Product Description:

The PMB33C-20100-00 is a brushless servomotor produced for precision positioning tasks in industrial automation. It belongs to the PMB Brushless Servomotors series offered by Pacific Scientific. The motor provides closed-loop torque and speed control for machine tools, pick-and-place gantries, and light material-handling axes. In these systems, it translates drive commands into repeatable shaft motion for indexing, feeding, and placement operations. The brushless design also avoids brush wear, which helps maintain stable performance during frequent start-and-stop duty.

The motor uses a mechanical frame of NEMA Size 34, which gives it a 3.4-inch square flange for compact mounting arrangements. When supplied from a 240 Vac amplifier, the winding can deliver a nominal stall current of 3.8 ARMS, supporting continuous torque output without overheating under rated conditions. Power and feedback exit through flying leads with AMP connectors, which allows routing through tight cable paths before final connection. Rotor position is detected by a resolver, providing analog sine-cosine feedback for commutation and velocity control in electrically noisy environments. This feedback method is well suited to industrial equipment where vibration, cable motion, and electrical noise can affect less robust signal systems.

This unit is supplied as a standard motor, so it comes without special windings or seals. The electromagnetic core uses a stack length multiple of 3, which increases active iron and copper mass for higher torque at the same current density. Output power is transferred through a square key shaft, allowing rigid coupling to pulleys or gearheads without relying on friction alone. This shaft style is commonly used where positive torque transmission is required without slip. The longer active stack also supports applications that need more torque from a motor with the same basic frame size.