noise is detected during operation
