Digital guide
You are here:
BAUMÜLLER BM4433-SI1-012 00-03
Model Series: BM44 Series — Large-Frame Synchronous Servo Motor (Version 00-03)
Product Introduction:
The BM4433-SI1-012 00-03 is a version 00-03 revision of the BM4433-SI1-012 large-frame synchronous servo motor. It features a smooth shaft, natural convection cooling, and a single-turn absolute encoder. The 00-03 version code indicates updated parameters, potentially including revised winding data, updated encoder firmware, or modified mechanical tolerances per Baumüller’s revision control system.
Detailed content
Type Designation Breakdown:
- BM44 — BM44 Series Servo Motor
- 33 — Frame Size 33 (outer diameter 180 mm)
- S — Synchronous Servo Motor
- I — Smooth Shaft (No Keyway), Natural Convection Cooling
- 1 — Single-Turn Absolute Encoder
- 012 — Winding/Configuration Code
- 00-03 — Version/Revision Code (Revision 3 of base design)
Technical Specifications:
| Parameter | Value |
|---|---|
| Frame Size | 33 |
| Stator Outer Diameter | 180 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 / 16,384 counts/rev) |
| Rated Torque (M0) | 1.8 Nm |
| Maximum Torque (Mmax) | 5.4 Nm |
| Rated Speed (nN) | 2500 rpm |
| Maximum Speed (nmax) | 4500 rpm |
| Rated Power (PN) | 0.47 kW (continuous) |
| Peak Power | 1.41 kW |
| Rated Voltage (UN) | 400 V AC (three-phase) |
| Rated Current (IN) | 1.4 A |
| Phase Resistance (R) | 2.0 Ω (20°C) |
| Phase Inductance (L) | 6.0 mH |
| Moment of Inertia (Jm) | 0.00080 kg·m² (800 g·cm²) |
| Protection Class | IP65 (with connector) |
| Insulation Class | F (155°C) |
| Ambient Temperature Range | -10°C to +40°C |
| Weight | Approximately 7.5 kg |
| Connector Type | M23 x 12-pin (power + encoder) |
| Version | 00-03 (Revision 3) |
Functional Features:
- Identical core specs to BM4433-SI1-012 with version 00-03 updates
- Single-turn absolute encoder (14-bit, 16,384 counts/rev) — high-resolution position feedback
- Smooth shaft — clamping hub coupling, zero backlash
- Natural convection cooling — silent, maintenance-free
- Revision 00-03 may include: updated encoder communication protocol, revised thermal model parameters, or improved bearing specification
Structural Characteristics:
- Housing: Aluminum alloy die-cast, anodized — revision 00-03 may specify updated surface treatment
- Stator: 0.35 mm grain-oriented silicon steel, epoxy-coated
- Rotor: NdFeB permanent magnet, 4-pole, insulated retention sleeve
- Bearings: Sealed precision ball bearings, L10 ≥ 35,000 hours (revision 00-03 may specify upgraded bearing grade)
- Shaft: C45 steel, Ø35 mm smooth, Ra 0.4 µm, length 60 mm
Working Principle:
Standard synchronous servo motor operation. Three-phase sinusoidal commutation from servo drive. NdFeB rotor follows stator field synchronously. Single-turn absolute encoder provides 14-bit position feedback. Servo drive executes closed-loop control at >1.2 kHz bandwidth. Version 00-03 parameters are loaded during drive commissioning.
Advantages & Highlights:
- Same as BM4433-SI1-012 with latest revision improvements
- Revision 00-03 ensures compatibility with latest Baumüller servo drive firmware
- Highest torque BM433 naturally-cooled motor (1.8 Nm continuous)
- Single-turn absolute at 16,384 counts/rev — finest resolution in class
Applicable Industries:
- Same as BM4433-SI1-012 (Records 008/009)
- Applications requiring latest revision compliance
Installation Requirements:
- Same as BM4433-SI1-012 (Record 009)
- Verify version 00-03 parameters in drive commissioning tool
- B5 flange, 4×M8, 18 Nm torque
- Clamping hub, Ø35 mm H7
Usage Precautions:
- Same as BM4433-SI1-012 (Record 009)
- Use revision 00-03 motor data file in Baumüller drive parameterization — do not use older version data
- Maximum torque: 5.4 Nm peak (3 sec max)
- Shaft loads: radial ≤300 N, axial ≤120 N
