Shaft Configuration: Keyed Shaft with Dual Radial Shaft Seals (T) — DIN 6885-1 keyway with radial shaft seals on both drive end and non-drive end for enhanced environmental protection.

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

Pole Configuration: 011 = 1 Pole Pair (2 Poles) — Ultra-high-speed winding rated up to 6000 rpm.

Frame Size: 230 mm Flange Diameter

Motor Length Code: 23 (Medium Length) — Overall length approximately 280 mm (excluding shaft).

Rated Torque: Approximately 8–12 Nm (lower torque, higher speed optimized)

Peak Torque: Up to 3× Rated Torque

Rated Power: Approximately 3–4.5 kW

Maximum Rated Speed: Up to 6000 rpm (2-pole design)

Protection Class: IP65 (dual shaft seals provide superior protection)

Insulation Class: Class F (155°C)

Ambient Temperature Range: -10°C to +40°C (continuous)

Housing Material: Aluminum Alloy Die-Cast (ADC12)

Stator Lamination: 0.35 mm Non-Oriented Silicon Steel — Optimized for high-frequency operation.

Rotor Magnets: Sintered NdFeB N42UH Grade — High-temperature grade for sustained high-speed operation.

Bearings: Precision Angular Contact Ball Bearings (Drive End) + Deep Groove Ball Bearing (Non-Drive End) — Angular contact bearings handle combined radial and axial loads at high speed.

Shaft Material: Induction-Hardened C45E Steel (1.0503)

Shaft Diameter: 42 mm or 55 mm

Keyway: DIN 6885-1 Form A

Weight: Approximately 32–40 kg (heavier due to dual seal configuration)

Moment of Inertia: Approximately 0.012–0.025 kg·m² (low inertia for fast acceleration)

Custom Code 0-02: Internal BAUMÜLLER customer-specific modification identifier — Indicates a particular mechanical or electrical customization applied to the base BM4423-ST1-011 model.

Encoder Options: Incremental (RS422/TTL) or Absolute (EnDat 2.2, Hiperface DSL)

Standards Compliance: EN 60034-1, EN 60034-5, EN 61800-5-1, CE, UL (optional)

Applicable Industries: High-Speed Spindles, CNC Routing, Laser Cutting, High-Speed Pick-and-Place, Centrifuges, Flywheel Energy Storage

Key Advantages:

• 2-pole winding (011) enables maximum speed of 6000 rpm — highest in BM4423 family
• Dual shaft seals (T) provide IP65 protection from both ends — ideal for harsh environments
• Low rotor inertia enables rapid acceleration/deceleration cycles
• Angular contact bearings on drive end support high-speed axial loads
• Custom code 0-02 indicates application-specific optimization

Installation Requirements:

• B5 flange mounting, 4× M10 on 210 mm PCD.
• Ensure dynamic balancing of coupled load (G2.5 / ISO 1940-1).
• Minimum 200 mm radial clearance recommended for high-speed operation.
• Use torsionally stiff coupling (bellows or disc type) for speeds above 4000 rpm.