PMB33E-20100-03
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The PMB33E-20100-03 stepper motor features a NEMA 17 frame size, a holding torque of 0.39 Nm, a step angle of 1.8°, and a rotor inertia of 57 g·cm². Part of the PMB Brushless Servomotors series by Pacific Scientific, it operates with 2 phases and has a lightweight design of 0.28 kg.
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Product Description:
The PMB33E-20100-03 Motor from Pacific Scientific with stack length multiple of 3 is designed with an E winding type. It has a size 34 NEMA frame and its nominal stall current is 7.4 ARMS. It ensures reliable electrical performance in industrial automation applications as it runs on a maximum voltage of 240 Volts alternating current.
The PMB33E-20100-03 motor features a square key shaft that helps a safer mechanical connection. It includes flying leads with AMP connectors that helps electrical integration easier and reliable. It includes a resolver sensor for an accurate feedback of motor shaft position and speed. It comes with a shaft seal and a PTC thermistor as part of its customization code that further enhances its safety. It is able to offer a continuous stall torque of 5.42 newton meters and a peak torque of 16.1 newton meters. This servo motor 0.404 kg·m² × 10⁻³ inertia is essential for a stable operation. It has a static friction of 0.169 newton meters and a viscous damping coefficient of 0.038 Nm/kRPM that enhances its dynamic response. It supports controlled thermal behavior because of its thermal resistance of 0.78 centigrade per watt and thermal time constant of 32 minutes.
This PMB33E-20100-03 motor has a high electromechanical efficiency as it is designed with a torque constant of 0.93 Nm/ARMS and voltage constant of 0.56 VRMS per rad per sec. It supports sustained delivery of torque as it has continuous stall current of 5.8 amperes. It offers high output when needed as it draws current of 17.5 amperes at peak torque.
Frequently Asked Questions about PMB33E-20100-03:
Q: How does the inertia value of the PMB33E-20100-03 motor affect system performance?
A: A lower inertia allows quicker acceleration and deceleration. It improves responsiveness in applications requiring frequent speed changes.
Q: What is the impact of the resolver sensor on motor control?
A: A resolver provides continuous position feedback that ensures precise speed and torque regulation. It improves stability in closed-loop control systems.
Q: Why is a shaft seal and PTC thermistor included in the PMB33E-20100-03 motor?
A: The shaft seal minimizes contamination risks during operation. The PTC thermistor provides thermal protection by signaling overheating conditions.
Q: How does resistance influence efficiency in this motor?
A: Higher resistance increases copper losses that reduce efficiency. A balanced resistance value ensures stable performance without excessive heating.
Q: What advantage does a square key shaft provide in torque transmission?
A: It ensures secure coupling between the motor and load. This reduces slippage and enhances mechanical reliability under heavy torque.
