REXROTH MSK040C-0600-NN-M1-UG1-NNNN R911306061

Core Technical Performance Parameters

• Frame Size: 040 square flange mounting
• Stator Stack Length: C (185.5 mm overall motor length)
• Winding Code: 0600 (max rated speed 7500 RPM)
• Cooling Type: NN = Natural convection air cooling, no fan
• Continuous Standstill Torque (100 K): 3.1 N·m
• Peak Maximum Torque: 8.1 N·m
• Continuous Standstill Current: 4.7 A RMS
• Peak Dynamic Current: 12.4 A RMS
• Holding Brake Specification: M1 = Electrically released brake, holding torque 4 N·m
• Encoder Configuration: UG1 = Multi-turn absolute optical Hiperface encoder, 128 signal periods, 240° rotatable connector
• Shaft Form: Plain smooth shaft without keyway
• Protection Class: IP64 motor housing, IP65 connector sockets
• Operating Temperature Range: -20 °C to +40 °C ambient
• Storage Temperature: -30 °C to +85 °C
• Vibration Compliance: IEC 60068-2-6, shock resistance IEC 60068-2-27
• Net Weight: 3.6 kg
• Flange Mount Dimension: Standard square 4-hole mounting flange

Function & Feature Highlights

1. Rare earth permanent magnet rotor design, ultra-low torque ripple for ultra-smooth low-speed operation
2. Multi-turn absolute encoder eliminates home homing procedure after power cycle, retains full position data without backup battery
3. Integrated spring-applied electric holding brake locks shaft securely when power cut, prevents axis sliding in vertical load applications
4. Rotatable 240° power and encoder connector for flexible cabinet wiring layout
5. Class F high-temperature resistant stator winding insulation, withstands long-term continuous full-load operation
6. Sealed shaft lip seal prevents dust, cutting fluid and oil ingress into motor bearing chamber
7. CE, UL, CSA safety certified for global industrial automation deployment
8. Zero brush wear structure, long service life with minimal maintenance

Working Principle

1. Three-phase alternating current from servo drive generates rotating magnetic field inside stator winding.
2. Permanent magnet rotor follows rotating magnetic field synchronously to produce continuous rotary torque.
3. Hiperface optical encoder continuously captures real-time rotor position and speed signal, feeds back digital position data to servo drive for closed-loop vector control.
4. Holding brake spring presses friction disc onto rotor shaft when brake coil de-energized; 24 V DC brake supply releases friction disc to allow free rotation during motor operation.
5. Servo drive executes current, speed, position three-loop cascade control based on encoder feedback to realize precise positioning and speed regulation.

Material & Structural Composition

• Motor Housing: Die-cast aluminum alloy with black anti-corrosion powder coating, integrated heat dissipation rib structure
• Stator Core: Laminated silicon steel sheet, Class F insulated copper magnet wire winding
• Rotor: High-energy neodymium iron boron permanent magnet, high-strength steel rotor shaft
• Bearing: Double sealed high-precision deep groove ball bearing with long-life lithium grease lubrication
• Brake Assembly: Steel friction disc, compression return spring, electromagnetic coil housing
• Encoder Housing: Die-cast aluminum alloy, anti-shock rubber shock absorber buffer
• Connector Shell: Glass fiber reinforced PA plastic, gold-plated multi-pin contact terminals

Installation Requirements

1. Flange mounting via four M6 mounting bolts, torque tighten to 8 N·m uniform value to avoid flange deformation
2. Shaft radial and axial load must stay within motor specification limit; external gearbox or coupling must adopt elastic damping coupling to absorb shock load
3. Natural convection cooling requires unobstructed air circulation around motor housing; minimum 50 mm clearance on all sides
4. Motor cable must use dedicated shielded servo power cable and encoder cable, separate wiring routing to avoid electromagnetic interference
5. Brake power supply must be independent 24 V DC stabilized power source, do not share power with drive control circuit
6. Vertical installation of motor with downward shaft direction requires additional mechanical safety locking device besides internal brake

Application Scenarios

• Precision CNC cutting machine feed axes
• Electronic semiconductor equipment pick-and-place robotic arms
• Packaging machinery high-speed indexing and positioning axes
• Textile machinery high-speed winding and unwinding control
• Automated assembly lines multi-axis coordinated motion
• Printing press registration and tension control axes

Operation & Maintenance Precautions

1. Strictly prohibit exceeding 7500 RPM maximum speed for long-term continuous operation, will accelerate bearing wear and demagnetize permanent magnet
2. Brake coil shall not be continuously energized over 30 minutes under static holding state, will cause overheating burnout
3. Do not expose motor to direct splashing of cutting oil, coolant or chemical solvent without additional protective shroud
4. Avoid sudden full load forward/reverse rotation frequent jogging operation, peak torque impact will reduce bearing service life
5. Encoder connector must be fully locked and sealed; loose connector will cause position loss and machine collision fault
6. Conduct bearing grease replacement every 20,000 working hours under continuous heavy-duty operation