Cooling Method: Natural Convection (S) — Self-cooling, no auxiliary fan.

Shaft Configuration: Keyed Shaft with Dual Radial Shaft Seals (T) — DIN 6885-1 keyway with seals on both shaft ends.

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

Pole Configuration: 016 = 6 Pole Pairs (12 Poles) — Ultra-high torque, low-speed winding.

Frame Size: 230 mm Flange Diameter

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

Rated Torque: Approximately 20–35 Nm (highest torque in BM4423 family)

Peak Torque: Up to 3× Rated Torque

Rated Power: Approximately 3–5 kW (lower speed reduces power despite high torque)

Maximum Rated Speed: Up to 1000 rpm (12-pole design)

Protection Class: IP65 (dual shaft seals)

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 low-speed, high-torque operation with minimal cogging.

Rotor Magnets: Sintered NdFeB N42UH Grade — High-coercivity grade for stability at low speeds.

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

Shaft Material: Induction-Hardened C45E (1.0503)

Shaft Diameter: 55 mm or 70 mm (larger shaft for high torque transmission)

Keyway: DIN 6885-1 Form A — 18×11 mm (55 mm shaft) / 22×14 mm (70 mm shaft)

Weight: Approximately 38–50 kg (heaviest in BM4423 series due to high torque design)

Moment of Inertia: Approximately 0.050–0.120 kg·m² (high inertia for smooth low-speed operation)

Encoder Options: High-Resolution Incremental (up to 16384 lines/rev) or Absolute (EnDat 2.2, Hiperface DSL, BiSS-C) — Critical for low-speed position accuracy.

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

Applicable Industries: Direct-Drive Rotary Tables, Heavy-Duty Turrets, Wind Turbine Pitch Control, Large Valve Actuators, Ship Propulsion Auxiliaries, Mining Equipment, Steel Mill Rotary Tables

Key Advantages:

• 12-pole winding (016) delivers maximum torque at minimum speed — eliminates need for gearbox in many applications
• Dual shaft seals (T) — IP65 protection on both ends for harsh industrial environments
• Low cogging torque design enables ultra-smooth low-speed rotation
• High moment of inertia provides inherent speed stability under load fluctuations
• Direct-drive capable — removes gearbox backlash, maintenance, and efficiency losses

Installation Requirements:

• B5 flange mounting — 4× M10 or 4× M12 (depending on torque rating) on 210 mm PCD.
• Minimum 200 mm radial clearance for natural convection cooling.
• Rigid coupling only — no flexible couplings recommended for direct-drive applications (torsional stiffness critical).
• Alignment: ≤0.03 mm radial runout, ≤0.03 mm axial runout, ≤0.5° angular misalignment.