AC motor 86BH103RS45IM

stepper70 VNEMA 34

Product Overview
The 86BH103RS45IM is an 86 mm integrated stepper servo with RS485 communication and battery-free mechanical multi-turn absolute feedback. Position retention after power loss enables simplified reduced-homing machine architectures where allowed by system safety, making it suitable for heavy-duty transfer, inspection and automation fixtures.

KEY HIGHLIGHTS

• 18–70 VAC input and 4.5 N·m maximum output torque
• RS485 communication interface
• Battery-free multi-turn absolute feedback: -100 to +1499 turns (1,599-turn range)
• 4096-line / 16,384-count encoder feedback
• Integrated architecture reduces wiring and simplifies system integration

Quick Specifications

• Frame Size: 86 mm
• Body Length: 102.6 mm
• Max Output Torque: 4.5 N·m
• Input Voltage: 18–70 VAC
• Communication: RS485
• Encoder Feedback: 4096 lines (16,384 counts)

Integrated Servo Overview — Table
Model No.: 86BH103RS45IM
Frame Size: 86 mm (NEMA 34)
Integrated Body Length: 102.6 mm
L Size: 78.1 mm
Shaft Diameter: 14 mm
Input Voltage Range: 18–70 VAC
Maximum Output Torque: 4.5 N·m
Communication: RS485

Electrical, Feedback & Configuration — Table
Current Setting: 0.2–3.2 A software adjustable; factory-matched motor: 6.0 A
Encoder Feedback: 4096 lines (16,384 counts) encoder feedback
Phase Resistance: 0.37 Ω ±20%
Phase Inductance: 2.8 mH ±20%
Rotor Inertia: Approx. 1800 g·cm²
Weight: Approx. 2.2 kg
Microstep Setting: Host configuration; positive integer above 200; factory default 4000
Address Setting: Factory default 1; start address adjustable by host software
Multi-turn Feedback: 1,599-turn battery-free multi-turn feedback; fixed range -100 to +1499 turns
Protection: Over-voltage, under-voltage, over-current, winding open circuit and position deviation detection
Non-volatile Storage: Configuration parameters stored in internal MCU FLASH
Operating Temperature: 0°C to +40°C
Operating Humidity: 20% RH to 90% RH

Technical specifications

• Model No.: 86BH103RS45IM
• Frame Size: 86 mm (NEMA 34)
• Integrated Body Length: 102.6 mm
• L Size: 78.1 mm
• Shaft Diameter: 14 mm
• Input Voltage Range: 18–70 VAC
• Maximum Output Torque: 4.5 N·m
• Communication Interface: RS485
• Encoder Feedback: 4096 lines (16,384 counts)
• Multi-turn Feedback Range: -100 to +1499 turns (1,599-turn battery-free)
• Current Setting: 0.2–3.2 A software adjustable; factory-matched motor: 6.0 A
• Phase Resistance: 0.37 Ω ±20%
• Phase Inductance: 2.8 mH ±20%
• Rotor Inertia: Approx. 1800 g·cm²
• Weight: Approx. 2.2 kg
• Microstep Setting: Host-configurable; default 4000
• Address Setting: Factory default 1; adjustable by host software
• Protection Features: Over-voltage, under-voltage, over-current, winding open circuit, position deviation detection
• Non-volatile Storage: Internal MCU FLASH for configuration
• Operating Temperature: 0°C to +40°C
• Operating Humidity: 20% RH to 90% RH