U9M4A

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The Kollmorgen U9M4A motor from the ServoDisc Pancake DC Motors can reach a rated speed of 3000 RPM. It operates with a peak torque of 360 oz-in, has a rated power output of 86 Watts, and delivers a rated continuous torque of 39 oz-in at 25°C. The motor achieves a peak current of 56 Amps.

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Product Description:

The U9M4A motor manufactured by Kollmorgen comes with magnets on the end plates. This motor has a zero cogging property. The product encounters a magnetic field parallel to the shaft. This device has a small and lightweight design. The unit has 10 times more acceleration than a standard servomotor. It offers assurance of high productivity in motion control applications. This motor has a low inertia armature.

The product can be used in a drive system along with a compatible servo amplifier. This device depicts a hot surface at the time of operation. The unit should be used within the ambient operating conditions specified by the manufacturer. It can run without arcing at any speed. This motor has a flat package because of the disc armature design. The product has a low electrical time constant. This device portrays a maximum shaft end play of 0.001 inches. This unit does not have a torque drop-off as the speed is increased. Its magnets are positioned such that there is very little air gap between them.

This motor supports a large number of commutations. The product should be stored only in the horizontal orientation. This device has brushes that last almost as long as its bearings. The unit can be used for a wide range of applications. It has no cogging torque at all. This motor must be connected with the cables provided by the manufacturer. The product has an entirely different internal construction for the armature. This device is a good choice to meet rapid acceleration and deceleration requirements. The unit does not have any iron-associated losses. It portrays a smooth rotation at any speed. This motor has large torsional stiffness and close physical coupling.

Back Emf Constant ± 10%
4.85 V/KRPM
Cogging Torque
0 oz-in
Continuous Stall Current
5.3 Amps
Continuous Stall Torque
31 oz-in, 22 N-cm
Maximum Recommended Speed
6000 RPM
Peak Current
56 Amps
Peak Torque
360 oz-in, 254 N-cm
Rated Continuous Current
6.8 Amps
Rated Continuous Torque @ 25°c
39 oz-in, 27 N-cm
Rated Continuous Torque @ 40°c
35 oz-in, 25 N-cm
Rated Power Output
86 Watts
Rated Speed
3000 RPM
Rated Terminal Voltage
26.8 Volts
Terminal Resistance ± 10%
1.310 Ohms
Torque Constant ± 10%
6.56 oz-in/Amp, 4.63 N-cm/Amp

Frequently Asked Questions about U9M4A:

Q: What is the maximum axial load of the U9M4A motor?

A: The U9M4A motor can withstand a maximum axial load of 11 lbs.

Q: Why does the U9M4A motor have low radio frequency interference?

A: The U9M4A motor has low radio frequency interference because the magnets are positioned on the end plates.

Q: What amplifiers are supported by the U9M4A motor?

A: The U9M4A motor supports EM19 linear amplifiers and KXA Plus amplifiers.

Q: What is the key highlight of the U9M4A motor?

A: The key highlight of the U9M4A motor is its flat disc armature.

Q: What is the maximum speed recommended for the U9M4A motor?

A: The maximum speed recommended for the U9M4A motor is 6000 RPM.


Internal Product Review

  • ‘‘The U9M4A motor has an armature with multiple layers of copper conductors. The product is an ideal option for any industrial application. Its fast acceleration helps in achieving high productivity.’’

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