Arc motor – Infinity™ Series, a direct-drive motor for industrial automation.

Infinity™ Series ARC Segment Torque Motor

The Infinity™ Series ARC Segment Torque Motor delivers smooth, high-precision rotary motion for applications requiring partial arc movement or full 360° rotation. Its modular, ultra-low-profile design enables OEMs to create custom rotary systems with virtually unlimited diameters, making it an ideal solution for robotics, automation, medical equipment, semiconductor systems, and precision motion control.

Unlike conventional rotary motors, the Infinity™ Series uses axial arc-segment forcers that can operate individually or connect seamlessly to form custom arc lengths or complete rotary stages. As a result, engineers gain greater design flexibility while reducing system size and weight.

The motor’s large through-hole design allows cables, pneumatic lines, optics, sensors, and other system components to pass through the center of the motor. Consequently, it simplifies mechanical integration and supports applications that require unobstructed access through the rotary axis.

Designed for high-performance motion control, the Infinity™ Series delivers continuous torque from 0.65 to 63.4 Nm and peak torque up to 190.2 Nm. In addition, its low-profile construction, smooth torque output, and low moving mass provide exceptional positioning accuracy, dynamic response, and efficient operation.

To meet unique application requirements, the Infinity™ Series is available with custom windings and configurable form factors. It also integrates easily with a wide range of industrial servo drives and motion controllers.

Key Features

  • Modular arc-segment direct-drive torque motor
  • Supports partial arc or full 360° rotary motion
  • Ultra-low-profile, lightweight construction
  • Virtually unlimited rotary diameter
  • Large through-hole for cables, optics, and sensors
  • Smooth, high-precision motion
  • High torque density
  • Easy integration into custom machine designs
  • Compatible with leading servo drives and controllers
  • Custom windings and configurations available
  • Maintenance-free direct-drive operation

Technical Specifications

FeatureSpecification
ConfigurationAxial Arc-Segment Forcers
Continuous Torque0.65–63.4 Nm
Peak Torque1.95–190.2 Nm
Outer Diameter112–765 mm
Axial Height20–40 mm
Peak Current3.4–4.5 A

Applications

The Infinity™ Series ARC is ideal for:

  • Industrial robotics
  • Collaborative robots (cobots)
  • Semiconductor equipment
  • Medical imaging systems
  • Precision rotary stages
  • Optical inspection systems
  • Aerospace and defense equipment
  • Industrial automation
  • Custom OEM machinery
  • Arc motion and positioning systems

Flexible Direct-Drive Motion for Custom Rotary Systems

The Infinity™ Series ARC Segment Torque Motor combines modular construction, high torque density, and ultra-smooth direct-drive performance to create custom rotary motion systems with virtually unlimited diameters. Its lightweight design, large through-hole, and flexible arc configuration make it an excellent choice for demanding OEM applications that require precise, reliable, and maintenance-free rotary motion.