Reliance 5BC42AB2131C

Technical Specifications:

• Motor Type: Brushed permanent magnet DC servo motor
• Frame Series: BC‑series industrial servo frame
• Feedback Device: Integrated incremental position‑velocity encoder
• Insulation Class: Class F
• Ambient Operating Temperature: −20 °C to +40 °C Functional Features:
• Excellent dynamic acceleration performance for rapid axis movement
• Shaft‑mount incremental encoder for closed‑loop feedback
• Brushed commutation compatible with traditional DC servo drives
• High‑strength output shaft for coupling connection
• Embedded thermal sensor for winding over‑temperature protection Application Scenarios:
• Maintenance retrofit for old metal‑working machine tools
• Web‑handling converting production lines
• Printing press motion axes
• Automatic material positioning equipment
• Spare‑part replacement for existing Reliance servo systems Performance Parameters:
• Rated base speed and maximum allowable mechanical speed
• Continuous stall torque and peak overload torque
• Defined rotor inertia for motion loop tuning
• Fixed feedback encoder resolution Material Composition:
• Motor housing: Cast aluminum alloy
• Rotor assembly: High‑energy permanent magnet
• Stator part: Silicon‑steel laminated core with copper winding wire
• Output shaft: High‑strength carbon steel
• Brush assembly: Graphite‑carbon service brushes Structural Characteristics:
• Standard NEMA‑style flange and shaft dimension
• Rear housing for feedback encoder installation
• Side terminal box for power winding and thermal‑sensor wiring
• Dual‑bearing support structure for output shaft Working Principle: Permanent‑magnet stator provides stable magnetic field. Controlled DC current flows through rotor armature winding and generates electromagnetic torque to drive shaft rotation. Rear‑mount encoder outputs pulse signal, feeds back shaft position and rotation speed to servo drive for closed‑loop adjustment. Installation Requirements:
• Fasten motor flange onto rigid machine base
• Adopt flexible shaft coupling to avoid radial and axial shaft load
• Guarantee coupling concentricity comply with mechanical specification
• Separate power cable and feedback cable according EMC standard
• Maintain natural convection air flow around motor housing for heat dissipation Usage Precautions:
• Periodically inspect brush wear status, replace brushes at service cycle
• Never exceed motor peak torque and maximum mechanical speed limit
• Prevent liquid, dust and metal debris entering motor enclosure
• Verify encoder wiring polarity during commissioning to avoid axis runaway
• Keep thermal‑sensor circuit normally connected for winding overheat protection