Shaft Configuration: Keyed Shaft with Dual Radial Shaft Seals (T)

Electrical Connection: Rotatable Connector (1) — M23, 360° rotation.

Pole Configuration: 012 = 2 Pole Pairs (4 Poles)

Frame Size: 230 mm Flange Diameter

Motor Length Code: 23 (Medium Length) — Approximately 280 mm overall length.

Rated Torque: Approximately 12–20 Nm (same base as BM4423-ST1-012)

Peak Torque: Up to 3× Rated Torque

Rated Power: Approximately 4–7 kW

Maximum Rated Speed: Up to 4500 rpm

Protection Class: IP65 (dual shaft seals)

Insulation Class: Class F (155°C)

Ambient Temperature Range: -10°C to +40°C

Housing Material: Aluminum Alloy Die-Cast (ADC12)

Stator Lamination: 0.35 mm Grain-Oriented Silicon Steel

Rotor Magnets: Sintered NdFeB N42SH

Bearings: Deep Groove Ball Bearings (C3 Clearance, Both Ends)

Shaft Material: Induction-Hardened C45E (1.0503)

Shaft Diameter: 42 mm or 55 mm

Keyway: DIN 6885-1 Form A

Weight: Approximately 33–42 kg

Moment of Inertia: Approximately 0.020–0.045 kg·m²

Custom Code 42-03: BAUMÜLLER internal modification identifier — Specifies particular customer-requested changes to the base BM4423-ST1-012 model (mechanical dimension, winding adjustment, connector type, or special coating).

Encoder Options: Standard incremental or absolute encoders per customer specification in 42-03 code.

Standards Compliance: EN 60034-1, EN 60034-5, EN 61800-5-1, CE

Applicable Industries: Same as BM4423-ST1-012 with application-specific modifications per 42-03 code — typically CNC, Packaging, Printing, Material Handling

Key Advantages:

• Retains all advantages of BM4423-ST1-012 base model
• Custom code 42-03 provides application-tailored optimization
• Dual shaft seals ensure IP65 in demanding environments
• 4-pole winding for balanced speed-torque performance

Installation Requirements:

• Identical to BM4423-ST1-012 — B5 flange, 4× M10, 210 mm PCD.
• Verify custom modifications per 42-03 drawing before installation.
• Ensure coupling matches any modified shaft dimensions specified in 42-03.