Product Description:

The PMB33E-00214-01 is a brushless servo motor produced by Pacific Scientific within the PMB Brushless Servomotors series. As a permanent-magnet motor for closed-loop positioning, it supplies torque and velocity commands to automation axes that need accurate feedback control. The motor uses electronic commutation, so it can pair directly with modern digital drives. Encoder-based commutation helps the drive maintain smooth current control during low-speed motion and position changes. This makes the unit suitable for packaging lines, pick-and-place systems, and small machine tools that require repeatable motion.

The frame conforms to NEMA Size 34, allowing installation on most 86 mm square mounting patterns while keeping overall length compact. This standard frame helps the motor fit machines that already use common Size 34 mounting hardware. Under a 240 VAC supply, the winding can sustain a nominal stall current of 7.4 ARMS, which indicates the continuous torque available before thermal limits are reached. Power and feedback exit the housing through flying leads with MS connectors, which simplifies routing in tight cabinets and preserves quick-disconnect capability. The separate leads also reduce crowding at the motor body when cable runs bend immediately after exit. Position data comes from an incremental encoder with 2048 ppr, and commutation tracks are generated by an integrated digital encoder with commutation, enabling precise torque production without Hall sensors.

For environments where oil mist or fine dust may reach the shaft opening, the motor can be ordered with a shaft seal, which helps protect bearing lubricant and the magnetic gap. The output shaft uses a flat profile rather than a keyway, offering secure coupling with clamp-style pulleys and reducing stress concentrations at the shaft surface. Electromagnetic length is scaled by a stack length multiple of 3. A longer active stack increases torque without requiring a larger mounting face. The motor keeps the same basic frame format while adding more active magnetic length inside the housing.