II. Function and Position

Core Function: Main shaft drive of CNC machine tools, high-power cutting, high rotational speed / high torque, continuous operation, master-slave synchronous control

Position: Heavy-duty industrial-grade servo main shaft motor, targeted at high-end machining centers, turning-milling composite, large-scale mold machine tools, emphasizing high power, high rigidity, long lifespan, continuous S1 operation

Features: Independent axial air cooling, IP65 protection, F-class insulation, built-in PTC/NTC temperature measurement, brushless design, compatible with Rexroth IndraDrive series drives

III. Core Performance Parameters (Standard Values)

Rated Power: 20.9 kW (S1 continuous)

Rated Torque: 100 Nm

Rated Current: 49 A

Rated Speed: 3500 rpm

Maximum Speed: 7500 rpm

Voltage Level: 400 V / 480 V (three-phase)

Cooling Method: Independent axial fan (IP24, separate power supply)

Feedback System: DS0H = Digital servo encoder (high resolution)

Installation Method: Flange installation (IM B5)

Shaft End: Optical shaft, no keyway, no brake

Protection Grade: IP65 (stator / shaft seal)

Insulation Grade: F class

Operating Environment: 0 ℃～+40 ℃

Noise: ≤75 dB(A)

IV. General Adaptable Accessories

Servo Drive: Rexroth IndraDrive M/H series (e.g. HMD01.1-W030N)

Power Cable: 4-core shielded servo power line (16 mm²)

Feedback Cable: Rexroth dedicated DS0H encoder shielded line

Cooling Fan: Original axial fan (separate 230 V/400 V power supply)

Installation Accessories: Flange gasket, locating pin, high-strength bolt, sealing kit

Optional Accessories: External brake, encoder upgrade, water cooling modification kit

V. Applicable Equipment Domains

CNC Machine Tools: Large processing centers, CNC lathes, turning-milling composite, gantry machines, high-speed drilling and tapping centers

Mold Manufacturing: Large injection molds, stamping molds, automotive body mold processing

Aerospace: Structural parts, titanium alloys, aluminum alloys high-speed / heavy-load cutting

General Machinery: High-torque main shaft unit, multi-axis linkage equipment, heavy-duty wood / stone cutting

Industrial Automation: High-power main drive, continuous operation production line, test equipment main shaft