It is a genuine OEM replacement part that is utilized with reciprocating saws. This special bearing helps to support and guide the reciprocating shaft, for correct location and use of this item make sure to check your tools parts diagrams. It is made from durable metal and it is sold individually.
Special Bearing N400905
OEM part for: DeWALT, Black and Decker
Part Number: N400905
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Compatibility
This Special Bearing will fit the following 68 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Reciprocating Saw Parts
- Saw Parts
This part replaces obsolete part #: 604644-01
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Does this fit my product?Questions & Answers for Special Bearing
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.
Worn shaft and bearing.
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
Lost the ball bearing that holds the blade in place
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
I found that the part for the (DW304P pn302139) is basically the same part.
The only difference is that the shaft for the DW303M has only one position for the blade that is vertical with the saw.
The DW304P has two slots for the blade to fit both Vertical and Horizontal.
Lucky that I had both of these saws and was able to compare before I purchased the part for the DW304P to fit my DW 303M saw.
I only wish that they would have had a foot note stating that there was an alternative part. This would have saved me some time. Other than that the replacement was very easy. Don't forget to grease it well while you have it apart.
The Shaft had excessive play due, to worn Bearing, causing difficulty when changing Blades.
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, T-20 & T-25 Torx Driver
Reciprocating arm/shaft had too much play and the blade holder would no longer hold the blade tight.
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Offset screw driver
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.