Easy
15-30 minutes
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, Porter Cable
Part Number: N400905
$4.99
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 57 machines
DeWALT
DW303M Type 1 Heavy Duty Reciprocating Saw View Diagrams & Manuals
DW303M Type 2 Heavy Duty Reciprocating Saw View Diagrams & Manuals
DW303M Type 3 Heavy Duty Reciprocating Saw View Diagrams & Manuals
DW304P Type 1 Reciprocating Saw View Diagrams & Manuals
DW303MB 9.0A Keyless Reciprocating Saw View Diagrams & Manuals
DW304PK Type 1 Reciprocating Saw Kit View Diagrams & Manuals
DW304PK Type 2 Reciprocating Saw Kit View Diagrams & Manuals
DW304PKAR Type 1 Reciprocating Saw View Diagrams & Manuals
DW304PKAR Type 3 Reciprocating Saw View Diagrams & Manuals
DWE305 (Type 1) 12A Corded Reciprocating Saw View Diagrams & Manuals
DWE305 (Type 2) 12A Corded Reciprocating Saw View Diagrams & Manuals
DW303MC (Type 3) Recip Saw View Diagrams & Manuals
DW303MC (Type 4) Recip Saw View Diagrams & Manuals
DW303MK (Type 1) Reciprocating Saw View Diagrams & Manuals
DW303MK (Type 2) Reciprocating Saw View Diagrams & Manuals
DW303MK (Type 3) Reciprocating Saw View Diagrams & Manuals
DW303MKB2 (Type 1) Reciprocating Saw Keyless View Diagrams & Manuals
DW303MKB2 (Type 2) Reciprocating Saw Keyless View Diagrams & Manuals
DW303MKBR (Type 1) Reciprocating Saw Keyless View Diagrams & Manuals
DW303MKBR (Type 2) Reciprocating Saw Keyless View Diagrams & Manuals
DWE304 (Type 1) 10amp Reciprocat Saw View Diagrams & Manuals
DWE304 (Type 2) 10amp Reciprocat Saw View Diagrams & Manuals
DWE304 (Type 3) 10amp Reciprocat Saw View Diagrams & Manuals
DWE305K (Type 1) 12 Amp Reciproc Saw View Diagrams & Manuals
DW303MB (Type 3) Heavy Duty Recip Saw Power Tool View Diagrams & Manuals
DW304PK-B2 (Type 2) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-B2 (Type 3) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-B2 (Type 4) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-B2 (Type 5) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-BR (Type 1) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-BR (Type 2) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-BR (Type 3) Cutsaw Power Tool View Diagrams & Manuals
DW304PK-BR (Type 4) Cutsaw Power Tool View Diagrams & Manuals
DW304PK (Type 3) Cutsaw Power Tool View Diagrams & Manuals
DW304PK (Type 4) Cutsaw Power Tool View Diagrams & Manuals
DW304PKAR (Type 4) Cutsaw Power Tool View Diagrams & Manuals
DW304PKAR (Type 5) Cutsaw Power Tool View Diagrams & Manuals
Black and Decker
RS450 Type 1 Reciprocating Saw View Diagrams & Manuals
RS500 Type 1 Reciprocating Saw View Diagrams & Manuals
FS9500RS Type 1 Reciprocating Saw View Diagrams & Manuals
RS600 Type 1 Reciprocating Saw View Diagrams & Manuals
FS8500RS Type 1 Reciprocating Saw View Diagrams & Manuals
27391 Type 2 9.0 Amp Keyless Reciprocating Saw View Diagrams & Manuals
27391 Type 4 9.0 Amp Keyless Reciprocating Saw View Diagrams & Manuals
TV910 Type 1 Variable Speed Reciprocating Saw View Diagrams & Manuals
RS601 Type 1 HPP Reciprocating Saw View Diagrams & Manuals
QP500 Type 1 8 Amp Variable Speed Reciprocating Saw View Diagrams & Manuals
QP5000 Type 1 HPP Quantum Pro Reciprocating Saw View Diagrams & Manuals
27391 Type 1 9.0 Amp Keyless Reciprocating Saw View Diagrams & Manuals
26600 Type 1 Variable Speed Reciprocating Saw View Diagrams & Manuals
RS500K Type 1 VS Reciprocating Saw View Diagrams & Manuals
RS600K Type 1 Reciprocating Saw View Diagrams & Manuals
TV910K (Type 1) Vs Recip Saw Kit View Diagrams & Manuals
QP500K (Type 1) 8 Amp Vs Recip Saw View Diagrams & Manuals
RS500K 1 (Type 4) 7.5 Amp Recip Saw W/Stora View Diagrams & Manuals
RS601K (Type 1) B&d Hpp Reciprocating Saw View Diagrams & Manuals
Porter Cable
PC750RS Type 1 7.5 Amp Reciprocating Saw View Diagrams & Manuals
Show More Compatible Models
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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Dewalt Reciprocating Saw Repair
The parts I ordered were received in good condition and within an acceptable time.
My saw is now working great.
Guest -
April 15, 2021
Verified Purchase
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t days ago
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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.
Worn shaft and bearing.
John - March 8, 2024
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
Removed damaged parts and replaced with the new ones.
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Lost the ball bearing that holds the blade in place
Wade - August 1, 2022
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
First let me say that the part for my saw (DW303M pn 5140006-35) was listed as Obsolete/discontinued.
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.
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.
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The Shaft had excessive play due, to worn Bearing, causing difficulty when changing Blades.
Carl - April 15, 2021
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, T-20 & T-25 Torx Driver
Removed head on saw using Phillips head Screw Driver and T-20 Torx Driver. Removed Rubber Grip by sliding it off the end of the Saw exposing the cover that that holds the Shaft and Bearing in place. Used T-25 & T-20 Torx Drivers to remove cover, replaced shaft and Bearing, lubricated with grease and installed new parts in reverse order. Be careful to put the screws in the correct location. The two screws that hold the cover down over the bearing are shorter than the rest. If wrong screws are used, they will not tighten down on the cover. This could cause the Bearing to have excessive movement and wear. .
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Reciprocating arm/shaft had too much play and the blade holder would no longer hold the blade tight.
William - May 2, 2017
Tool Type
Reciprocating Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Offset screw driver
After seeing how the old parts came out, I carefully installed all the new parts with new grease and the new screws. The only special instructions I will add is don't let friends that have no respect for tools, use them.
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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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