Stepper motor 86BH181RS125IM

18 V70 Vhigh-torque

Product Overview
The 86BH181RS125IM is the highest-torque 86 mm RS485 integrated stepper servo in the supplied group. Its 12 N·m maximum output torque, battery-free multi-turn feedback and integrated construction support demanding transfer, robot-arm and industrial automation axes where position recovery and simplified wiring are valuable.

Key Highlights

• 12 N·m maximum output torque
• RS485 communication
• Battery-free multi-turn feedback: -100 to +1499 turns (1,599-turn range)
• 18–70 VAC input and integrated drive/encoder architecture

Quick Specs
Frame Size: 86 mm
Body Length: 180.6 mm
Max Output Torque: 12 N·m
Input Voltage: 18–70 VAC
Communication: RS485
Encoder Feedback: 4096 lines (16,384 counts)

Integrated Servo Overview (Parameters)
Model No.: 86BH181RS125IM
Frame Size: 86 mm (NEMA 34)
Integrated Body Length: 180.6 mm
L Size: 156.1 mm
Shaft Diameter: 14 mm
Input Voltage Range: 18–70 VAC
Maximum Output Torque: 12 N·m

Electrical, Feedback & Configuration (Parameters)
Current Setting: 0.2–3.2 A software-adjustable; factory-matched motor: 6.0 A
Encoder Feedback: 4096 lines (16,384 counts)
Phase Resistance: 0.79 Ω ±20%
Phase Inductance: 8.2 mH ±20%
Rotor Inertia: Approx. 5400 g·cm²
Weight: Approx. 5.5 kg
Microstep Setting: Host configurable; 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
Non-volatile Storage: Configuration parameters stored in internal MCU FLASH
Operating Temperature: 0°C to +40°C
Operating Humidity: 20% RH to 90% RH

Characteristics / Spécifications techniques

• Model: 86BH181RS125IM
• Brand: NEOTON MOTOR
• Frame size: 86 mm (NEMA 34)
• Integrated body length: 180.6 mm
• L size: 156.1 mm
• Shaft diameter: 14 mm
• Maximum output torque: 12 N·m
• Input voltage range: 18–70 VAC
• Communication interface: RS485
• Encoder feedback: 4096 lines (16,384 counts)
• Multi-turn feedback: battery-free, fixed range -100 to +1499 turns (1,599-turn)
• Phase resistance: 0.79 Ω ±20%
• Phase inductance: 8.2 mH ±20%
• Rotor inertia: approx. 5400 g·cm²
• Weight: approx. 5.5 kg
• Current setting: 0.2–3.2 A software-adjustable; factory-matched motor: 6.0 A
• Microstep setting: host-configurable; positive integer above 200; default 4000
• Address setting: factory default 1; adjustable by host software
• Protections: over-voltage, under-voltage, over-current, winding open circuit, position deviation
• Non-volatile storage: parameters stored in internal MCU FLASH
• Operating temperature: 0°C to +40°C
• Operating humidity: 20% to 90% RH