KBM-79H03-E03 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
Current response time:
4 Minutes
55 Seconds
The KBM-79H03-E03 is a brushless motor manufactured by Kollmorgen as part of their KBM Brushless Motors series. The motor features an outside diameter of 259.63 mm, an axial width of 127.00 mm, and has a through bore diameter of 152.43 mm. It weighs 32.1 kg, comes with a motor inertia of 0.114 kg·m², and an insulation rating for high voltage above 240 Vac.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The KBM-79H03-E03 is a frameless brushless torque motor supplied by Kollmorgen in the KBM Brushless Motors series. Built for integration directly onto a machine shaft and housing, its rotor-stator kit enables direct-drive motion without couplings, belts, or gear reduction. In industrial automation, it provides controlled low-speed, high-torque rotation for positioning or continuous-duty axes that require minimal mechanical compliance and precise servo-loop performance. Its frameless format allows a smaller overall machine envelope while keeping mass near the load, which improves dynamic repeatability.
The motor has an outside diameter of 259.63 mm and an axial width of 127.00 mm, giving it a low-profile shape that fits inside rotary stages. A through-bore measuring 152.43 mm permits shafts, cables, or pneumatic lines to pass through the center of the motor. The magnetic assembly uses 32 poles, raising the electrical frequency for smoother torque delivery at low speeds. Dynamic response is supported by a rotor-stator inertia of 0.114 kg·m², which balances acceleration capability with load matching. The assembly weighs 32.1 kg, and its insulation system is suitable for drives operating above 240 VAC. Its copper windings support continuous operation at temperatures up to 155 °C, allowing the motor to withstand demanding thermal cycles without degradation.
Residual torque ripple is limited, with peak-to-peak cogging torque measuring 0.447 Nm (p-p) and breakaway torque remaining below 1.36 Nm. During motion, viscous damping of 31.2 Nm/kRPM helps attenuate velocity fluctuations caused by process disturbances. Heat produced in the windings exits through the mounting surface, and the thermal path has a resistance of 0.220 °C/W for predictable temperature-rise calculations. An embedded KTY84-130 sensor supplies real-time winding temperature feedback, allowing the drive to reduce current before the rated thermal limit is approached. This feedback supports thermal protection during positioning cycles and extended continuous-duty operation.
