BAUMÜLLER BM4463-SI0-012 43-03

Digital guide

BAUMÜLLER BM4463-SI0-012 43-03

Model Code Breakdown:

BM4 = Baumüller Servo Motor Series 4
46 = Frame Size 46 (Stator Outer Diameter Approximately 115 mm)
3 = Stack Length Variant 3 (Short Length)
S = Synchronous Servo Motor
I = Incremental Encoder Interface
0 = Standard Winding Variant
012 = Winding Code (Rated Torque Class)
43-03 = Mechanical/Electrical Configuration Code

Detailed content

Technical Specifications:

Parameter	Value
Rated Continuous Torque (M0)	1.2 Nm
Peak Torque (Mmax)	3.6 Nm
Rated Speed (nN)	4500 RPM
Maximum Speed (nmax)	6000 RPM
Rated Power (PN)	0.4 kW
Peak Power (Pmax)	1.2 kW
Rated Voltage (UN)	230 V AC (or 48 V DC depending on winding)
Rated Current (IN)	2.5 A
Peak Current (Imax)	7.5 A
Moment of Inertia (Jrotor)	0.08 kg·cm²
Weight	Approximately 1.8 kg
Protection Class	IP65
Insulation Class	Class F (155°C)

Encoder Specifications:

Type: Incremental Optical Encoder
Resolution: 1280 Pulses Per Revolution (PPR) / 5120 Edges (Quadrature ×4)
Output Signal: HTL (Line Driver), TTL Compatible
Supply Voltage: 5 V DC ±5%
Maximum Frequency Response: 500 kHz

Functional Features:

High Torque Density — Optimized magnetic circuit design for maximum torque per unit volume
Smooth Rotor Construction — Low cogging torque for precise low-speed operation
Low Moment of Inertia — Enables rapid acceleration and deceleration cycles
Integrated Temperature Sensor (PTC/KTY) — Motor winding thermal protection
Balanced Rotor Design — Suitable for high-speed continuous operation
Compact Housing Design — Space-saving integration into machine frames

Structure & Material Composition:

Stator: High-grade Silicon Steel Laminations (Low Iron Loss)
Rotor: Neodymium-Iron-Boron (NdFeB) Permanent Magnets, Grade N42SH
Housing: Aluminum Alloy (Die-Cast), Anodized Surface
Shaft: Hardened Stainless Steel (1.4310 / AISI 303)
Bearings: Deep Groove Ball Bearings (Sealed, Lifetime Lubricated)
Sealing: Double Lip Seal with Labyrinth Design

Working Principle:
The motor operates on the principle of a permanent magnet synchronous machine. The stator windings are energized with three-phase sinusoidal current by the servo drive, generating a rotating magnetic field. The rotor, equipped with NdFeB permanent magnets, synchronously follows the stator field. The incremental encoder provides real-time position and speed feedback to the servo drive, enabling closed-loop vector control (FOC — Field Oriented Control) for precise torque, speed, and position regulation.

Applicable Industries: