Cooling Method: Forced Air Cooling (A) — Integral fan-driven cooling for continuous high-power operation.

Shaft Configuration: Keyed Shaft with Radial Shaft Seal (T) — DIN 6885-1 keyway with single radial seal on drive end.

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

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

Frame Size: 280 mm Flange Diameter

Motor Length Code: 24 (Long Length) — Overall length approximately 340–400 mm (excluding shaft).

Rated Torque: Approximately 25–50 Nm

Peak Torque: Up to 3× Rated Torque

Rated Power: Approximately 10–22 kW

Maximum Rated Speed: Up to 3000–4000 rpm

Protection Class: IP54 / IP55 (with forced cooling and shaft seal)

Insulation Class: Class F (155°C)

Ambient Temperature Range: -10°C to +40°C (continuous); up to +50°C with forced cooling.

Housing Material: Aluminum Alloy Die-Cast (ADC12) with Integral Cooling Fins and Fan Shroud

Stator Lamination: 0.35 mm Grain-Oriented Silicon Steel

Rotor Magnets: Sintered NdFeB N42SH / N42UH

Bearings: Deep Groove Ball Bearing (Drive End) + Cylindrical Roller Bearing (Non-Drive End)

Shaft Material: Induction-Hardened C45E (1.0503)

Shaft Diameter: 55 mm or 70 mm

Keyway: DIN 6885-1 Form A

Weight: Approximately 55–85 kg

Moment of Inertia: Approximately 0.080–0.250 kg·m²

Custom Code 42-03311-7012: BAUMÜLLER internal modification identifier — Distinct from 42-0311-7012; encodes specific customer-requested variations in mechanical dimensions, electrical parameters, connector configuration, coating, encoder type, or special features.

Encoder Options: As specified in 42-03311-7012 — typically EnDat 2.2, Hiperface DSL, or BiSS-C absolute encoders

Standards Compliance: EN 60034-1, EN 60034-5, EN 60034-6 (IC 416), EN 61800-5-1, CE, UL, CSA (optional)

Applicable Industries: Same as BM4424-AT1-012 base — Heavy Industry, CNC, Mining, Ship Propulsion, Wind Energy, Steel Mills — with modifications per 42-03311-7012

Key Advantages:

• Identical base performance to BM4424-AT1-012
• Custom code 42-03311-7012 provides specific application optimization distinct from 42-0311-7012
• Forced air cooling ensures continuous rated power in enclosed installations
• 280 mm frame provides high torque for heavy-duty applications
• Large shaft (55/70 mm) enables direct coupling to heavy machinery

Installation Requirements:

• B5 flange mounting — 4× M12/M16 on 280 mm PCD.
• Minimum 300 mm clearance on fan side for airflow.
• Alignment: ≤0.05 mm radial, ≤0.05 mm axial, ≤0.5° angular.
• Verify all 42-03311-7012 modifications against drawing package.

Operating Notes:

• Do not operate without forced cooling fan running.
• Refer to 42-03311-7012 documentation for any modified operating limits.
• Bearing inspection interval: every 4000 operating hours or 12 months.