PMB33F-00216-03
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The PMB33F-00216-03 is a NEMA Size 34 brushless servomotor with an IP40 rating and a rotor inertia of 0.000404 kg·m². Manufactured by Pacific Scientific, it is part of the PMB Brushless Servomotors series, offering a continuous stall torque of 5.42 Nm. It features 4096 ppr encoder resolution and a peak torque of 16.1 Nm.
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Product Description:
The PMB33F-00216-03 is a permanent magnet servomotor from Pacific Scientific that is built as a part of the PMB series and it comes in a frame size of NEMA 34. It uses a long stack lamination that increases torque density and its continuous stall torque rating is 5.42 Nm. This motor operates on 240 VAC and utilizes 9 A of steady current in normal conditions.
The PMB33F-00216-03 motor is capable of a peak stall torque value 16.1 Nm for short durations and its operating speed is 4600 r/min. Its shielded bearing permits safe reliable operations up to a maximum of 6000 r/min rotational speed. The unit’s winding type F is designed for a peak current tolerance of 27.1 Arms and its line-to-line inductance is measured as 2.8 mH. Its rotor moment of inertia is 0.404 x 10⁻³ kgm² that enables high acceleration responses and its construction includes class H insulation for heat resistance. The magnets installed are neodymium iron boron for strong flux density and its housing is rated as IP40. This PMB33F motor includes shaft seal and PTC thermistor, its shaft seal provides protection against contamination entry and the PTC thermistor monitors winding temperature to prevent overheating. It uses MS style flying leads for power and encoder connections.
The PMB33F-00216-03 motor features a digital encoder with 4096 ppr rating for precise position sensing and it offers robustness against electrical noise. Its shaft configuration is of a flat design that possess maximum protection due to its sealing ring and it measures 11.9 mm in diameter. The unit has 0.60 Nm/A of torque constant value and its voltage constant is 0.37 Vrms/rad/s. It offers 0.169 Nm of static friction for smooth start and its damping coefficient is 0.038 Nm/krpm.
Frequently Asked Questions about PMB33F-00216-03:
Q: Why is class H insulation significant in PMB33F-00216-03?
A: The class H insulation endures temperatures up to 180 °C, offering superior heat tolerance. This enables the motor to maintain reliability under prolonged high-load conditions.
Q: How does the PTC thermistor enhance PMB33F-00216-03 safety?
A: The PTC thermistor monitors winding temperature and increases resistance as heat rises, triggering protective systems. It prevents overheating and potential thermal damage during high-duty cycles.
Q: What is the benefit of the shielded bearing in this motor?
A: The shielded bearing limits dirt and debris ingress, reducing contamination risk. It boosts operational reliability, especially in industrial environments.
Q: How does the 4096 ppr digital encoder in PMB33F-00216-03 improve control?
A: With 4096 pulses per revolution, the encoder offers high-resolution position feedback. This enables finer motion accuracy and smoother trajectory control.
Q: Why use MS-style flying leads in PMB33F-00216-03?
A: Its flying leads allow flexible, direct wiring without bulky connectors, simplifying installation. They’re especially beneficial when tight space or custom routing is needed.
