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Product profile

Kollmorgen KBM Frameless Motors

Kollmorgen KBM is a family of frameless brushless direct-drive motors designed to be integrated directly into a machine's own bearings and structure. The r...

Facts

Company
Kollmorgen
Product type
component_family
Status
commercial
Primary capability
robot_joint_actuation
Website
https://www.kollmorgen.com/en-us/products/motors/direct-drive/kbm-series-frameless

About Kollmorgen KBM Frameless Motors

KBM is Kollmorgen's frameless brushless direct-drive motor family for robot joints, machine tools and precision industrial motion. The rotor is supported by the host machine's bearings, allowing designers to embed the motor directly into their mechanical structure and eliminate gearboxes, belts, pulleys and coupling devices. This provides zero-backlash actuation in a compact package.

The worldwide commercial range spans 120–480 VAC servo and high-torque form factors. Published continuous stall torque runs from 0.49 Nm on KBM(S)-10 configurations to 3,445 Nm on KBM(S)-260 configurations. Kollmorgen offers modified windings, stack lengths, hubs, connections and thermal characteristics, so values must be resolved at exact part-number level before integration.

Market context

https://zlsbkmaixmmnjrgpkcyp.supabase.co/storage/v1/object/public/robotics_assets/products/korthos-product-candidates-2026-08-22-batch-34-net-new/kollmorgen-kbm-frameless-motors-official-16x9.jpg, frameless_direct_drive_motor, frameless_direct_drive_motor_family, 1600, 900, 9726d7de1ff2f25696ed6c1a044a2c30a92071050bd35ddf4ddb208a8ba74c0f, reviewed_16x9_official_media, false, Frameless Motor Family, robotics_assets, https://www.kollmorgen.com/fr-fr/products/motors/direct-drive/s%C3%A9rie-kbm-sans-carter-frameless, https://www.kollmorgen.com/en-us/products/motors/direct-drive/kbm-series-frameless, official, https://zlsbkmaixmmnjrgpkcyp.supabase.co/storage/v1/object/public/robotics_assets/products/korthos-product-candidates-2026-08-22-batch-34-net-new/kollmorgen-kbm-frameless-motors-official-16x9.jpg, Approved by user after strict contact-sheet review; rendered at exact 1600x900 with no letterbox, added border or transparent background., 2026-08-22T19:51:43.028Z, generic_component, products/korthos-product-candidates-2026-08-22-batch-34-net-new/kollmorgen-kbm-frameless-motors-official-16x9.jpg, 2026-08-22, frameless_motor_family, false, source_photo_16x9_crop, Exact named product v...

Summary

Type: Frameless motor family

Core: Embedded direct-drive actuation

Function: Robot-joint and machine motion

Audience: Robot and machine OEMs

Specifications

continuous_winding_temperature
155 °C maximum continuous winding temperature
customization
Windings, stack lengths, hub dimensions, connections and thermal/performance characteristics can be modified
motor_construction
Frameless brushless motor; the machine provides its own bearing support for the rotor
servo_range
KBM(S)-10 through KBM(S)-45 servo-form-factor sizes
torque_motor_range
KBM(S)-43 through KBM(S)-260 torque-motor form-factor sizes
voltage_range
120–480 VAC family offering

Operations

Environment
robot_joint, robotic_arm, machine_tool, industrial_machine
Primary user
robot_oems, motion_control_engineers, machine_builders, robot_integrators
Role
robot_joint_actuation, direct_drive_motion, industrial_automation, precision_motion
Interaction model
frameless_integration, direct_drive, servo_control, robot_mounted_component
Mobility class
robot_joint_component, integrated_actuator, fixed_component
Product detail
https://zlsbkmaixmmnjrgpkcyp.supabase.co/storage/v1/object/public/robotics_assets/products/korthos-product-candidates-2026-08-22-batch-34-net-new/kollmorgen-kbm-frameless-motors-official-16x9.jpg, frameless_direct_drive_motor, frameless_direct_drive_motor_family, 1600, 900, 9726d7de1ff2f25696ed6c1a044a2c30a92071050bd35ddf4ddb208a8ba74c0f, reviewed_16x9_official_media, false, Frameless Motor Family, robotics_assets, https://www.kollmorgen.com/fr-fr/products/motors/direct-drive/s%C3%A9rie-kbm-s...

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