This is a genuine manufacturer-sourced part which is for Makita random orbit sanders. The bearing box holds the bearing in position, over time it may wear out and begin to fail eventually requiring a replacement to maintain peak performance. This high-quality item is made of durable metal and is sold individually, keep in mind the hardware to secure it is sold separately.
Bearing Box 318304-9
OEM part for: Makita
Part Number: 318304-9
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Compatibility
This Bearing Box will fit the following 13 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Makita
Show More Compatible ModelsThis item works with the following types of products:
- Sander Parts
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Does this fit my product?Questions & Answers for Bearing Box
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.
Sander spun too fast
Tool Type
Sander
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Power Drill
Removed old sander box cover and bearing box
Installed new bearing in new bearing box ( It was a tight fit. )
Reinstalled new bearing box and cover.
Reinstalled new sanding pad with a new screw and two old screws.
Makita orbital sander spinning the pad at high speed
Tool Type
Sander
Difficulty
Medium
Time
Less than 15 minutes
Tools Used
Screwdriver, Rubber mallet
Parts Used
1) Parts: I recommend buying a new bearing and a bearing box as getting the bearing out of the old box without damaging it is tough and the bearing box is a pretty cheap part.
2) Remove the three screws for the pad of the sander. Set these aside with the pad.
3) Remove the two screws for the base of the sander body and then set these aside with the two halves of the base.
4) Take the flexible plastic brake off and set it aside.
5) Remove the screw and washer holding the bearing box and bearing on the drive shaft.
6) Replace the bearing and/or bearing box
7) Go backwards through steps 5 -> 2 to reassemble the sander. (Be sure you seat the brake so that the rubber nubs sticking up around the edge are inset into the base of the sander as you put that back on)
Bearing failure
Tool Type
Sander
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
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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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.