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Kollmorgen B-402-A-21
Product Name: B-Series Brushless DC Servo Motor
Model Series: B-Series (Brushless Commutated Servo Motor)
Product Overview:
Medium-frame brushless DC servo motor offering a balance of torque and speed for general-purpose motion control. Commutated design with high-resolution absolute encoder feedback.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 402 (102mm Flange) |
| Flange Diameter | 102mm |
| Winding Code | A-21 |
| Continuous Torque | 1.3 Nm |
| Peak Torque | 3.9 Nm |
| Max Speed | 5,000 RPM |
| Rated Voltage | 48–170 VDC (winding A-21) |
| Encoder Type | 17-bit Multi-turn Absolute (Hiperface DSL) |
| Encoder Resolution | 131,072 counts/rev (single-turn) |
| Motor Weight | Approx. 1.8 kg |
| Protection Rating | IP65 (with connector) |
| Insulation Class | Class H (180°C) |
Material Composition:
- Stator: M-19 silicon steel laminations, epoxy-coated
- Rotor: SmCo (Samarium Cobalt) permanent magnets
- Housing: Anodized aluminum alloy (6061-T6)
- Shaft: Hardened stainless steel (17-4PH)
- Bearings: Sealed angular contact ball bearings (pre-loaded)
Structural Features:
- Flange mount with 4× M6 mounting holes on 102mm bolt circle
- Integrated connector (M23, 12-pin) for power, brake, encoder
- Keyed shaft (standard, DIN 6885-1)
- Labyrinth seal at shaft exit
Working Principle:
Electronic commutation with Hall-sensor feedback for rotor position. Drive energizes stator phases in sequence to create rotating field. 17-bit Hiperface DSL encoder provides absolute position across 128 turns. Closed-loop servo control maintains position/velocity/torque per drive command.
Key Advantages:
- 102mm flange — standard mounting interface for many machines
- SmCo magnets — superior high-temperature performance vs. NdFeB
- 17-bit encoder — 131,072 counts/rev for sub-arc-second resolution
- 5,000 RPM — higher speed than B-204 for same torque class
- Commutated design — smooth low-speed operation, no cogging
Applicable Industries:
- Conveyor systems
- Woodworking machines
- Food processing equipment
- Textile machines
- Material handling
Installation Requirements:
- Mount on 102mm bolt circle, torque M6 bolts to 8 Nm
- Shaft alignment: ≤ 0.05mm TIR
- Ambient: -20°C to +50°C
- Minimum 80mm clearance for ventilation
Usage Precautions:
- Do not run continuously at peak torque — thermal limit is 1.3 Nm continuous
- Brake voltage: 24 VDC ±10% (if equipped with brake option)
- Do not exceed 5,000 RPM — bearing speed limit
- Encoder cable shield must be grounded at drive end only
