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Part Number: 23-66-2190
Availability: 14 in stock
Price: $17.90
Ships within 1 business day
This part is an OEM from Milwaukee. The switch is composed of metal, wiring and plastic, and is compatible with many grinders, shears and nibblers. This item is often fitted into the motor housing and left brush holder, allowing the operator to (de)activate the tool. The switch is sold individually. Pliers and a screwdriver are necessary for the proper replacement. Please refer to the specific manual for further repair instructions.
Product Information
Manufacturer: Milwaukee
Product Number: 23-66-2190
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Related Products
Products Compatibility

This item works with the following types of products:

  • • Grinder
  • • Nibbler
  • • Shear
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
Tool Type:
Parts Used:
Switch - 23-66-2190
Repair Difficulty:
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Crimpers, T20 torx driver
Switched Failed on Milwaukee 5192 Die Grinder
To replace the switch on these units is fairly easy to do as long as you are comfortable crimping wires. The screws themselves can either take a flat blade screwdriver or a T20 torx driver (preferable). You will need two (2x) closed end splices. You can get these from Home Depot SKU #298233 (pack of 10x).

1- Remove the three (3x) screws near the power cable on the backside of the unit. This will allow access to the switch and brushes.
2- Slide the old switch out of the housing and cut the two wire crimps that are attached to the switch leads.
3- Crimp the new switch wires back into place where the old switch was connected. This is a SPST switch so it doesn't matter which wire goes where, just get them both attached.
4- Slide the new switch back into the housing. The switch has a cutout that aligns with the tab in the grinder's housing to ensure proper orientation. Ensure the wires are pressed back into the housing so they won't be pinched by the back cover or the motor. The switch is actually held in place by the back cover so it will still be loose until that is replaced.
5- Replace the back cover and reinsert the three (3x) screws removed in step 1.
6- At this time you can plug the die grinder into the wall to ensure properly switch function.

Happy Grinding!
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