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Kollmorgen S406M-CA
Model Code Breakdown:
- S — AKM Servo Motor (S-Series designation)
- 40 — 40mm Stator Frame Size (Outer Diameter)
- 06 — Stack Length Code 6 (Longest in 40mm family)
- M — Modified/Metric winding variant
- CA — Configuration: With Electromagnetic Holding Brake (24V DC), Shaft with Keyway, Connector M23
Detailed content
Product Overview:
The S406M-CA is a high-torque-density brushless DC servo motor from Kollmorgen’s AKM product line. It features slotless stator construction for zero cogging torque, making it ideal for precision positioning and smooth low-speed operation.
Technical Specifications:
| Parameter | Value |
|---|---|
| Stator Frame Size | 40mm (Outer Diameter) |
| Stack Length | 6 (Longest — highest torque variant in 40mm series) |
| Continuous Torque | ~1.7 Nm (at 25°C case temp) |
| Peak Torque | ~5.1 Nm (10-second rating) |
| Rated Speed | 3000 RPM (continuous) |
| Max Speed | 6000 RPM |
| Rated Voltage | 48V DC (bus voltage dependent) |
| Winding Type | Slotless, Ironless Rotor |
| Pole Count | 8 poles |
| Holding Brake | Yes — 24V DC electromagnetic brake, 2.5 Nm holding torque |
| Brake Release Time | <20 ms |
| Shaft Type | Metric shaft with keyway (DIN 6885-1) |
| Shaft Diameter | 10mm with key 3×3×18mm |
| Encoder (Standard) | Sin/Cos 1Vpp, 2048 lines/rev (8192 counts/rev after quadrature) |
| Electrical Connector | M23 12-pin |
| Insulation Class | Class H (180°C) |
| IP Rating | IP65 (with connector sealed) |
| Weight | ~0.85 kg (with brake) |
| Operating Temperature | -10°C to +55°C (with brake: -10°C to +40°C) |
Structural Features:
- Slotless Stator: Eliminates cogging torque entirely — enables sub-micron positioning repeatability
- Ironless Rotor: Ultra-low rotor inertia for fastest acceleration response
- Hollow Shaft Option Available: CA variant uses solid shaft with keyway; hollow shaft is alternate config
- Preloaded Bearings: Angular contact ball bearings, greased for life (L10 > 20,000 hours)
Advantages:
- Zero cogging torque — smooth motion at any speed
- Highest torque density in 40mm frame class
- IP65 rating allows washdown and harsh environment deployment
- Integrated brake holds load on power loss — critical for vertical axis
Applicable Industries:
Semiconductor Wafer Handling, Medical Robotics, Optical Alignment Stages, Pick-and-Place Machines, Laboratory Automation, Gimbal Systems
Installation Requirements:
- Mount with 4× M4 mounting holes on 50mm bolt circle
- Do not exceed axial load of 100N or radial load of 250N
- Brake requires dedicated 24V DC supply — do not share with logic supply
- Cable bend radius minimum: 5× cable diameter
Usage Notes:
- Brake must be energized before motion commences — de-energizing brake during rotation causes mechanical shock
- Recommended drive: AKD-P00306-NEB or AKD-T01207-ICA for optimal current matching
- Do not disassemble — rotor magnetization will be permanently damaged
