Product Description:

The PMB33C-20200-00 brushless servomotor is produced by Pacific Scientific within the PMB Brushless Servomotors series. As a rotary actuator, it converts drive current into controlled torque and speed for indexing tables, packaging axes, or other closed-loop motion stages in industrial automation. The motor works with servo drives that meter current according to position feedback, allowing precise velocity regulation and quick reversal in automated machinery. Its feedback-based operation also suits applications that require steady low-speed control along with frequent starts and stops.

This model is built on a NEMA Size 34 frame, so mounting dimensions align with standard 3.4-inch square flanges common on mid-torque machines. Under a 240 VAC supply, the winding can hold position at a nominal stall current of 3.8 ARMS. Rotor position is reported by resolver feedback, which provides angle information with strong resistance to electrical noise. Motor power exits through flying leads with MS connectors, and this pigtail arrangement supports secure connection with MIL-type bayonet mating hardware. Mechanical output is transferred through a square key shaft, helping prevent slippage between the shaft and the coupled load during rapid acceleration.

A stack length multiple of 3 increases axial copper volume for higher continuous torque without changing the flange size. Because the unit is supplied as a standard motor, it uses factory-standard windings and insulation rather than a custom build. The product is a PMB series brushless servomotor, so it uses electronic commutation instead of carbon brushes. Consistent materials and coil construction support repeatable operation across this build code from Pacific Scientific. This motor format fits machine layouts that need predictable servo response over repeated duty cycles.