Product Description:

The PMB33C-00114-01 is a brushless servo motor manufactured by Pacific Scientific for the PMB Brushless Servomotors series. Designed for 240 VAC drive systems, it delivers controlled torque and position feedback in packaging, assembly, and light material-handling stations where compact rotary power is required. The unit couples to reducers or direct loads through its precision machined shaft and digital feedback channels.

The frame follows NEMA Size 34, so the 3.4-inch square face registers with common servo gearheads and clamp plates. Under rated conditions the winding can hold 3.8 ARMS continuously at stall, letting the drive regulate position without overheating. Feedback comes from a 2048 ppr quadrature encoder; with ×4 decoding the controller receives 8192 counts per turn, adequate for millidegree resolution on modest gear ratios. The sensing assembly is a Digital Encoder with commutation, embedding Hall transitions within the same disk to simplify wiring. All motor leads exit as Flying leads with AMP connectors, allowing users to route power, Hall, and incremental lines through custom harnesses rather than fixed receptacles.

To protect internal bearings the motor is built with a Shaft Seal, an option that blocks coolant splash and airborne dust at the front end-bell. The output rod carries a Flat rather than a keyway, giving a low-profile surface that suits set-screw couplings while minimizing stress risers. Torque capability is scaled by a lamination stack length multiple of 3, providing additional rotor volume without changing the mounting footprint. Within Pacific Scientific’s database the classification PMB Series Brushless Servomotor links this model to parameter files so the drive immediately recognizes encoder format and current limits during commissioning.