PMB31B-20114-03

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The Pacific Scientific PMB31B-20114-03 is part of the PMB Brushless Servomotors series and features a NEMA Size 34 motor frame. It provides a continuous stall torque of 2.11 Nm and a peak torque of 6.26 Nm. The motor weighs 2.5 kg and is equipped with flying leads with AMP connectors alongside a 2048 ppr digital encoder.

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Product Description:

This PMB31B-20114-03 brushless servomotor offered by Pacific Scientific has one rotor stack. The motor features accurate and cost-effective performance positioning capabilities. This product showcases a simple and fast installation process. The device always requires a digital brushless servo drive for its operation. This unit needs a 240 VAC operating voltage. Its encoder supports 2048 pulses per revolution. The motor uses AMP connectors with flying leads for its connection.

This product offers maximum power and torque because of exposed laminations. The device has double-shielded bearings. This unit houses a PTC thermistor and also a shaft seal. Its shaft must not be used to pick up the motor. This motor has Class F winding insulation. The product’s windings are present in its stator. The device doesn’t have any negative environmental impact. This unit features a rugged construction. It has a 2.7 Arms nominal stall current.

The motor is supported by a keyway shaft with a square design. This product is the right choice for low-volume industrial applications. The device is apt for applications where position and speed are controlled. This unit’s commutation is performed electronically by the servo drive. Its bearings portray high precision and have a long service life. |The motor is an indispensable part of a closed-loop servomechanism. This product portrays very smooth rotation with minimum noise. The device delivers an increased acceleration rate. This unit’s speed reduces to 85% when it operates on a single phase. It has high responsiveness. The brushless servomotor is designed with permanent laminations that increase the power and torque.

Connector Type
Flying leads with AMP connectors
Continuous Stall Torque
2.11 Nm (18.7 lb-in)
Encoder Resolution
2048 ppr
Motor Size
NEMA Size 34
Nominal Stall Current @240vac Max
2.7 ARMS
Peak Torque
6.26 Nm (55.4 lb-in)
Rotor Inertia
0.137 kgmb2 d7 10b3 (1.21 lb-in-sb2 d7 10b3)
Sensor Type
Digital Encoder with commutation
Stack Length Multiple
1
Static Friction (max)
0.09 Nm (0.80 lb-in)
Thermal Resistance
1.08 b0C/Watt
Thermal Time Constant
28 min
Torque Constant (rms)
0.79 Nm/ARMS (7.03 lb-in/ARMS)
Viscous Damping Coefficient
0.0124 Nm/kRPM (0.110 lb-in/kRPM)
Weight (motor Only)
2.5 kg (5.5 lbs)
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Frequently Asked Questions about PMB31B-20114-03:

Q: What is the insulation class of the PMB31B-20114-03 motor?

A: The PMB31B-20114-03 motor has Class F insulation.

Q: What kind of bearings does the PMB31B-20114-03 motor have?

A: The PMB31B-20114-03 motor has double-shielded bearings.

Q: What is the size of the leads of the PMB31B-20114-03 motor?

A: The size of the leads of the PMB31B-20114-03 motor is 18 inches.

Q: Where are the permanent magnets of the PMB31B-20114-03 motor located?

A: The permanent magnets of the PMB31B-20114-03 motor are located in its rotor.

Q: How many phases does the PMB31B-20114-03 motor have?

A: The PMB31B-20114-03 motor has three phases.


Internal Product Review

  • ‘‘The PMB31B-20114-03 motor comprises a shaft seal that enhances its protection class. It has Class F insulation. The motor has a brushless design.’’

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