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Universal Auto insertion machine X Y motor – U12DNUA/S6T,42428104 – Smart EMS factory partner

Universal Auto insertion machine X Y motor – U12DNUA/S6T,42428104


We provide China Made new motor for sale.


Brushed Motor X-Y Positioning System Motion Fault Diagnostic Procedure

The following procedure is intended to be used as a diagnostic tool for determining general causes for X Y Positioning System Motor failures and Motion Faults. Using a known good motor, an attempt will be made to isolate the problem between there motor, or the other system issues. Use this procedure only on Generation 8, Single Head Machines equipped with Brushed Motors (reference part number 42418104).


If you have to replace a Motor, please return it to Binghamton in the box the replacement comes in.


Good Motor, Blue Kendall grease (40833810) for leadscrew, 10W (40833827) oil for ball bushings & axis shafts, Phillips head screw driver, Allen wrenches


IM Diagnostics

X-Y Home Zero Set-up

Installing X-Y Positioning system motors


30 minutes if no problems found

3 hours if motor is found to be defective

5 + hours if other system problems are found INFORMATION (please fill out)

STEP 1 (Perform on X axis first, then repeat on Y axis)

In this step, you will be running a single axis at reduced speed & acceleration while observing the Max DAC output, which is proportional to the torque. If the torque is too high, this may indicate motor or positioning system problems.


Run “Quick Start” Select #1 “Set-up BEC”

When macro is done zeroing (quit don’t save) to exit “set-up BEC” screen


On the LEFT side, click the pull down menu of the “SECTION” box. Select “UIMC 1 AXIS INPUTS”

Click the BLUE “MOVE” button & edit the following parameters: Speed from 116 to 10

Acceleration from 2400 to 500

Click the Auto Cycle & Continuous Run check boxes Cycle the axis from 0” to 18” or 0 count to 144,000 count

Observe the “Maximum DAC Output During Move” number for approximately 5 minutes and fill out the STEP 1 CHART below.

If the number ever gets above 340 maximum, the system has too much friction. It could be the motor or other system problems.

If the “Maximum DAC output during move” is less than 340. Stop. No further steps are required for this Axis.

This Axis appears to be functioning correctly.


Proceed to STEP 2


In this step you will perform specific PM activities that have a large impact on the amount of torque required to

operate the positioning system.

Grease the lead screw, oil the shafts & re-tension the belt.

Cycle at normal speed and acceleration for ½ hour, check the appropriate box below.

Speed…………116 Acceleration….2400

Was the lead screw dry?



Was the Shaft dry?



Was the belt loose?



Cycle at the reduced Speed & Acceleration per STEP 1 and fill out the STEP 2 CHART below. If it gets considerably better (Max DAC below 340) you’re done. If not, go on to STEP 3.



In this step you are removing the motor in preparation for Step 4 and making further investigation into possible sources of high positioning system friction.

Remove the motor and move axis by hand.

Feel and listen for binds, hesitations or noises in the lead screw and/or ball bearing/shafts.

What was found?                                                                                                                 

Check axial play/gap in the lead screw by grabbing it by hand & pushing in both directions. There should be no perceivable axial play in the leadscrew.

Max DAC Output During Move

Max DAC Output During Move

Was there any play?



Replace any parts that you think it has problem.

What was replaced?

Part No                     Description


 PastedGraphic-84 PastedGraphic-82 PastedGraphic-83

Motor Maintenance Procedure



The purpose of this document is to describe how to maintain the “Gold” series motors,  PMI type U12M4, and U12M4H (UIC part number 11467000, 13570000, 40051001, and 40051002, sold before November 1995)   This procedure should be performed every six months,  or more frequently if found to be necessary.

Tools Required:

Allen wrenches

Screw driver (5 to 6 mm wide)

Screw driver,  small blade (2,5 to 3 mm wide)

Adjustable wrench


Push in the machine’s Emergency Stop button

Turn off the machine’s power


1. Note which wires are attached to which motor terminal.   Using an adjustable wrench,  remove the wires from the motor’s terminals.

2. Remove the motor from the machine

3. Remove the brushes from the motor

4. The minimum usable length of the carbon part of the brushes is  .240 inches ( 6,1 mm) long.  If the brushes wear shorter than  .240 inches,  the motor’s commutator wires can be damaged by electrical arcing.

So that the brushes will not wear to less than .240 inches,  we recommend that they be replaced when they become  .300 inches long ( 7,62mm). Universal’s part number for a set of four (4) brushes for these motors is  B26100021.

5. Check that the motor’s shaft turns smoothly.  If not,  then the bearings are damaged,  and the motor should be discarded.

6. Using clean, dry, compressed air,  blow the carbon dust out of the motor.

7. Look through the brush holes and examine the condition of the commutator wires,  while turning the motor shaft.   If there are any burned or damaged wires,  the motor must be discarded.

8. To install the brushes into the motor,  place the carbon block in the brush hole.

9. Using a small screwdriver,  gently push the spring down into the brush hole.   It will be necessary to reposition the blade of the screw driver several times into the coils of the spring,  to make the spring go into the hole.

10. It may be necessary to push the metal tab on the side of the brush contact to make it go into the brush hole.

11. After the metal tabs have gone into the hole,  use the screw driver to hold the brush contact down in the brush hole.

12. Pull the small screw driver blade out while moving the screw into place.   Be sure that the brush contact’s tabs do not come completely out of the brush hole when doing this.   Start the screw in the threaded hole by turning it clockwise with your fingers.   If it will not turn easily,  remove it, and repeat step 11.   Then tighten the screw gently using the large screw driver.

13. Install all (4) brushes into the motor.   Mount the motor on the machine again.   Reattach the wires on to the proper motor terminals.

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