Kollmorgen DDR & KBM Frameless Direct Drive Rotary Motors
The Kollmorgen DDR & KBM Frameless Direct Drive Motor Series (featured model: KBM-43H01-A00 12.5 Nm 1200 RPM) represents Kollmorgen's ultimate direct-drive technology, providing unhoused rotor and stator component kits engineered to embed directly into OEM machine structures. By utilizing the machine's own internal bearings and frame, KBM frameless motors completely **eliminate mechanical couplings, gearboxes, belts, and external motor housings**, achieving maximum compact spatial integration, **zero mechanical backlash, extreme torsional stiffness, and whisper-quiet operation**. Designed with high-coercivity Neodymium-Iron-Boron magnets and large hollow-bore rotors for routing cables, laser beams, or fluid lines, KBM motors cover continuous stall torque output from 0.15 Nm up to 3,500 Nm across 14 frame sizes (stator outer diameters from 60mm to 603mm). Optimized for seamless autotuning with **Kollmorgen AKD and AKD2G digital servo drive amplifiers**, KBM frameless direct drive motors deliver uncompromised precision for robotics joints, medical gantry axes, optics azimuth mounts, semiconductor wafer inspection tables, and defense gimbal drives.
Technical Specifications
| Featured Model | KBM-43H01-A00 (12.5 Nm Continuous Stall Torque, 1200 RPM Rated Speed, 168mm Stator OD, 100mm Through-Hole Bore, Class H) |
|---|---|
| Brand / Manufacturer | Kollmorgen (Regal Rexnord Motion Control) |
| Product Series | KBM Series Frameless Direct Drive Rotary (DDR) Stator/Rotor Kits |
| Frame Sizes Covered | KBM-10, KBM-14, KBM-25, KBM-30, KBM-43, KBM-45, KBM-57, KBM-60, KBM-76, KBM-88, KBM-118, KBM-163, D&DDR Series |
| Continuous Stall Torque | 0.15 Nm to 3,500 Nm (0.11 lb-ft to 2,580 lb-ft); Peak Torques up to 10,000 Nm |
| Operating Bus Voltages | 120V AC, 240V AC, 400V AC, & 480V AC Mains Input (75V DC Low Voltage Winding Available) |
| Design Architecture | Separate Stator & Rotor Kit; Large Hollow Through-Bore; Integrated PTC Thermistor / KTY Thermal Sensors |
| Thermal & Winding Class | Class H Insulation System (180°C Rated); Fully Encapsulated Stator Coil Winding for Harsh Thermal Dissipation |
Documentation & Resources
Kollmorgen KBM Frameless Series Frame Size & Torque Matrix
Complete selection matrix for Kollmorgen KBM frameless direct drive rotary motors. Review outer diameters, hollow bore dimensions, continuous stall torques, peak torques, and standard model codes:
| Motor Frame Size | Stator Outer Diameter | Rotor Hollow Bore (mm) | Cont. Stall Torque (Nm) | Peak Torque (Nm) | Kollmorgen Model Code Example |
|---|---|---|---|---|---|
| KBM-10 Series | 60 mm | 15 mm Bore | 0.15 Nm - 0.65 Nm | 0.45 Nm - 1.95 Nm | KBM-10H01-A00 |
| KBM-14 Series | 82 mm | 25 mm Bore | 0.45 Nm - 2.10 Nm | 1.35 Nm - 6.30 Nm | KBM-14H01-A00 |
| KBM-25 Series | 118 mm | 45 mm Bore | 1.80 Nm - 7.50 Nm | 5.40 Nm - 22.5 Nm | KBM-25H01-A00 |
| KBM-43 Series | 168 mm | 100 mm Bore | 5.20 Nm - 22.0 Nm | 15.6 Nm - 66.0 Nm | KBM-43H01-A00 |
| KBM-60 Series | 222 mm | 140 mm Bore | 15.0 Nm - 65.0 Nm | 45.0 Nm - 195.0 Nm | KBM-60H01-A00 |
| KBM-88 Series | 312 mm | 200 mm Bore | 45.0 Nm - 210.0 Nm | 135.0 Nm - 630.0 Nm | KBM-88H01-A00 |
| KBM-118 Series | 420 mm | 280 mm Bore | 120.0 Nm - 650.0 Nm | 360.0 Nm - 1950.0 Nm | KBM-118H01-A00 |
| KBM-163 Series | 603 mm | 410 mm Bore | 450.0 Nm - 3500.0 Nm | 1350.0 Nm - 10000.0 Nm | KBM-163H01-A00 |
Conventional Motor/Gearbox Drive to KBM Frameless Direct Drive Upgrade Guide
Embedded equipment designs using standard housing motors, harmonic drives, or planetary gearboxes can be upgraded to Kollmorgen KBM frameless kits for zero-backlash direct motion:
| Legacy Mechanical Drive System | Mechanical Limitations | Current KBM Frameless Kit | Key Performance & Space Advantages |
|---|---|---|---|
| Servo Motor + Harmonic / Cycloidal Drive | Torsional windup, wear, speed restrictions, backlash buildup | Kollmorgen KBM-25 / KBM-43 Kit Zero Backlash | Directly embeds inside robotic joint, infinite torsional stiffness, maintenance-free. |
| Standard Housed Servo + Belt Reduction | Enclosed motor footprint, belt stretch, alignment wear | Kollmorgen KBM-43 / KBM-60 Kit Compact Integration | Integrates directly into machine casting, large hollow bore for through-cable routing. |
| Legacy Direct Drive Motor (Large Housed) | Excess heavy housing weight, redundant bearings | Kollmorgen KBM-60 / KBM-88 Kit Weight Reduction | Eliminates redundant motor bearings/housings, reducing total gantry axis payload up to 40%. |
Expert Technical Sourcing & Frameless Motor Integration Notes
When designing next-generation robotic joints, medical CT scanner gantries, defense pan-tilt gimbals, or semiconductor wafer handlers, embedding Kollmorgen KBM frameless direct drive motors delivers unmatched advantages: complete elimination of mechanical backlash, significant reduction in total system weight and envelope, large hollow through-bore routing flexibility, and plug-and-play autotuning with Kollmorgen AKD / AKD2G digital servo drive amplifiers. Simply supply us with your existing motor dimensions, torque requirements, or complete KBM model code (e.g., KBM-43H01-A00 or KBM-60H02-A00), and our technical engineering team will deliver a 100% compliant frameless direct drive specification and proposal.
Core Benchmark Model Standard Configurations
- KBM-10H01-A00 (0.15 Nm Kit)
- KBM-14H01-A00 (0.45 Nm Kit)
- KBM-25H01-A00 (1.80 Nm Kit)
- KBM-43H01-A00 (5.20 Nm Kit)
- KBM-45H01-A00 (12.0 Nm Kit)
- KBM-60H01-A00 (15.0 Nm Kit)
- KBM-76H01-A00 (35.0 Nm Kit)
- KBM-88H01-A00 (45.0 Nm Kit)
- KBM-118H01-A00 (120.0 Nm Kit)
- KBM-163H01-A00 (450.0 Nm Kit)
- Kollmorgen Frameless Direct Drive Motor
- Kollmorgen KBM Large Hollow Bore Stator
- Kollmorgen KBM Neodymium Magnet Rotor
- Kollmorgen Robotic Joint Frameless Motor
- Kollmorgen Medical Gantry Direct Drive
- Kollmorgen Defense Gimbal Direct Drive
- Kollmorgen AKD Drive Matched KBM Motor
- Kollmorgen Zero Backlash Frameless Kit
- Kollmorgen High Torque Density Stator Kit
- Kollmorgen Embedded Servo Stator Rotor
