Bosch Rexroth MSK040C-0600-NN-M1-UG1-NNNN

Technical Core Specifications

• Rated Power: 750W
• Stall Torque: 2.7 Nm
• Peak Instantaneous Torque: 8.1 Nm
• Rated Speed: 6000 rpm; Max Mechanical Speed: 7500 rpm
• Shaft Diameter: 14 mm plain smooth shaft, no keyway
• Overall Dimensions: 185.5 mm (L) × 124.5 mm (W) × 82 mm (H)
• Net Mass: 3.6 kg
• Encoder Configuration: Multi-turn absolute Hiperface optical encoder, 128 signal periods per rotation, 17-bit position resolution
• Cooling Mode: Natural convection air cooling, no integrated fan
• Holding Brake: None (NN suffix denotes brake-less design)
• Protection Class: IP65 for motor housing and shaft seal; IP54 for connector ports
• Operating Voltage: 3-phase AC servo bus voltage matched to IndraDrive M/H drives (200–480V)
• Operating Ambient Temp: 0°C ~ +40°C continuous; -20°C startup minimum
• Vibration Resistance: Vibration grade R per IEC 60034-14

Functional Features

1. Ultra-low inertia rotor design cuts positioning settling time to sub-millisecond range
2. Multi-turn absolute encoder retains full position data after complete power loss, eliminates homing requirement on system restart
3. Rotatable 240° dual connector housing (power + feedback cable) for flexible wiring layout in compact machine enclosures
4. Minimal torque ripple (<1.5%) ensures ultra-smooth linear and rotary movement without mechanical jitter
5. Standard flat flange mounting pattern compatible with global servo mechanical adapter kits
6. Over-temperature thermal sensor embedded in stator winding for real-time drive overheat protection
7. CE, UL, RoHS industrial compliance certification

Material & Structural Composition

• Motor Housing: Die-cast aluminum alloy with black anti-corrosion powder coating, optimized rib structure for passive heat dissipation
• Rotor & Stator: High-grade silicon steel lamination stack + rare earth neodymium permanent magnets; copper insulated winding with class F thermal insulation
• Shaft: High-tensile carbon steel, precision ground surface with fluorine rubber shaft oil seal
• Terminal Connectors: Glass-filled nylon reinforced industrial circular plugs with locking screw fasteners
• Mounting Flange: Machined aluminum alloy with four symmetrical mounting through-holes

Working Principle

Installation Requirements

1. Mount vertically or horizontally only; avoid upside-down installation to prevent condensed water accumulation inside the connector cavity
2. Maintain minimum 50mm free air clearance around motor housing for passive heat exchange
3. Shaft coupling radial runout must be controlled within ≤0.01 mm to avoid bearing premature wear
4. Use only Rexroth certified shielded servo power and encoder cables to eliminate electromagnetic interference
5. Torque mounting flange bolts to 8 Nm standardized tension; do not over-tighten aluminum flange
6. Cable bend radius must exceed 10× cable outer diameter at all wiring points

Application Scenarios

Operation & Maintenance Notes

1. Forbid operation beyond 110% of continuous stall torque over long durations to prevent permanent magnet demagnetization
2. Regularly inspect shaft oil seal for oil leakage in high-humidity or cutting fluid splash environments
3. Do not disassemble encoder rear housing without professional calibration tools; encoder misalignment causes permanent positioning deviation
4. Avoid exposure to conductive metal dust, corrosive acid/alkaline vapor, and direct high-pressure water washing
5. Conduct annual bearing lubrication maintenance for continuous 24/7 production operation
6. Disconnect all power cables before mechanical disassembly to eliminate accidental rotation hazards