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BAUMÜLLER BM4432-SI1-21242-0309
Model Series: BM44 Series — Medium-Frame Synchronous Servo Motor (Combined Code Variant)
Product Introduction:
The BM4432-SI1-21242-0309 is a combined-notation variant of the BM4432-SI1-212 motor with configuration code 42-0309. The notation 21242-0309 merges the winding code and configuration code into a single identifier, commonly used in Baumüller order processing systems. All technical parameters are identical to Record 004.
Detailed content
Type Designation Breakdown:
- BM44 — BM44 Series Servo Motor
- 32 — Frame Size 32 (outer diameter 160 mm)
- S — Synchronous Servo Motor
- I — Smooth Shaft, Natural Convection Cooling
- 1 — Single-Turn Absolute Encoder
- 21242-0309 — Combined Winding + Configuration Code
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 32 |
| Stator Outer Diameter | 160 mm |
| Cooling Method | IC 411 — Natural Convection (Self-Cooled) |
| Shaft Type | Smooth Shaft (Without Keyway) |
| Encoder Type | Single-Turn Absolute Encoder (EnDat 2.1, 14-bit / 128 periods) |
| Rated Torque (M0) | 1.2 Nm |
| Maximum Torque (Mmax) | 3.6 Nm |
| Rated Speed (nN) | 2500 rpm |
| Maximum Speed (nmax) | 5000 rpm |
| Rated Power (PN) | 0.31 kW (continuous) |
| Peak Power | 0.94 kW |
| Rated Voltage (UN) | 400 V AC (three-phase) |
| Rated Current (IN) | 0.95 A |
| Phase Resistance (R) | 2.8 Ω (20°C) |
| Phase Inductance (L) | 7.2 mH |
| Moment of Inertia (Jm) | 0.00038 kg·m² (380 g·cm²) |
| Protection Class | IP65 (with connector) |
| Insulation Class | F (155°C) |
| Ambient Temperature Range | -10°C to +40°C |
| Weight | Approximately 4.5 kg |
| Connector Type | M23 x 12-pin (power + encoder) |
Functional Features:
- Identical to Record 004 (BM4432-SI1-212 42-0309) — combined notation only
- Single-turn absolute encoder — 14-bit resolution, 16,384 counts/rev
- Smooth shaft — clamping hub coupling, zero backlash
- High-torque winding 212 — optimized for 1.2 Nm continuous operation
- Natural convection cooling — no fan, silent operation
Structural Characteristics:
- Housing: Aluminum die-cast, anodized
- Stator: 0.35 mm grain-oriented silicon steel
- Rotor: NdFeB permanent magnet, 4-pole
- Bearings: Sealed ball bearings, L10 ≥ 30,000 hours
- Shaft: C45 steel, Ø28 mm smooth, Ra 0.4 µm
Working Principle:
Three-phase sinusoidal commutation from servo drive creates rotating stator field. NdFeB rotor locks synchronously. Single-turn absolute encoder provides 14-bit position feedback. Drive performs closed-loop position/velocity/torque control at bandwidth >1 kHz.
Advantages & Highlights:
- Same as Record 004
- Combined code notation simplifies ordering in Baumüller systems
- High torque, compact frame — excellent power density
Applicable Industries:
- Same as Record 004
Installation Requirements:
- Same as Record 004
Usage Precautions:
- Same as Record 004
