Medium
More than 2 hours
This part is provided by the original manufacturer for Milwaukee power tools. The metal bearing is used to prevent friction between moving parts, and usually goes inside a gear. The item includes one needle bearing, and please be aware any associated parts are sold separately. Please refer to your models parts diagram for any additional parts.
Needle Bearing 02-50-2423
OEM part for: Milwaukee
Part Number: 02-50-2423
$5.19
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Ships within 1 business day 
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Compatibility
This Needle Bearing will fit the following 324 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Milwaukee
Show More Compatible ModelsThis item works with the following types of products:
- Grinder Parts
- Sander Parts
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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.
bearings bad and needed replacement
Tom - July 1, 2020
Tool Type
Circular Saw
Difficulty
Hard
Time
More than 2 hours
Tools Used
Screwdriver, bearing puller, snap ring pliers, wooden dowel, hammer
1. used snap ring pliers to remove external snap ring holding blade guard.
2. removed 4 phillips screws holding gearbox lid.
3. tapped out sealed bearing in gearbox lid using wooden dowel and hammer.
4. removed 4 long phillips screws holding gearbox body.
5. removed needle bearing from gearbox using greasy rag trick. (google it. easier if you
watch. ( it works! i used strips of blue shop paper towel...) removed inner snap ring and
bearing.
6. removed brush covers and brushes. moved gearbox aside and removed commutator
and cardboard insulator.
7. used 3 armed bearing puller to remove bearings from both ends.
8. with commutator out, removed grounding wire screw from gearbox.
9. cleaned all parts in mineral spirits. cleaned contacts on commutator with 1200 grit
emery cloth
10. replaced bearings on commutator; tapped small bearing on with wooden dowel and
hammer. tapped large bearing with 3/4" pipe and hammer, touching only inner bearing
race.
11. replaced brush covers and brushes. replaced commutator and cardboard insulator
12. reattached ground wire to gearbox. reattached gearbox.
13. tapped needle bearing in socket with wooden dowel.
14. filled gearbox with grease.
15. pressed bearing into gearbox lid with fingers! replaced inner snap ring. added more
grease on lid.
16. replaced gearbox lid and screws.
17. replaced blade guard and outer snap ring. replaced blade.
this is how i remember it. your mileage may vary...
2. removed 4 phillips screws holding gearbox lid.
3. tapped out sealed bearing in gearbox lid using wooden dowel and hammer.
4. removed 4 long phillips screws holding gearbox body.
5. removed needle bearing from gearbox using greasy rag trick. (google it. easier if you
watch. ( it works! i used strips of blue shop paper towel...) removed inner snap ring and
bearing.
6. removed brush covers and brushes. moved gearbox aside and removed commutator
and cardboard insulator.
7. used 3 armed bearing puller to remove bearings from both ends.
8. with commutator out, removed grounding wire screw from gearbox.
9. cleaned all parts in mineral spirits. cleaned contacts on commutator with 1200 grit
emery cloth
10. replaced bearings on commutator; tapped small bearing on with wooden dowel and
hammer. tapped large bearing with 3/4" pipe and hammer, touching only inner bearing
race.
11. replaced brush covers and brushes. replaced commutator and cardboard insulator
12. reattached ground wire to gearbox. reattached gearbox.
13. tapped needle bearing in socket with wooden dowel.
14. filled gearbox with grease.
15. pressed bearing into gearbox lid with fingers! replaced inner snap ring. added more
grease on lid.
16. replaced gearbox lid and screws.
17. replaced blade guard and outer snap ring. replaced blade.
this is how i remember it. your mileage may vary...
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Noisey bearings, damaged cord
Richard - June 28, 2017
Tool Type
Circular Saw
Difficulty
Easy
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, Torq drivers, T-20, T-25
Completely disassembled saw, cleaned all of the parts with mineral spirits and some degreaser soap and water. Bearing removal was the most time consuming, but having a couple of years working in a electric motor repair shop helped ease the job. I'm retired and every day is Saturday, and you do what ever you want on Saturday, working on the project whenever ya wanna. This job was for a friend who makes his living remodeling old houses. The on line parts list and schemes are also a benefit. The saw was a Milwaukee and the model was one of the better quality ones which does help make it easier. These are fun jobs I enjoy doing, working with my hands. Will be 79 on September 11. Helped family marry off oldest grandson June 17 in East Jordan, MI and will be in Bozeman MT over Labor day week end to marry off youngest grandson. So repairing tools comes in between. Do appreciate good service from ereplacementparts.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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