3N63-000-3

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The 3N63-000-3 servo motor offers a rated speed of 3830 rpm, a rated power output of 88 watts, a peak pulse current of 26 amps, and a rotor inertia of 3.67 x 10⁻⁶ kg·m². Manufactured by Pacific Scientific, it belongs to the Low Inertia PMDC Servomotors series and features a continuous stall torque of 0.233 nm.

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Product Description:

The Pacific Scientific produces 3N63-000-3 servo motor with a winding configuration that provides a rated torque of 0.22 Nm. Its operating speed is 3830 rev/min while its attainable peak speed goes up to 4850 rev/min. The motor housing diameter is 2.7 inches for compact mounting and its overall length is approximately 3.5 inches.

The 3N63-000-3 servo motor operates on a rated voltage source of 60 V DC and utilizes 3.5 A of current while its peak current handling goes up to 26.0 A. Its armature resistance has a value of 2.75 Ohms and it possess an inductance that is maintained at 400 microhenries. This motor lacks an encoder assembly for feedback and manages thermal stability by relying on passive heat dissipation during operations without any external blower unit. Its back EMF constant is rated at 8.36 V for every 1000 rounds and it produces a constant torque of 0.080 Nm against the usage of every ampere of current. To cope with load changes at the output shaft it comes with a very low electrical time constant of 0.15 milliseconds and its mechanical time constant is rated as 1.6 milliseconds for smooth torque transitions. The 3N63 servo motor has an angular moment of inertia equal to 0.000367 kgm² to allows quicker servo responses in dynamic motion systems.

The 3N63-000-3 servo motor consumes 88 W of power and it’s input to output continuous power dissipation is 61 W. It supports a mounting heatsink as well of size 127 mm x 215.9 mm x 12.7 mm for efficient cooling during repetitive and long duty cycles. The 3N63 servo motor’s static friction is measured as 0.013 Nm for reduced stiction and it possess a viscous damping factor maintained at 0.007 Nm/Krpm.

Continuous Stall Torque (nm)
0.233
Cooling
None
Electrical Time Constant (ms)
0.15
Mechanical Time Constant (ms)
1.6
Peak Pulse Current (a)
26
Rated Current (a)
3.5
Rated Power Output (w)
88
Rated Speed (rpm)
3830
Rated Torque (nm)
0.22
Rated Torque (oz-in)
31
Rated Voltage (v)
42
Rotor Inertia (kg·m²)
3.67 x 10⁻⁶
Torque Constant (nm/a)
0.080
Weight (kg)
1.36
Weight (lbs)
3.0
  • 3N63 000 3
  • 3N63-OOO-3
  • 3N630003

Frequently Asked Questions about 3N63-000-3:

Q: What is the significance of the 0.15 ms electrical time constant in the 3N63-000-3 servo motor?

A: The low 0.15 ms electrical time constant allows for faster response to changes in load, improving performance in dynamic motion applications. This helps reduce torque oscillations and improve system accuracy.

Q: Why is the back EMF constant of 8.36 V/1000 rpm important in the 3N63-000-3?

A: The back EMF constant helps determine the motor's speed-torque characteristics, allowing for better control and efficiency in applications requiring constant speed. It ensures the motor can achieve high speed with optimal energy usage.

Q: How does the low static friction of 0.013 Nm benefit the 3N63-000-3 servo motor?

A: Low static friction reduces resistance to initial movement, leading to smoother starts and less energy loss during motion. This contributes to higher system efficiency, especially in low-speed or precision applications.

Q: What role does the viscous damping factor of 0.007 Nm/Krpm play in the 3N63-000-3 motor’s operation?

A: Viscous damping helps reduce oscillations and smoothens the transition during high-speed changes. This is particularly useful for maintaining stability in systems where rapid speed adjustments are needed.

Q: Why does the 3N63-000-3 servo motor have a mechanical time constant of 1.6 ms?

A: The 1.6 ms mechanical time constant ensures smooth torque transitions, allowing the motor to adapt to load variations more effectively. This is especially beneficial in preventing overshooting or undershooting in motion systems.


Internal Product Review

  • ‘‘The 3N63-000-3 servo motor offers a compact and efficient solution for precise motion control. It operates at 60 V DC, with a peak current capacity of 26 A and a low electrical time constant of 0.15 ms. This motor is commonly used in robotics and conveyor systems for precise movement.’’

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