Skip to main content
TBM (Torquer Brushless Motor) Series direct drive frameless motor

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

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.

Start Comparing



  • 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

Direct Drive Rotary Product Selector

Kollmorgen Product Selector

Media & Downloads

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 File Language Date Share URL
2D/3D Models for All TBM Series English
Share URL
TBM-129XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBM-129.pdf
TBM-60XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBM-60.pdf
TBM-76XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBM-76.pdf
TBMS-129XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBMS-129.pdf
TBMS-60XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBMS-60.pdf
TBMS-76XX-X00 Direct Drive Frameless 2D Drawing English
Share URL /sites/default/files/public_downloads/TBMS-76_0.pdf
Title File Language Date Share URL
Blue Guide English, German
Share URL
CEL China Efficiency Labelling for Servo and Stepper Motors English
Share URL /sites/default/files/public_downloads/CEL%20Technical%20Notice%20on%20Efficiency%20for%20Servo%20and%20Stepper%20Motors.pdf
EAC Certification for Motors English, Russian
Share URL /sites/default/files/public_downloads/eac_declaration_motors.pdf
Kollmorgen CE Technical Notice - Servo and Stepper Motors Efficiency English
Share URL /sites/default/files/public_downloads/Kollmorgen%20CE%20Technical%20Notice%20-%20Servo%20and%20Stepper%20Motors%20Efficiency.pdf
TBM EU RoHS Declaration (RoHS10) English
Share URL /sites/default/files/public_downloads/RoHS10_TBM%20Standard.pdf
TBM REACH SVHC Certificate of Compliance English
Share URL /sites/default/files/public_downloads/REACH_R211N_TBM%20Standard.pdf


Trade Compliance
February 21, 2023
Resolving Servo Feedback Choices
November 4, 2021
Ingress Protection of Servo Motors
April 18, 2019

View all articles

Contact Us - Kollmorgen

Contact Us >

Follow the links here to find contact information for Global and North American support and sales information.
AGV Partner Portal

AGV Partner Portal >

From the AGV Partner Portal you will be able to access our NDC Services, such as Technical Support, Customer Service and Training. This is also where you download our latest NDC software.
Kollmorgen Channel Partners

Kollmorgen Channel Partner Site >

This secure site provides access to confidential material for the private use of approved partners only.

Engineer the Exceptional

Learn how to engineer exceptional machines, robots and vehicles with the highest-performing, most reliable motors, drives, automation solutions and more.

Learn More