PMB31B-00116-00
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The PMB31B-00116-00 is a brushless servomotor manufactured by Pacific Scientific. Part of the PMB Brushless Servomotors series, it features a digital encoder with commutation. The motor provides a peak torque of 4.56 Nm. With a NEMA Size 34 frame, it weighs 2.9 kilograms and offers IP40 protection.
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Product Description:
The Pacific Scientific's PMB31B-00116-00 Brushless Servo Motor features a digital commutation encoder for accurate position feedback and controlled synchronization. This motor adopts neodymium-iron-boron magnets, which allow a high magnetic field for greater torque density and efficiency.
The voltage constant of this servo motor is 0.49 VRMS/rad/sec (RMS, line-to-neutral), which defines its stable voltage-to-speed relation. Its 8-pole design helps ensure even rotation, efficient magnetic flux distribution, and enhanced torque output. This motor has a peak torque of 6.26 Nm at its maximum capacity, making short periods of power for increased loads or quick accelerations possible. A nominal torque of 1.90 Nm is generated by the PMB31B-00116-00 servo motor, providing the demanded output for continuous operation at a stable level. Being rated at a thermal resistance of 1.08 °C/Watt, this servo motor provides effective heat transfer and secure operation. With a 2.5 kg weight, it combines durability and affordable installation handling to make it ideal for integration into small assemblies. A static friction of 0.09 Nm provides this motor with low resistance during startup and directional change.
This PMB31B-00116-00 servo motor runs with an 8.0 ARMS current at maximum torque, handling heavy electrical loads without loss of control precision. Its electromagnetic performance is supplemented by 19.6 mH line-to-line inductance to enable accurate current regulation and dynamic smoothness. This servo motor is of a NEMA 34 frame size, which makes it mechanically compatible with a broad spectrum of industrial equipment. Its electrical interfacing is enabled through flying leads with AMP connectors, which are easy to wire and still offer high reliability under vibration. The PMB31B-00116-00 motor operates at installation altitude within the range of 0 to 1000 meters above sea level for reliable performance in production areas.
Frequently Asked Questions about PMB31B-00116-00:
Q: How does the digital encoder with commutation benefit PMB31B-00116-00?
A: The encoder ensures accurate rotor position detection. It improves synchronization and reduces errors in closed-loop control systems.
Q: Why is the neodymium-iron-boron magnet type used in this motor?
A: These magnets deliver high magnetic strength. They allow compact design while providing strong torque density.
Q: How does the 8-pole design affect the motor’s performance?
A: An 8-pole setup increases torque density. It also enables smoother rotation under varying loads.
Q: Why is 19.6 mH inductance significant in PMB31B-00116-00?
A: It supports stable current regulation. This ensures consistent torque even under sudden load changes.
Q: How do flying leads with AMP connectors improve motor integration?
A: They provide flexible wiring during installation. The connectors also ensure secure electrical connections.
