Direct Drive Frameless Motors

Applimotion, Inc. Direct Drive Frameless Motors

Applimotion, Inc. manufactures a full family of Direct Drive Frameless Motors– permanent magnet three phase ring type, low profile, direct drive motors with large through hole, and Linear and Linear Arc (ARC) Motor Solutions– application specific air core linear motor kits for high precision high response systems.  Models include:

Direct Drive Frameless Motors permanent magnent three phase ring type, low profile, direct drive motors with large through hole.direct drive frameless motor

Four types to choose from:

  • ULT Series: easy to use general purpose motors from 45-165 diameters
  • UTH Series: high output motors from 29-533 mm diameters
  • UTS Series: slotless motors for the smoothest motion 29-240 mm diameters
  • UTO Series: outside rotating motors for hub-centeric applications 20-200mm diameters

Linear and Linear Arc (ARC) Motor Solutions: applciation specific air core linear motor kits for high precision high response systems. direct drive frameless motor

Three types to choose from:

  • LIN Series: traditional air core linear motors, single or double sided designs
  • ARC Series: arc shaped single sided linear motors for large diameter low profile limited angle or full rotating
  • LAC Series: linear single phase motors for actuation

Kollmorgen Direct Drive Frameless Motors

The KBM™ Series, from Kollmorgen, is designed to be directly embedded in your machine, using the machine's own bearings to support the rotor. With a huge selection of standard motors—plus our ability to quickly and cost-effectively incorporate co-engineered modifications—you can choose an exact-fit motor that provides the highest performance in the most compact space.

kollmorgen direct drive frameless motor

The KBM™ series offers high performance, long life and simple installation in a motor kit that can be embedded directly in your machine design. 

Benefits of Frameless Motors include:

  • Direct load connection eliminates maintenance of gearboxes, belts or pulleys
  • Zero backlash and compliance provides more responsive system performance
  • Eliminates coupling devices, reducing overall machine size
  • Embedded motor enables compact machine design, helps protect your intellectual property
  • Huge selection of standard motors and co-engineered modifications for an exact fit, without the time, expense and risk of a fully customized motor

Kollmorgen's family of Frameless Motors includes:

KBM Series Frameless Series

The KBM™ series offers high performance, long life and simple installation in a motor kit that can be embedded directly in your machine design.  Features include:

kollmorgen direct drive frameless motor

  • Fully encapsulated stator windings
  • 155°C internal winding temperature continuous capability
  • PTC thermistor (avalanche-type) overload protection
  • Rare-earth neodymium iron boron magnets
  • Fail-safe bands over rotor magnets
  • RoHS compliant
  • UL and CE agency facilitation
  • Optimizations include rotor hub dimensions, stack length, diameter, mounting features, windings, insulation, connection type and much more
  • Optional latching digital Hall effect sensors are pre-aligned and factory-installed with added axial rotor length to achieve proper triggering

TBM(S) Series Frameless Series 

The TBM frameless motor is a new series of direct drive torque motors designed for applications that require high power in a small compact form factor with minimized weight, and inertia.  Typical applications include robotic joints, weapon stations, sensor gimbals, sight systems, UAV propulsion and guidance, as well as many others.  Features include: 

kollmorgen direct drive frameless motor

  • 3 frame sizes ranging from 60mm (2.36 inches) up to 129mm (5.08 inches)
  • 3 stacks lengths per frame
  • 2 standard winding options per frame
  • Latching Hall Effects (pre-aligned / factory installed).
  • Low Cogging designs
  • Stainless Steel Yokes for max corrosion protection
  • RoHS Compliant
  • Banded Rotors
  • Laser Marked Armatures

ITT Torque Systems Direct Drive Frameless Motors

MDM-5000 Direct Drive Sets (Frameless Motors Kit Versions), from ITT Torque Systems, have been developed to fit applications where size and weight are important factors. Direct Drive technology allows for high servo stiffness which maximizes rate and position accuracy because there are no belts, gears or backlash inherent with most other servo systems. MDM-5000 Direct Drive Sets are supplied as two pieces; a cut-core segmented stator and a rotor. The stator is molded in a thin walled aluminum housing using thermally conductive epoxy, which provides excellent heat transfer and protects the windings (and optional integrated Hall board) from damage during installation and handling. The rotor is coated with a polymer shrink wrap which protects the magnets from dislodging during operation and also prevents damage while handling.  Features include:

itt torque system frameless motor

  • Brushless design provides high performance with zero maintenance
  • High efficiency, excellent heat transfer, high torque density
  • Rotor coated with polymer shrink wrap which protects magnets from dislodging during operation and prevents accidental damage while handling
  • High pole count, low cogging, smooth operation
  • High torque to inertia ratio ideal for high acceleration/deceleration mode with rapid start-stop
  • Low electrical time constant for fast response

itt frameless motor selection chart

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