PMB33E-00114-03
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The PMB33E-00114-03 is a NEMA Size 34 brushless servomotor with neodymium-iron-boron magnets. Manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series, it features a digital encoder with 2048 ppr resolution. It operates at a typical rated speed of 3,500 RPM and delivers 1.4 Nm torque at 240V AC.
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Product Description:
The PMB33E-00114-03 Servomotor by Pacific Scientific is designed for precise motion control in industrial automation systems. The motor uses a triple-stack rotor design to enhance torque output within compact dimensions. The overall housing length of the servo motor is 210.3 mm. The motor shaft is round. It measures 12.7 mm in diameter and 25.4 mm in length.
The PMB33E-00114-03 servo motor delivers a continuous stall torque of 4.9 Nm to ensure a stable holding force under static load. The motor can provide a rated torque of 4.4 Nm during continuous rotation. The peak torque reaches 11.0 Nm for brief acceleration phases. The maximum mechanical speed is 3800 rpm. These values support consistent torque delivery across dynamic load changes. The winding code is E, with a continuous current rating of 5.3 A RMS. The peak current required during transient conditions is 10.6 A RMS. The torque coefficient of PMB33E-00114-03 servo motor is approximately 0.92 Nm/A RMS. This enables accurate control in torque-regulated applications. The winding resistance of the motor is 2.7 Ohms. It has a line-to-line inductance of 5.3 mH, which supports smooth operation under closed-loop servo systems. The rotor position sensing is provided by a resolver feedback mechanism. This system offers high accuracy in shaft angle detection without requiring an encoder. Electrical connections are made using an AMP Mate-N-Lock connector.
A shaft seal of the PMB33E-00114-03 servo motor is factory-installed to minimize particulate ingress. A PTC thermistor is embedded in the winding assembly for thermal protection and over-temperature signaling. The insulation system is classified under Class F to allow winding temperature tolerance up to 155°C. The laminated stator core improves heat dissipation and magnetic efficiency. The servo motor weighs approximately 4.4 kg.
Frequently Asked Questions about PMB33E-00114-03:
Q: How does PMB33E-00114-03 manage accurate rotor position detection?
A: The PMB33E-00114-03 servomotor uses a resolver for position feedback. This provides precise angle detection without the alignment complexity of digital encoders.
Q: What are the advantages of PMB33E-00114-03’s triple-stack rotor design?
A: The PMB33E-00114-03 Brushless Servomotor includes a triple-stack rotor to increase torque density. This design delivers higher output while maintaining compact motor length.
Q: How does PMB33E-00114-03 handle dynamic torque changes?
A: The PMB33E-00114-03 servo motor supports peak torque up to 11.0 Nm. This allows short acceleration bursts without exceeding thermal or mechanical limits.
Q: What makes PMB33E-00114-03 effective in servo-regulated systems?
A: The PMB33E-00114-03 servomotor ensures linear torque control with a torque constant of 0.92 Nm/A RMS. This supports stability in closed-loop servo applications.
Q: What thermal protections are included in PMB33E-00114-03?
A: The PMB33E-00114-03 Brushless Servomotor embeds a PTC thermistor in the windings. This enables temperature monitoring and system-level protection from overheating.
