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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.

Get a Quote Selection Guide

Product available worldwide



  • 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

Direct Drive Rotary Product Selector

Kollmorgen Product Selector

Media & Downloads

Title File Language Date Share URL
Blue Guide English, German
Share URL
CE Certification - Technical Notice for TBM and TBMS English
Share URL /sites/default/files/2023-07/CE%20Technical%20Notice%20-%20TBM.pdf
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
TBM及TBMS CE认证 English
Share URL /sites/default/files/2023-07/TBM%20%E5%8F%8ATBMS%20CE%E8%AE%A4%E8%AF%81_1.pdf

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

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