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Kollmorgen BDS4A-255J-000
Product Name: Kollmorgen BDS4A-255J-000 — Brushless Servo Motor (BD Series)
Product Introduction: The BDS4A-255J-000 is a high-power servo motor from Kollmorgen’s BD series, delivering 2.55 kW continuous power for demanding industrial motion control.
Model Series: BD Series (Brushless Drive-Series Motor)
Detailed content
Product Category: Brushless DC Servo Motor
Key Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 130 mm (BD series) |
| Motor Type | Brushless DC (BLDC) |
| Encoder Type | Incremental, 2048 lines/rev (quadrature A/B/Z) |
| Rated Voltage | 230 V AC (three-phase) |
| Rated Power (Continuous) | 2.55 kW |
| Rated Torque (Continuous) | 8.1 Nm |
| Peak Torque | 24.3 Nm |
| Rated Speed | 3000 RPM |
| Max Speed | 4500 RPM |
| Phase Resistance | 1.3 Ω (typical) |
| Phase Inductance | 7.5 mH (typical) |
| Rotor Inertia | 280 × 10⁻⁶ kg·m² |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP54 |
| Shaft Type | Keyed shaft, 28mm diameter |
| Weight | ~9.2 kg |
| Operating Temperature | 0°C to +40°C |
| Connector | MS-series or cable lead |
Functional Features:
- 2.55 kW continuous power — 11% higher than BDS4A-230J
- 230V AC direct connect — no transformer needed
- Incremental 2048-line encoder — precise velocity control
- High overload capacity — 3× peak for 10 seconds
Structural Features:
- Cast iron stator with aluminum end bells
- Enhanced fin array for superior heat dissipation
- Dual-seal shaft for IP54 ingress protection
- Thru-bolt mounting on NEMA 42 pattern
Working Principle: Identical to BDS4A-230J. Three-phase commutation via external drive. Incremental encoder closes velocity/position loops in the drive.
Advantages:
- Highest power in BD series — 2.55 kW continuous
- Direct mains connection — simplifies system wiring
- Cast iron construction — superior vibration damping
- 3× peak torque — handles shock loads
Applicable Industries:
- Heavy-duty CNC machines
- Large injection molding
- Steel mill auxiliaries
- Mining conveyor drives
- Paper mill winders
Installation Requirements:
- NEMA 42 flange mounting, M8 bolts, 8 Nm torque
- Flexible coupling required — do not use rigid coupling on keyed shaft
- Minimum 120mm clearance for cooling airflow
Usage Notes:
- Must be paired with AKD drive rated for ≥2.55 kW per axis
- Install brake resistor (minimum 50Ω, 500W) for regenerative energy
- Perform thermal derating above 35°C ambient
