Product Description:

The VLM21E-BKNR-30 is a brushless servo motor manufactured by Kollmorgen and supplied through the VLM Brushless Motors series. Designed for positioning and velocity control, the motor converts drive current into controlled rotary motion for pick-and-place axes, light conveyors, and other general-purpose automation equipment. Its brushless design reduces wear associated with mechanical commutation, while closed-loop feedback allows the connected servo drive to correct changes in speed and position under varying loads.

This model is delivered with no internal brake, so an external mechanism must hold the load when drive torque is unavailable. Its NEMA 23 or 60 mm metric frame compatibility allows installation on commonly used gearheads and mounting plates. Rotor position is returned through resolver feedback, which provides analog sine-cosine signals that remain reliable at elevated temperatures and resist electrical noise. The stator windings are factory-terminated to a 3-meter cable, reducing the amount of field wiring required between the motor and control cabinet. Power conductors exit through an unterminated shielded cable, allowing the appropriate field-side connector to be selected for the connected drive.

Feedback conductors are routed through a shielded encoder cable, providing a low-impedance return path and reducing crosstalk when the cable is bundled near motor phase conductors. Drive torque is produced by a single-stack rotor, which keeps the housing compact and reduces reflected inertia for responsive acceleration. The B shaft and mount code indicates the keyway and pilot arrangement used to connect the motor to compatible couplings and mounting surfaces. Internal copper density follows the E winding design, providing electrical characteristics suited to compatible midrange VLM servo drives. The short magnetic stack and resolver-based control support repetitive motion where compact dimensions, stable feedback, and moderate torque are required.