Part Location Diagram of 42-66-0755 Milwaukee Keyless Chuck
See part 50 in the diagram
Replacing your Milwaukee Cordless Drill Keyless Chuck
( Grid squares measure 1x1 inch )

Keyless Chuck 42-66-0755

Manufactured by:
Milwaukee
ERP Number:
ERP10129270
Part Number:
42-66-0755
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

Less than 15 mins 

(4 rated repairs) ?

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Product Description

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This is an OEM sourced replacement part designed for use with Milwaukee drills/drivers. It allows user to secure drill bits. The ratcheting action clicks the jaws tightly into place for reduced bit slippage. If your drill's bit retention is suffering, the rotation feels stiff, or the chuck has seized up entirely, a new chuck should fix the problem. This chuck includes the screws.

Troubleshooting

This part works with the following brands:
  • Milwaukee
This part works with the following products:
  • Cordless Drill
  • Hammer Drill
  • Electric Drill

Videos For installing this part.

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Replacing your Keyless Chuck
Replacing your Keyless Chuck
Replacing your Keyless Chuck

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(2 Reviews)
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Questions & Answers

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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

A Bit Difficult 

Less than 15 mins 

(4 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Needed a new chuck

james from river falls, Wisconsin

6 of 6 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
42-66-0755
I watched your YouTube video on how to do this repair. It was very informative and easy to follow, made the job easy. I copied it so others could watch it. Thanks!

https://www.youtube.com/watch?v=usC8unA5RiA
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Seized chuck

Emmanuel from Jersey City, New Jersey

4 of 4 people found this instruction helpful.
Difficulty Level:
Very Difficult
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
42-66-0755
Remove the reverse threaded center bolt with a screwdriver
I was able to tighten the chuck down on the small end of an allen wrench
I put the drill in the drill mode and on low speed
Then hit the allen wrench with a hammer to release it from the spindle
Install the new chuck on in reverse order
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Drills loosening up in chuck, and falling out.

Ronald from Saddle Brook, New Jersey

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
42-66-0755
Removed the allen screw from the middle of the chuck LH thread, hit then the long end of an allen wrench that was held by the chuck and threaded it off the spindle. Installed the new chuck and screw in the chuck screw.
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old chuck broke

mark from omaha, Nebraska

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
42-66-0755
remember left handed threads is it.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP10129270
Manufacturer Part Number: 42-66-0755
Brand Model Number Description
Milwaukee 0235-20 Electric Drill - Electric Drill / Driver
Milwaukee 0235-21 Electric Drill - Electric Drill / Driver
Milwaukee 0302-20 Electric Drill - Electric Drill / Driver
Milwaukee 0302-50 Electric Drill - Electric Drill / Driver
Milwaukee 0302-55 Electric Drill - Electric Drill / Driver
Milwaukee 0613-20 Cordless Drill - 14.4V 1/2&#34 Cordless Hammer Drill
Milwaukee 0614-20 Hammer Drill - Hammer Driver Drill
Milwaukee 0615-20 Cordless Drill - 14.4 Volt 1/2" Lok-Tor II Driver-Drill
Milwaukee 0615-24 Cordless Drill - 14.4 Volt 1/2" Lok-Tor II Driver Drill
Milwaukee 0616-20 Cordless Drill - 14.4V 1/2&#34 Cordless Drill
Milwaukee 0617-20 Hammer Drill - 14.4 Volt 1/2" Lok-Tor II Hammer Drill
Milwaukee 0617-24 Hammer Drill - 14.4 Volt 1/2" Lok-Tor II Hammer Drill
Milwaukee 0622-20 Cordless Drill - Cordless Drill / Driver
Milwaukee 0624-20 Hammer Drill - Cordless Hammer Drill
Milwaukee 0625-20 Cordless Drill - 18 Volt 1/2" Lok-Tor II Driver-Drill
Milwaukee 0625-24 Cordless Drill - 18 Volt 1/2" Lok-Tor II Driver Drill
Milwaukee 0627-20 Hammer Drill - 18 Volt 1/2" Lok-Tor II Hammer Drill
Milwaukee 0627-24 Hammer Drill - 18 Volt 1/2" Lok-Tor II Hammer Drill
Milwaukee 0724-20 Hammer Drill - Cordless 1/2" Hammer Drill
Milwaukee 0724-24 Hammer Drill - Cordless 28V 1/2&#34 Hammer-Drill
Milwaukee 0726-20 Hammer Drill - 28 Volt 1/2" Hammer-Drill
Milwaukee 0726-22 Hammer Drill - 28 Volt 1/2" Hammer Drill
Milwaukee 0822-20 Electric Drill - 1/2 " Driver-Drill
Milwaukee 0822-24 Electric Drill - 18 Volt 1/2&#34 Driver-Drill
Milwaukee 0824-20 Hammer Drill - 1/2 " Hammer Drill
Milwaukee 0824-24 Hammer Drill - 18 Volt 1/2&#34 Hammer-Drill
Milwaukee 2610-20 Cordless Drill - 18 Volt Magnum 1/2" 34 Driver-Drill
Milwaukee 2610-24 Cordless Drill - 18 Volt Magnum 1/2&#34 Driver-Drill
Milwaukee 2611-059 Cordless Drill - Milwaukee 2611-059-(D40a) Parts
Milwaukee 2611-20 Hammer Drill - (B54A) 18 Volt Magnum 1/2&#34 Hammer-Drill