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DeWALT DW421 TYPE 1 Random Orbit Sander

DeWALT DW421 TYPE 1 Random Orbit Sander Parts

Page A
 Fig #
1
Armature With Bearings
 
No Longer Available [ More Info ]

Part Number: 578863-03

Discontinued

Not Available

2
Field
 
No Longer Available [ More Info ]

Part Number: 807254-08

Discontinued

Not Available

3
Carbon Brush
 $6.46

Part Number: 445861-25

In Stock, 25+ Available

Ships within 1 business day
Note: Sold Individually
 $6.46
4
Brush Spring
 $3.99

Part Number: 445860-00

In Stock, 25+ Available

Ships within 1 business day
 $3.99
5
Brush Ring, Brushes Sold Seperately
 $19.23

Part Number: 449899-05

In Stock, 3 Available

Ships within 1 business day
Note: Inc 4
 $19.23
6
On-Off Switch
 $5.50

Part Number: 144960-00

In Stock, 25+ Available

Ships within 1 business day
Note: Npp
 $5.50
7
Power Cord (10-Foot)
 $24.22

Part Number: 330072-97

In Stock, 25+ Available

Ships within 1 business day
Note: 120v
 $24.22
8
Ball Bearing
 $12.26

Part Number: 330003-17

In Stock, 17 Available

Ships within 1 business day
Note: 7311 Offset Base
 $12.26
9
Ball Bearing
 $5.37

Part Number: 605040-05

In Stock, 15 Available

Ships within 1 business day
Note: Id 8 Od 22 X 7mm
 $5.37
10
Fan
 $4.06

Part Number: 616020-00

In Stock, 22 Available

Ships within 1 business day
 $4.06
11
Clamshell Set
 
No Longer Available [ More Info ]

Part Number: 380382-00

Discontinued

Not Available

13
Cord Protector
 $5.64

Part Number: 330005-01

In Stock, 25+ Available

Ships within 1 business day
Note: Npp
 $5.64
14
Clamp,Cord
 $1.99

Part Number: 380414-00

In Stock, 1 Available

Ships within 1 business day
 $1.99
15
Cap and Screws
 $7.80

Part Number: 285252-00

In Stock, 5 Available

Ships within 1 business day
 $7.80
16
Lead Assembly
 $2.99

Part Number: 144989-00

In Stock, 5 Available

Ships within 1 business day
Note: Black, 20ga
 $2.99
17
Receptacle
 $2.99

Part Number: 445964-00

In Stock, 22 Available

Ships within 1 business day
 $2.99
18
Terminal
 $2.99

Part Number: 825209-00

In Stock, 25+ Available

Ships within 1 business day
 $2.99
19
Clamshell Shroud
 $9.08

Part Number: 610078-00

In Stock, 5 Available

Ships within 1 business day
 $9.08
21
Retainer ( Includes Self Tapping Screws)
 $7.40

Part Number: 286181-00

In Stock, 20 Available

Ships within 1 business day
Note: Inc. 35
 $7.40
22
Bearing Retainer
 $3.99

Part Number: 603637-00

In Stock, 25+ Available

Ships within 1 business day
 $3.99
23
Ball Bearing
 $6.07

Part Number: 330003-13

In Stock, 25+ Available

Ships within 1 business day
Note: Npp
 $6.07
24-A
Hook and Loop Sander Pad
 $22.93

Part Number: 151281-08

In Stock, 25+ Available

Ships within 1 business day
Note: H&l, 5in, Medium
 $22.93
24-B
Sander Pad (5-Inch)
 $20.97

Part Number: 151662-00

In Stock, 25+ Available

Ships within 1 business day
 $20.97
24-C
Sanding Pad For Adhesive Back (5-inch)
 $22.93

Part Number: 151281-09

In Stock, 25+ Available

Ships within 1 business day
Note: This Pad Accepts Adhesive Backed Paper. There Is No Adhesive On The Pad
 $22.93
25
Baffle
 $4.00

Part Number: 151549-00

In Stock, 14 Available

Ships within 1 business day
 $4.00
26
Dust Seal
 $7.10

Part Number: 151553-00

In Stock, 25+ Available

Ships within 1 business day
 $7.10
27
Switch Cover
 $3.99

Part Number: 144983-07

In Stock, 25+ Available

Ships within 1 business day
 $3.99
28
Dust Bag Asm
 $17.84

Part Number: 386856-00

In Stock, 15 Available

Ships within 1 business day
 $17.84
29
Dust Bag Asm
 $17.84

Part Number: 386856-00

In Stock, 15 Available

Ships within 1 business day
 $17.84
30
O-Ring
 $3.99

Part Number: 56194-00

In Stock, 5 Available

Ships within 1 business day
 $3.99
31
Ring,O
 
No Longer Available [ More Info ]

Part Number: 152365-00

Discontinued

Not Available

31
Dust Bag
 $12.12

Part Number: 608354-00SV

In Stock, 25+ Available

Ships within 1 business day
Note: Incl. 69
 $12.12
32
O Ring
 $7.89

Part Number: 700871-00

In Stock, 3 Available

Ships within 1 business day
 $7.89
33
Screw
 $1.99

Part Number: 330019-11

In Stock, 12 Available

Ships within 1 business day
Note: M4.55x13 T20
 $1.99
34
Screw,Machine
 $2.99

Part Number: 098012-11

In Stock, 25+ Available

Ships within 1 business day
 $2.99
35
Screw
 $1.99

Part Number: 146929-01

In Stock, 25+ Available

Ships within 1 business day
Note: Thd Forming
 $1.99
36
Screw,Plastite
 $1.99

Part Number: 330019-02

In Stock, 25+ Available

Ships within 1 business day
Note: M3.63 X 13mm T15
 $1.99
37
Screw
 $1.99

Part Number: 330019-08

Ships In 11 - 17 Business Days

Ships in 11 - 17 business days
Note: M3.63 X 45mm T15
 $1.99
38
Screw
 $2.99

Part Number: 330019-03

In Stock, 18 Available

Ships within 1 business day
Note: M3.63 X 16mm T15
 $2.99
39
Screw
 $1.99

Part Number: 330019-11

In Stock, 12 Available

Ships within 1 business day
Note: M4.55x13 T20
 $1.99
39A
Torx Screw
 $1.99

Part Number: 330019-13

In Stock, 25+ Available

Ships within 1 business day
Note: M4 X 19 T20
 $1.99
40
Washer,Cone
 $2.99

Part Number: 151652-00

In Stock, 22 Available

Ships within 1 business day
 $2.99
41
Ident. Label
 $1.99

Part Number: 398399-00

In Stock, 3 Available

Ships within 1 business day
 $1.99
43
Ring,Retaining
 $1.99

Part Number: 151669-00

In Stock, 5 Available

Ships within 1 business day
 $1.99
44
Nut
 $1.99

Part Number: 144956-00

Ships In 11 - 17 Business Days

Ships in 11 - 17 business days
 $1.99
50
Dust Bag
 $12.12

Part Number: 608354-00SV

In Stock, 25+ Available

Ships within 1 business day
Note: Incl. 69
 $12.12
861
Kit Box
 
No Longer Available [ More Info ]

Part Number: 625383-00

Discontinued

Not Available

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Accessories
Accessories for the DeWALT DW421

Questions & Answers

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Discussion
Discussion for the DeWALT DW421 TYPE 1 Random Orbit Sander

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.
Question: Dewalt Dw 421 Sander

1276371

The sanding pad on my DEWALT DW 421 Palm Sander does not spin when pressure is applied to it. The motor runs fine. It is if the "transmission" is broke but the motor is fine. The local service center wants more money to diagnois and fix it than the cost of a new one. I have dismantled it and nothing seems to be broken. Any advice on what is broken.
Hi,
You will need to replace the following:330003-13 Ball Bearing (6202),151553-00 Dust Seal/Brake.But first remove the old parts and make sure that your armature shaft is not broken.The 421 was known to have some armature breakage.If the armature is ok and spins freely then the replacement parts should fix your problem.The parts your replacing are normal wearable parts. Hope that helps.Good luck.
Tinker
Question: Attaching Dust Bag To DW421 Sand...

AZMort

I had a hard plastic dust collector and I am replacing it with the dust bag. Is the old male end of the dust bag on the sander to be removed?
WJA
Hello AZMort,

Which dust bag are you replacing there are two that you can choose from.
Question: Power Cords,type 1 Dewalt Orbit...

win38mag

Dewalt type 1 orbital sander

why is it that the dewalt brushes come with the terminal ends on and the power cords , which require 2 different ends don't ? I thought I was buying a direct replacement cord !! It/ I ordered 2 , they are not installable as they are !! looking closer at the picture I see the ends , and looking at the existing cord , one needs a special tool to install those ends

I guess my point is , that if your going to sell a replacement cord it should be complete and ready to install, now I got to wait another week for the damn ends to get here !!
WJA
Hello win38mag,

We are sorry for the problems you are having. I will have the description of the cord fixed. Saying -Terminals not included-

-WJA
Fortunately for you these ridiculously high priced terminals are available here. You need Numbers 17 and 18 on the above list. I just ordered them myself 2 days ago. The actual DeWalt part numbers are #17 is 445964-00 and #18 is825209-00. Best Wishes!
Question: Dust Bag For Dw421 Sander

bud660

new bag wont fit ? trying to replace older hard plastic dust bag with part #60835-00sv
WJA
Hello bud660,

There are 2 different types of the Dewalt DW421 sander. check your type number to see if you have the right collector.

-WJA
Question: Free Wheeling Sanding Pad

jnphil

Hello,
I replaced the pad and the dust/brake shield but the pad still spins at the motors RPM. What else could cause this?
Hi, You will need to replace Ball Bearing (6202DU) Part Number: 330003-13.Hope this helps.
Tinker
Question: Stops When Contacting Workpiece.

randamadee

i have the same problem as john, and no one has answered his concern. sander spins fine when turned on, but as soon as it contacts the workpiece it just stops spinning. any ideas what parts i need to replace.
Hi, Replace bearing 330003-13.That is the only real thing that would cause it to stop when you put it to the work surface.Hope that helps.
All the best
Tinker
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