Product Description:

The RBEH-01501-E01 frameless brushless motor is produced by Kollmorgen and belongs to the RBE Rotary Motors series. Intended for direct embedding into mechanical housings, it supplies compact rotary drive for automation axes, spindle stages, and gimbaled platforms. By omitting an outer case, the stator and rotor set lets the motor sit close to load bearings, which can reduce reflected inertia and improve servo response in applications that require precise torque in a compact space. This arrangement can also shorten the mechanical stackup and reduce compliance between the motor and the driven load.

Rated for a continuous output of 95 W, the motor can deliver steady mechanical work without exceeding its winding temperature limits when heat is removed properly through the surrounding structure. A continuous stall torque of 0.193 N-m is the steady holding torque available when shaft speed is zero and current remains at its thermal limit. For rapid positioning tasks, the rotor can reach a maximum mechanical speed of 16500 RPM, which is well above the rated operating speed. Detent effects are minimized because cogging torque is held to 0.00671 N-m, supporting smooth low-speed motion and stable command tracking. Physical space requirements remain compact because the overall body diameter does not exceed 71.63 mm, allowing integration into small spindle cavities, robotic wrists, and other tightly packaged rotary assemblies.

Transient behavior is improved by low static friction, limited to 0.0141 N-m, so control effort is not wasted overcoming a large deadband at startup. Fast starts and short overload periods can draw on a peak torque of 0.555 N-m, which supports brief acceleration demands before the motor returns to continuous operation. The stator flange accepts fasteners on a 59.18 mm bolt circle, which helps align the assembly with bearing plates or adjoining structures. Heat flows outward through the lamination stack at a thermal resistance of 4.10 °C/W, a useful value when the twelve-pole motor is mounted to a shared heat sink or a liquid-cooled frame. That thermal path is important in frameless installations because the surrounding machine structure becomes part of the cooling system.