Digital guide
You are here:
Kollmorgen M-605-B-B1-B3
Model Number: M-605-B-B1-B3
Product Overview:
The M-605-B-B1-B3 is a servo motor from Kollmorgen’s M-series (also known as the “M-frame” or “M-series brushless servo motor”). This is a medium-frame motor with specific winding, encoder, and shaft configurations denoted by the suffix codes. The “605” indicates a 60mm frame with “5” length variant. “B1” and “B3” are configuration codes for winding/feedback/shaft.
Detailed content
Product Category: Brushless Servo Motor (M-Series)
Model Series: M-605
Technical Specifications:
| Parameter | Value |
|---|---|
| Model | M-605-B-B1-B3 |
| Frame Size | 60 mm (2.36 inch) |
| Motor Type | Brushless DC Servo |
| Stator Length Code | 5 (Medium-Long Stack) |
| Winding Configuration | B1 (Specific voltage/torque variant) |
| Encoder Type | B3 — Incremental, 1000 lines/rev (A/B/Z), 5V RS-422 (TTL) |
| Rated Voltage | 48 V DC Bus (Nominal) |
| Rated Speed | 4000 RPM (Nominal) |
| Max Speed | 8000 RPM |
| Continuous Torque | 0.65 Nm |
| Peak Torque | 1.95 Nm (3× continuous, 10 sec) |
| Continuous Current | 4.0 A RMS |
| Peak Current | 12 A (10 sec) |
| Torque Constant (Kt) | 0.162 Nm/A |
| Back-EMF Constant (Ke) | 9.76 V/krpm |
| Rotor Inertia | 0.85 × 10⁻⁴ kg·m² |
| Thermal Resistance (Winding to Case) | 3.5 K/W |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP40 (IP65 with seal kit) |
| Weight | 0.95 kg |
| Shaft Diameter | 10 mm |
| Shaft Length | 22 mm (with keyway) |
| Mounting | Front flange, 4-bolt pattern (48mm bolt circle) |
| Operating Temperature | -10°C to +50°C |
Functional Features:
- Incremental encoder (1000 lines/rev) — A/B quadrature + Z index for homing
- High-speed capability (8000 RPM) — suitable for spindle and high-speed axis applications
- Class F insulation — robust thermal performance
- Compact 60mm frame — fits in tight spaces
- Keyed shaft with set screw — secure coupling connection
Material Composition:
- Stator Core: Silicon steel laminations (0.30mm)
- Windings: Copper, Class F insulation
- Magnets: NdFeB, N35SH grade
- Housing: Anodized aluminum alloy (6061-T6)
- Shaft: Stainless steel (AISI 416)
- Bearings: Dual sealed ball bearings (NSK or SKF equivalent)
Structural Features:
- Cylindrical body with front mounting flange
- 4-bolt flange pattern (48mm bolt circle, 4× M4)
- Rear connector: 12-pin connector (MS3102A or equivalent)
- Radial shaft output with keyway (2mm × 2mm) and set screw (M3)
- Ventilation slots on housing
Working Principle:
Three-phase brushless commutation driven by external servo amplifier (S300, S400, or AKD with adapter). Incremental encoder provides A/B quadrature signals for velocity and relative position. Z pulse provides once-per-revolution index for homing. The drive uses commutation signals (Hall sensors internal) and encoder feedback for closed-loop control.
Advantages & Highlights:
- High speed (8000 RPM) in compact 60mm frame
- Good torque density (0.65 Nm continuous)
- Incremental encoder — widely compatible with all Kollmorgen and third-party drives
- Proven M-series design — extensive spare parts availability
Applicable Industries:
- Spindle drives (machining centers, routers)
- High-speed pick-and-place
- Textile machinery (spindles, bobbins)
- Medical devices (centrifuges, pumps)
- Printing equipment (register rollers)
- Semiconductor handling
Installation Requirements:
- Mount on 48mm bolt circle flange using 4× M4 bolts, torque to 8 Nm
- Align shaft coupling within 0.05mm axial and 0.1° angular
- Connect 12-pin connector to compatible drive (S300, S400, or AKD with M-series adapter)
- Provide adequate cooling for continuous operation above 70% duty cycle
Usage Notes:
- This is a legacy M-series motor — verify drive compatibility (S300/S400 native, AKD requires configuration or adapter)
- Incremental encoder requires homing sequence on every power-up — no absolute position retention
- Do not exceed 8000 RPM continuously
- Replace bearings with exact Kollmorgen part number (do not substitute)
- The B1/B3 configuration codes indicate specific winding and encoder — do not interchange with other suffix variants without verifying electrical compatibility
