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TBM™ Series Frameless Motors

These torquer brushless motors are optimized to deliver high torque at relatively low speeds in low-voltage applications such as robotic joints, mobile robots and other battery-operated machines. Compact and efficient, the TBM™ Series is designed to be directly embedded in your machine using the machine's own bearings to support the rotor..

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

Increase Uptime

Reduce the complexity of your machine's design. Directly driving your load by removing failure prone transmissions will decrease the likelihood of costly failures and reduce the need for expensive, preventive maintenance. The end result is a reduced total cost of ownership in your machine.

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  • Multiple frame sizes ranging from 60 mm (2.36 inches) up to 129 mm (5.08 inches) OD
  • 24/48 VDC standard optimized windings
  • Low-cogging designs
  • 155°C internal winding temperature continuous capability
  • Stainless steel rotors for corrosion protection
  • Banded Rotors
  • RoHS Compliant
  • CE compliant at rated voltage
  • Custom windings available
  • Latching hall effects available, 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


  • 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


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

Selection Guide Design Tools

Modification Is Our Standard

We understand that commercial off-the-shelf motors can’t meet every design and performance demand. That’s why we offer thousands of standard modifications.

Installation Features Standard Modifications
Rotor hub geometry Round, hollow, flanged, keyway, flat
Thru-bores from 5 mm (0.2 in.) up to published maximum (refer to outline drawing)
Mounting Customer-specified bolt-hole diameter and circumferential pattern
Lead length Base model: 152 mm (6 in.) min.
Customer-specified: 150 mm (5.9 in.) to 1200 mm (47 in.)
Lead colors Base model: red, white, black
Other colors, customer-specified
Thermal sensor PTC or linear thermistor-type devices
Speed/Torque Capabilities Standard Modifications
Winding gauges Wide winding range available (includes lead wire change)
Stack lengths 3-5 stack lengths available depending on frame size

We Can Also Fully Customize

Don’t see what you need? We’ll work with you to customize a perfect fit for your application, with rapid prototyping and ramp-up to full-rate production. Get in touch and let us know what you are looking for.

Application Form

Direct Drive Rotary Product Selector

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Design Tools

Get Started

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.

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Title Language(s) Date Size
Kollmorgen Automation and Motion Control English 14 Jun 2021 15.53 MB Copy URL
Kollmorgen Automation Solutions and Product Catalog EMEA English 21 Jun 2018 15.99 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 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
Resolving Servo Feedback Choices This PowerPoint presentation explains the differences between different types of servo motor feedback devices, including: The differences between absolute and incremental devices. The...
Ingress Protection of Servo Motors [toc] Sealing is an important design tool used to prolong the life of motors against harsh environments containing dust or liquid contaminants. There are arguably an unlimited number of...
NEMA Baugröße [toc] Allgemeines Als Schlüssel zur Austauschbarkeit von Motoren dient die Normierung der Baugrößen. Dies bedeutet, dass vergleichbare Motorleistung und Geschwindigkeit bei Motoren allen...
Motordaten Legende Symbol Dimension Deutsch Beschreibung M0 Nm Stillstandsdrehmoment Das Stillstandsdrehmoment kann bei Drehzahl n<100 U/min und Nenn- Umgebungsbedingungen...
Normen und Richtlinien [toc] Allgemeines Struktur des Normenwesens am Beispiel der EN ISO 12100 Europäische Richtlinien New Legislative Framework Blue Guide: Leitfaden für die Umsetzung der...


Title Language(s) Date Size
Blue Guide German 15 Jul 2015 Copy URL
pdfCEL China Efficiency Labelling for Servo and Stepper Motors English 17 Dec 2021 139.72 KB Copy URL
pdfEAC Certification for Motors English, Russian 09 Dec 2020 98.97 KB Copy URL
pdfKollmorgen CE Technical Notice - Servo and Stepper Motors Efficiency English 26 Aug 2020 389.92 KB Copy URL
pdfTBM EU RoHS Declaration (RoHS10) English 26 May 2021 73.87 KB Copy URL
pdfTBM REACH SVHC Certificate of Compliance English 26 May 2021 53.47 KB Copy URL