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BAUMÜLLER BM4432-SI1-212 42-0309-004090 70
Model Series: BM44 Series — Medium-Frame Synchronous Servo Motor (Extended Configuration)
Product Introduction:
The BM4432-SI1-212 42-0309-004090 70 is an extended-configuration variant of the BM4432-SI1-212 motor. The additional codes 004090 70 specify further customization parameters, including possible special winding, modified connector, extended shaft, or specific coating/finish for a particular OEM application.
Detailed content
Type Designation Breakdown:
- BM44 — BM44 Series Servo Motor
- 32 — Frame Size 32
- S — Synchronous Servo Motor
- I — Smooth Shaft, Natural Convection Cooling
- 1 — Single-Turn Absolute Encoder
- 212 — High-Torque Winding Code
- 42-0309 — Application Configuration Code
- 004090 70 — Extended Customization Code (winding/shaft/connector/finish specification)
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 32 |
| Stator Outer Diameter | 160 mm |
| Cooling Method | IC 411 — Natural Convection (Self-Cooled) |
| Shaft Type | Smooth Shaft (Ø28 mm, length per 004090 70 spec) |
| Encoder Type | Single-Turn Absolute Encoder (EnDat 2.1, 14-bit) |
| 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) |
| Weight | Approximately 4.5 kg (may vary per 004090 70 spec) |
| Connector Type | Per 004090 70 specification (M23 or customer-defined) |
Functional Features:
- Extended code 004090 70 defines precise customization — this may include special shaft length, modified winding for different voltage, alternate connector orientation, or special surface treatment
- Maintains all core features of BM4432-SI1-212: smooth shaft, single-turn absolute, natural cooling
- High-torque winding 212 delivers 1.2 Nm continuous torque
- Configuration 42-0309 indicates pre-validated OEM package parameters
Structural Characteristics:
- Housing Material: Aluminum alloy die-cast — finish per 004090 70 specification
- Stator: 0.35 mm grain-oriented silicon steel lamination stack
- Rotor: NdFeB permanent magnet, 4-pole, with retention sleeve
- Bearings: Sealed precision ball bearings, L10 ≥ 30,000 hours
- Shaft: C45 steel, smooth, dimensions per 004090 70 drawing
Working Principle:
Identical to standard BM4432-SI1-212 synchronous servo operation. The 004090 70 customization modifies electrical or mechanical interface parameters while preserving the core electromagnetic design. The servo drive provides sinusoidal three-phase current to the windings, and the absolute encoder delivers real-time position feedback for closed-loop control.
Advantages & Highlights:
- Fully customized variant — tailored to exact OEM requirements
- All BM4432 performance benefits retained
- Absolute encoder — zero homing time
- Smooth shaft — zero-backlash coupling
- High torque density in medium frame size
Applicable Industries:
- OEM machinery builders (custom specifications)
- Special-purpose servo drives
- Application-specific automation
Installation Requirements:
- Per 004090 70 drawing — verify shaft dimensions, connector position, and mounting before installation
- Standard: B5 flange, 4×M6, 12 Nm torque
- Coupling: Clamping hub per shaft spec
Usage Precautions:
- Verify all parameters against 004090 70 datasheet before commissioning
- Do not substitute with standard BM4432-SI1-212 without parameter validation
- Follow all precautions from Record 004
