PMB33E-20116-01 Pacific Scientific
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The Pacific Scientific PMB33E-20116-01 is a NEMA Size 34 servomotor with a square key shaft design and a shaft seal, belonging to the PMB Brushless Servomotors series. It features 4096 pulse per revolution encoder resolution and a digital encoder with commutation. The motor uses flying leads with AMP connectors and has a nominal stall current of 7.4 ARMS at 240 Vac.
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Product Description:
The PMB33E-20116-01 belongs to the PMB Brushless Servomotors series produced by Pacific Scientific. As a three-phase permanent-magnet servomotor, it supplies closed-loop torque and velocity control for positioning tables, pick-and-place axes, and other motion loops that need repeatable accuracy. Its operating role suits automated equipment that depends on smooth acceleration, stable speed regulation, and consistent stopping behavior across repeated cycles.
This model fits a NEMA Size 34 mounting format, so it can attach to standard 3.4-inch square frames already used on many machines. Rotor length follows stack length code 3, and that magnetic volume lets the motor deliver a nominal stall current of 7.4 ARMS when powered from 240 VAC drives. Feedback is supplied by a 4096 ppr optical encoder, giving the controller 12-bit cyclic resolution at the shaft for precise commutation and servo loops. The encoder also integrates hall tracks, so electrical zero is maintained by the digital encoder with commutation device rather than separate hall boards. Torque is transferred through a square key shaft profile, which helps prevent rotational slip between the motor and couplings during load changes.
Electrical termination is simplified by flying leads with AMP connectors, allowing the cable whip to run directly to the drive cabinet without additional junctions. A factory-installed shaft seal is included under the customization option, which helps reduce the chance of oil or fine dust entering the front bearing in gearhead or belt-driven environments. Magnetic stack height uses a stack length multiple of 3, balancing continuous torque with rotor inertia for moderate-speed indexing duty. The motor is produced by Pacific Scientific and follows a layout commonly used in servo systems that need standard mounting, integrated feedback, and direct cable connection. This combination supports compact machine designs where reliable shaft feedback and straightforward motor hookup are both important.
Frequently Asked Questions about PMB33E-20116-01:
Q: What type of electrical connector does the PMB33E-20116-01 motor use?
A: This model comes equipped with flying leads terminated with AMP connectors.
Q: What is the encoder resolution on the PMB33E-20116-01 servomotor?
A: The PMB33E-20116-01 uses a digital encoder with a resolution of 4096 pulses per revolution.
Q: What shaft design does the PMB33E-20116-01 servomotor have?
A: This motor features a square key shaft design for secure mechanical coupling.
Q: What is the frame size of the PMB33E-20116-01 servomotor?
A: The PMB33E-20116-01 has a NEMA Size 34 frame.
Q: What is the nominal stall current of the PMB33E-20116-01 at 240 Vac?
A: With a nominal stall current of 7.4 ARMS at 240 Vac, this motor is suitable for demanding motion control tasks.
