Product Description:

The PMB31D-10100-00 brushless servomotor is produced by Pacific Scientific for the PMB Brushless Servomotors series. It converts drive commands into controlled torque for indexing tables, pick-and-place arms, and other precision axes in automated lines. A permanent-magnet rotor and three-phase stator provide smooth commutation without brush wear. The compact frame supports tight position control while helping conserve machine space in densely packed equipment. In servo applications, this layout helps the axis respond quickly to command changes during repeated starts, stops, and short positioning moves.

Electrical and mechanical interfaces are arranged so the motor can be wired and mounted without additional adapters. Power exits the stator through flying leads with AMP connectors, allowing quick termination inside a control enclosure. The case follows the NEMA Size 34 mounting standard, so the pilot diameter and bolt circle align with common gearheads and slide assemblies. Under locked-rotor conditions at 240 V AC, the phase windings admit up to 5.4 ARMS, and the drive must supply that current while staying within thermal limits. For position feedback, a brushless resolver is mounted at the non-drive end, and motion is transferred by a round shaft that works well with clamps, pulleys, or flexible couplings. This combination supports reliable feedback and straightforward mechanical coupling in compact motion systems.

A stack length multiple of 1 indicates the shortest magnetic stack available in this frame, which helps reduce inertia and supports quick acceleration on short indexing moves. The unit is designated a Standard Motor, so it uses the standard configuration for this model rather than a special winding or sealing option. That arrangement is suited to general-purpose servo duty where predictable response and simple installation are important. The shorter stack can also help the motor fit applications with limited axial space. The brushless design keeps wear points low during repeated cycling and supports steady operation over long production runs.