Part Location Diagram of 02-04-0620 Milwaukee Ball Bearing
See part A-9 in the diagram
Replacing your Milwaukee Angle Grinder Ball Bearing
( Grid squares measure 1x1 inch )

Ball Bearing 02-04-0620

Manufactured by:
Milwaukee
ERP Number:
ERP10116825
Part Number:
02-04-0620
Original Equipment Manufacturer ?
  Works with your model  2781-059!
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(3 rated repairs) ?
  Works with your model   2781-059!

Product Description

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This is an authentic manufacturer approved replacement item. It is commonly used on Milwaukee angle grinders. This sealed metal bearing helps to secure armature while allowing it to spin freely. Includes one (1) bearing per order. To complete this repair you would need a screwdriver and pliers. • Remove the side handle • Remove the guard • Remove the handle • Separate the grinder • Disengage the brushes • Remove the fan • Remove the gear case • Remove the armature • Remove the pinion gear • Remove the front bearing • Install the new bearing • Reassemble unit and test it

Troubleshooting

This part works with the following brands:
  • Milwaukee
This part works with the following products:
  • Angle Grinder
  • Sander Grinder

Videos For installing this part.

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Replacing your Ball Bearing

Customer Part Reviews

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Customer Repair Instructions

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A Bit Difficult 

30 - 60 mins 

(3 rated repairs) ?
  • 1
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Armature bearings had failed.

John from Levittown, Pennsylvania

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
1) Removed the side cover screws and split the two halves.
2) Unscrewed the 4 head screws to remove head.
3) Unscrewed armature bolt to remove drive gear and release armature.
4) Replaced armature bearings.
5) Put armature back in head, install drive gear and retaining nut and grease gears.
6) Screw down he ad plate.
7) Replaced brushes and then refit side covers.
Then tested.
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Bad ball bearings

Jimmy from montebello, California

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
02-04-0620
Just removed the grinder casing with a screwdriver. And it all came apart to replace the ball bearing.
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Bearing wore out

MICHAEL from colts neck, New Jersey

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Wrench set
Parts Used:
02-04-0620
As with most things these days you have to have the right tool.
Not much to the repair if you have a set of Torx bits and a gear puller. You can get away without the puller but you risk damaging other parts as you remove the old bearing.
To repair, remove the head by taking out the 4 Torx screws. Remove nut on end of armature along with gear and washer. Put small puller on armature and remove whats left of your bearing... Get rid of any stray pieces in the head. Place new bearing on armature and push into place. Put washer and gear back then tighten nut to seat bearing. Put head back on and you\'re done.
Probably the trickiest part is if you pull out the entire armature as I did to check the second bearing and then have to compress the springs that hold the brushes in place. You don\'t want to crack either of them and it\'s a very tight space.
This was the first time I\'ve needed to repair my Milwaukee grinder and it took probably 40 minutes. The next time it will take 10.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP10116825
Manufacturer Part Number: 02-04-0620
Brand Model Number Description
Milwaukee 0240-20 Electric Drill - 3/8" (10Mm)
Milwaukee 2780-20 Angle Grinder - Angle Grinder
Milwaukee 2780-21 Angle Grinder - Angle Grinder
Milwaukee 2780-22 Angle Grinder - M18 Fuel Angle Grinder with Paddle Switch and Lock-Off
Milwaukee 2780-22HD Angle Grinder - 2780-22hd (Serial F33a) M18 Fuel Angle Grinder With Paddle Switch And Lock-Off Parts
Milwaukee 2781-059 Angle Grinder - Angle Grinder
Milwaukee 2781-20 Angle Grinder - M18 Fuel Angle Grinder with Slide Switch and Lock-On
Milwaukee 2781-21 Angle Grinder - M18 Fuel Angle Grinder with Slide Switch and Lock-On
Milwaukee 2781-22 Angle Grinder - M18 Fuel Angle Grinder with Slide Switch and Lock-On
Milwaukee 2781-22HD Angle Grinder - 2781-22hd (Serial F32d) M18 Fuel Angle Grinder With Slide Switch And Lock-On Parts
Milwaukee 2783-20 Angle Grinder - Angle Grinder
Milwaukee 2785-20 Angle Grinder - M18 Fuel 7 Inch /9 Inch Hp Large Angle Grinder Bare
Milwaukee 4274-21 Electric Drill - Electric Drill
Milwaukee 6116-30 Sander Grinder - Grinder
Milwaukee 6116-31 Sander Grinder - Grinder
Milwaukee 6116-33 Sander Grinder - Grinder
Milwaukee 6117-30 Angle Grinder - 5" HP Angle Grinder With Paddle Switch
Milwaukee 6117-31 Angle Grinder - 5" HP Angle Grinder With Paddle Switch
Milwaukee 6117-31B Angle Grinder - 6117-31b (C93a) 5 Hp Angle Grinder With Paddle Switch And Brake Parts
Milwaukee 6117-33 Angle Grinder - 5" HP Angle Grinder With Slide Switch
Milwaukee 6117-33D Angle Grinder - 5" HP Angle Grinder With Slide Switch
Milwaukee 6117-59 Angle Grinder - 6117-59 (D12a) 125mm Hp Angle Grinder With Slide Switch And Speed Dial Parts
Milwaukee 6117-59A Angle Grinder - 6117-59a (D71a) 125mm Hp Angle Grinder With Slide Switch And Speed Dial Parts
Milwaukee 6121-30 Angle Grinder - 4.5" Compact Rat-Tail Angle Grinder
Milwaukee 6121-31 Angle Grinder - 4.5" Compact Rat-Tail Angle Grinder
Milwaukee 6121-31A Angle Grinder - 5" Compact Rat-Tail Angle Grinder
Milwaukee 6122-30 Sander Grinder - Grinder
Milwaukee 6122-30A Angle Grinder - Angle Grinder
Milwaukee 6122-31 Sander Grinder - Grinder
Milwaukee 6122-31A Angle Grinder - Angle Grinder