Skip to main content
KBM Series Frameless

KBM™ Series Frameless Motors

The KBM™ Series provides low- and high-voltage motors (120–480 Vac) 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 modify leads, windings, stack lengths and more—you can choose an exact-fit frameless motor that provides simple installation, long life and the highest performance in the most compact space.

Get a Quote Selection Guide

Global
Product available worldwide

Features

Features

  • 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

Benefits

  • 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
  • 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.

Specifications

KBM(S) Frames Outside Diameter Through Bore Continuous Stall Torque Peak Stall Torque Continuous Output KW
"Servo" Form Factor
KBM(S)-10 59.96 mm
(2.95 in)
16.01 mm
(.63 in)
.49 - 1.45 Nm 1.17 - 4.91 Nm 0.55 - 0.910 KW
KBM(S)-14 74.9 6mm
(2.95 in)
20.01 mm
(.79 in)
1.22 - 2.92 Nm 3.28 - 10.50 Nm 0.58 - 1.23 KW
KBM(S)-17 84.96 mm
(3.34 in)
30.01 mm
(1.18 in)
2.06 - 6.20 Nm 5.95 - 24.00 Nm 0.715 - 1.55 KW
KBM(S)-25 109.96 mm
(4.33 in)
50.01 mm
(1.97 in)
4.85 - 11.1 Nm 14.4 - 54.8 Nm 0.73 - 3.255 KW
KBM(S)-35 139.96 mm
(5.51 in)
65.01 mm
(2.56 in)
12.4 - 25.9 Nm 40.8 - 93.0 Nm 2.75 - 5.75 KW
KBM(S)-45 189.96 mm
(7.48 in)
85.02 mm
(3.35 in)
29.7 - 54.6 Nm 119 - 218 Nm 4.525 - 7.670 KW
"Torquer" Form Factor
KBM(S)-43 159.78 mm
(6.29 in)
76.28 mm
(3.00 in)
6.11 - 44.2 Nm 18.0 - 153 Nm 1.23 - 2.875 KW
KBM(S)-57 202.90 mm
(7.99 in)
104.17 mm
(4.10 in)
18.8 - 109 Nm 60 - 441 Nm 2.31 - 3.00 KW
KBM(S)-60 229.85 mm
(9.05 in)
105.05 mm
(4.14 in)
29.4 - 154 Nm 69.1 - 393 Nm 2.96 - 8.42 KW
KBM(S)-79 259.63 mm
(10.22 in)
152.43 mm
(6.00 in)
43.5 - 222 Nm 152 - 1075 Nm 2.585 - 3.75 KW
KBM(S)-88 331.46 mm
(13.05 in)
155.01 mm
(6.10 in)
102 - 545 Nm 197 - 1200 Nm 3.87 - 16.0 KW
KBM(S)-118 361.11 mm
(14.22 in)
225.04 mm
(8.86 in)
172 - 672 Nm 498 - 2400 Nm 7.78 - 19.85 KW
KBM(S)-163 605.0 mm
(23.82 in)
315.50 mm
(12.42 in)
764 - 1329 Nm 1966 - 3932 Nm 17.3 - 20.1 KW
KBM(S)-260 850.0 mm
(33.46 in)
557.85 mm
(21.96 in)
1932 - 3445 Nm 6494 - 12812 Nm 13.7 - 18.5 KW

Selection Guide Design Tools

Direct Drive Rotary Product Selector

Kollmorgen Product Selector

Media & Downloads

Title File Language Date Share URL
科尔摩根KBM电机选型手册_2016_RevG Chinese, Simplified
Share URL /sites/default/files/2024-03/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E6%97%A0%E6%A1%86%E7%94%B5%E6%9C%BA%E9%80%89%E5%9E%8B%E6%8C%87%E5%8D%97_2016_RevG.pdf
KBM Part Number Scheme English
Share URL /sites/default/files/public_downloads/kbm_partnumber_e_0.pdf
KBM Typenschlüssel German
Share URL /sites/default/files/public_downloads/kbm_d.pdf
科尔摩根KBM安装指导_2016_使用结构胶粘合 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E5%AE%89%E8%A3%85%E6%8C%87%E5%AF%BC_2016_%20%E4%BD%BF%E7%94%A8%E7%BB%93%E6%9E%84%E8%83%B6%E7%B2%98%E5%90%88.pdf
科尔摩根KBM安装指导_2016_夹固和螺栓连接 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E5%AE%89%E8%A3%85%E6%8C%87%E5%AF%BC_2016_%E5%A4%B9%E5%9B%BA%E5%92%8C%E8%9E%BA%E6%A0%93%E8%BF%9E%E6%8E%A5_0.pdf
Title File Language Date Share URL
Blue Guide English, German
Share URL https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ%3AC%3A2022%3A247%3ATOC
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
China Compulsory Product Certification (CCC Technical Notice) English
Share URL /sites/default/files/2024-01/CCC%20Technical%20Notice%20on%20Scope%20of%20Kollmorgen%20Products.pdf
KBM General RoHS10 Certification English
Share URL /sites/default/files/public_downloads/KBM%20general%20RoHS10%20certification%20REV%2006_24_2019.pdf
KBM Reach SVHC Certificate of Compliance English
Share URL /sites/default/files/public_downloads/REACH_223_Standard%20KBM.pdf
KBM/KBMS UL Certification EN English
Share URL /sites/default/files/public_downloads/KBM_KBMS%20UL-Certificate_of_Compliance.pdf
Kollmorgen CE Technical Notice - KBM English
Share URL /sites/default/files/public_downloads/Kollmorgen%20CE%20Technical%20Notice%20-%20KBM.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
科尔摩根KBM电机CE认证 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E7%94%B5%E6%9C%BACE%E8%AE%A4%E8%AF%81.pdf
科尔摩根KBM电机EAC认证 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E7%94%B5%E6%9C%BAEAC%E8%AE%A4%E8%AF%81.pdf
科尔摩根KBM电机REACH认证 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E7%94%B5%E6%9C%BAREACH%E8%AE%A4%E8%AF%81.pdf
科尔摩根KBM电机RoHS认证 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E7%94%B5%E6%9C%BARoHS%E8%AE%A4%E8%AF%81.pdf
科尔摩根KBM电机UL认证 Chinese, Simplified
Share URL /sites/default/files/public_downloads/%E7%A7%91%E5%B0%94%E6%91%A9%E6%A0%B9KBM%E7%94%B5%E6%9C%BAUL%E8%AE%A4%E8%AF%81.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 KBM Series English
Share URL https://webassistants.partcommunity.com/23d-libs/kollmorgen/assistant/pcomm.html?series=kbm
KBM 2D Outline Drawing (KBM-10) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-10%29_0.pdf
KBM 2D Outline Drawing (KBM-118) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-118%29_0.pdf
KBM 2D Outline Drawing (KBM-14) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-14%29_0.pdf
KBM 2D Outline Drawing (KBM-163).pdf English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-163%29.pdf
KBM 2D Outline Drawing (KBM-17) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-17%29_0.pdf
KBM 2D Outline Drawing (KBM-25) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-25%20Rev%20E%29.pdf
KBM 2D Outline Drawing (KBM-260) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-260%29_0.pdf
KBM 2D Outline Drawing (KBM-35) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-35%29_0.pdf
KBM 2D Outline Drawing (KBM-43) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-43%29_0.pdf
KBM 2D Outline Drawing (KBM-45) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-45%29_0.pdf
KBM 2D Outline Drawing (KBM-57) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-57%29_0.pdf
KBM 2D Outline Drawing (KBM-60) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-60%29_0.pdf
KBM 2D Outline Drawing (KBM-79) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-79%29_0.pdf
KBM 2D Outline Drawing (KBM-88) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBM-88%29_0.pdf
KBM 2D Outline Drawing (KBMS-10) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-10%29_0.pdf
KBM 2D Outline Drawing (KBMS-118) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-118%29_0.pdf
KBM 2D Outline Drawing (KBMS-14) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-14%29_0.pdf
KBM 2D Outline Drawing (KBMS-163).pdf English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-163%29.pdf
KBM 2D Outline Drawing (KBMS-17) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-17%29_0.pdf
KBM 2D Outline Drawing (KBMS-25) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-25%20Rev%20F%29.pdf
KBM 2D Outline Drawing (KBMS-260) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-260%29_0.pdf
KBM 2D Outline Drawing (KBMS-35) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-35%29_0.pdf
KBM 2D Outline Drawing (KBMS-43) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-43%29_0.pdf
KBM 2D Outline Drawing (KBMS-45) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-45%29_0.pdf
KBM 2D Outline Drawing (KBMS-57) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-57%29_0.pdf
KBM 2D Outline Drawing (KBMS-60) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-60%29_0.pdf
KBM 2D Outline Drawing (KBMS-79) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-79%29_0.pdf
KBM 2D Outline Drawing (KBMS-88) English
Share URL /sites/default/files/public_downloads/KBM%202D%20Outline%20Drawing%20%28KBMS-88%29_0.pdf

Kollmorgen Direct Drive Technology Enhances the Accuracy and Throughput of Electric Vehicle Battery Production

As electric vehicles promise cleaner, more sustainable transportation, the need for reliable lithium-ion batteries is skyrocketing. Battery manufacturers are looking for innovative ways to maximize production quality and speed.
Learn More

How Compliant Robotic Tooling Delivers Safety and Precision in Finishing Operations

Force-controlled blending or finishing operations typically rely upon human operators who can provide subtle compliance in grinding, deburring or polishing. Unfortunately, these operations create inherent risks for these workers—from injuries to repetitive motion challenges.
Learn More

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