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TBM Series

The Kollmorgen TBM (Torquer Brushless Motor) Series direct drive frameless motor is designed to be directly embedded in your machine, using the machine’s own bearings to support the rotor. This series is designed for applications that require high power in a small, compact form factor with minimized weight and inertia. With a 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 robotic joints, medical robotics, sensor gimbals, guidance systems and other motion-critical applications.

Product available worldwide
TBM (Torquer Brushless Motor) Series direct drive frameless motor
TBM Rotor
TBM Stator Family



  • Multiple frame sizes ranging from 60 mm (2.36 inches) up to 129 mm (5.08 inches) OD
  • 24/48/96 VDC standard optimized windings
  • Low Cogging Designs
  • 155°C internal winding temperature continuous capability
  • Stainless steel rotors for corrosion protection
  • Banded Rotors
  • Laser Marked Armatures
  • RoHS Compliant
  • CE compliant at Rated Voltage


  • Custom windings
  • Latching hall effects (pre-aligned and factory installed)
  • Modify any standard product’s characteristics – mechanical dimensions, electrical options and connections, thermal and winding optimization for acceleration or deceleration, torque, speed, power, smoothness, and more – to meet your specific needs.


Frame Size TBM(s)60 TBM(s)76 TBM(s)129
Outside Diameter (in) 60.35mm (2.37 in) 75.97mm (2.99 in) 128.93mm (5.08 in)
Through Bore (in) 28.70mm (1.13 in) 36.07mm (1.42 in) 55.88mm (2.20 in)
Continuous Stall Torque .41 - 1.16 Nm .99 - 2.39 Nm 3.12 - 10.3 Nm
Peak Stall Torque 1.37 - 4.53 Nm 2.86 - 6.89 Nm 8.07 - 39.4 Nm
Standard Stack Lengths
Stator Dim “A”
12.70 mm (0.500 in)
25.40 mm (1.000 in)
50.80 mm (2.000 in)
15.24 mm (0.600 in)
30.73 mm (1.210 in)
46.23 mm (1.920 in)
13.33 mm (0.525 in)
41.28 mm (1.625 in)
54.61 mm (2.150 in)
Rated Bus Voltage (VDC) 48 VDC 48 VDC 100 VDC
Max Stall Tc
Nm (oz-in or lb-ft)
1.15 Nm (163 oz-in) 2.33 Nm (330 oz-in) 10.3 Nm (7.60 lb-ft)
Max Tp
Nm (oz-in or lb-ft)
5.00 Nm (708 oz-in) 6.74 Nm (955 oz-in) 36.2 Nm (26.7 lb-ft)
Max Rated N 4300 RPM 4025 RPM 2700 RPM

Design Tools

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Count on Kollmorgen support to help you design and build a successful machine and keep it reliably productive, anywhere in the world. Our co-engineering experts will work with you to tailor a perfect-fit solution for your motion requirements.

Talk to a motion expert
Title Language(s) Date Size
Kollmorgen Automation and Motion Control English 06 Nov 2019 15.76 MB Copy URL
Kollmorgen Automation Solutions and Product Catalog EMEA English 21 Jun 2018 15.99 MB Copy URL
Kollmorgen Automation Suite (KAS) Catalog English 01 Dec 2017 14.02 MB Copy URL
Kollmorgen Optimized Solutions and Special Duty Motors English 01 Jan 2018 1.26 MB Copy URL
Kollmorgen TBM Frameless Motor Selection Guide English 01 Jan 2018 1.62 MB Copy URL
Title Language(s) Date Size
Kollmorgen Motion Components Brochure EN RevB English 14 Oct 2011 1.81 MB Copy URL
Kollmorgen Robotic Solutions Brochure EMEA English 23 May 2018 2.56 MB Copy URL
Robotic Solutions Brochure English 17 Apr 2018 3.06 MB Copy URL

These 3D models are intended to guide your design activities and may be used as reference information. Be sure to consult a Kollmorgen expert to ensure you have the most current and accurate information for critical aspects of design work

Title Language(s) Date Size
2D/3D Models for All TBM Series English 13 Sep 2018 Copy URL
pdfTBM-129XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 99.55 KB Copy URL
pdfTBM-60XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 289.18 KB Copy URL
pdfTBM-76XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 292.64 KB Copy URL
pdfTBMS-129XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 193.08 KB Copy URL
pdfTBMS-60XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 355.7 KB Copy URL
pdfTBMS-76XX-X00 Direct Drive Frameless 2D Drawing English 30 Oct 2019 359.79 KB Copy URL
Mounting, Design, and Installation of Frameless Motors (KBM, TBM) After the motor and winding designation have been selected, the motor design should be incorporated in the layout phase of the mechanical design. A frameless brushless type motor may be either...
KBM(S) and TBM(S) Minimum Ambient Operating Temperature The minimum ambient operating temperature, for the KBM, KBMS, TBM, and TBMS series motors is -40 degrees C.
Standards and Directives [toc] General Structures of standards with EN ISO 12100 as an example ISO Standards Safety of Machinery — General Principles for Design ISO 12100:2010 UL Standards...
Conflict Minerals Kollmorgen is committed to sourcing components and materials from companies that share our values regarding respect for human rights, integrity and environmental responsibility. Kollmorgen is also...
NEMA Frame Size [toc] General A key part of motor interchangeability has been the standardization of frame sizes. This means that the same power, speed, and enclosure will normally have the same frame size...