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Repair Parts Home    Power Tool Parts    DeWALT Parts    DeWALT Sander / Polisher Parts    DeWALT DW421 TYPE 1 Random Orbit Sander Parts
DeWALT DW421 TYPE 1 Random Orbit Sander dewalt logo

 DeWALT DW421 TYPE 1 Random Orbit Sander Parts

Page A

 Fig # Part # Img Part Name Availability Price Qty
1578863-03
Armature With Bearings Obsolete - Not Available
Discontinued
$0.00N/A
2807254-08
Field Obsolete - Not Available
Discontinued
$0.00N/A
3445861-25
Carbon Brush (Sold Individually)
Note: Sold Individually
In stock
25+ available
 $5.44
4445860-00
Brush Spring
In stock
25+ available
 $3.00
5449899-05
Brush Ring, Brushes Sold Seperately
In stock
8 available
 $16.18
6144960-00
Switch (On-Off)
In stock
25+ available
 $4.61
7330072-97
Power Cord - 10', 18 Gauge, 2-Wire -Terminals not included
In stock
25+ available
 $20.39
8330003-17
Ball Bearing (6000DU)
In stock
25+ available
 $10.32
9330003-03
Ball Bearing
In stock
25+ available
 $5.10
10616020-00
Fan
In stock
4 available
 $3.42
11380382-00
Clamshell Set
Ships in 8 - 13 business days
 $18.07
13330005-01
Cord Protector
In stock
25+ available
 $4.75
14380414-00
Clamp,Cord
In stock
9 available
 $1.28
15285252-00
Cap and Screws
In stock
2 available
 $6.56
16144989-00
Lead Assembly
In stock
1 available
 $1.12
Fig #Part #ImgPart NameAvailabilityPrice
17445964-00
Receptacle
In stock
25+ available
 $1.12
18825209-00
Terminal
In stock
25+ available
 $1.11
19610078-00
Clamshell Shroud
In stock
2 available
 $7.63
21286181-00
Retainer
In stock
25 available
 $6.23
22603637-00
Bearing Retainer (Self Tapping)
In stock
25+ available
 $2.57
23330003-13
Ball Bearing (6202)
In stock
25+ available
 $5.11
24-A151281-08
5" Sander Pad Hook and Loop(Velcro)
In stock
25+ available
 $19.30
24-B151662-00
Sander Pad 5" PSA No Vacuum Holes
In stock
25+ available
 $17.64
24-C151281-09
5" PSA-Adhesive Sanding Pad 8 Vacuum Holes
In stock
25+ available
 $19.30
25151549-00
Baffle
Ships in 8 - 13 business days
 $3.37
26151553-00
Dust Seal/Brake
In stock
25+ available
 $5.97
27144983-07
Cover,Switch
In stock
25+ available
 $1.87
28386856-00
Dust Bag Asm
In stock
14 available
 $15.02
29386856-00
Dust Bag Asm
In stock
14 available
 $15.02
3056194-00
O-Ring
In stock
21 available
 $1.12
Fig #Part #ImgPart NameAvailabilityPrice
608354-00SV
Dust Bag
In stock
25+ available
 $10.20
152365-00
Ring,O
In stock
18 available
 $1.04
32700871-00
O Ring
In stock
4 available
 $6.63
33330019-11
Screw
In stock
25+ available
 $1.12
34098012-11
Screw,Machine
In stock
25+ available
 $1.12
35146929-01
Screw
In stock
25+ available
 $1.11
36330019-02
Screw,Plastite
In stock
25+ available
 $1.11
37330019-08
Screw
In stock
2 available
 $1.12
38330019-03
Screw
In stock
25+ available
 $1.12
39330019-11
Screw
In stock
25+ available
 $1.12
39A330019-13
Screw,M4X19
In stock
25+ available
 $1.12
40151652-00
Washer,Cone
In stock
25+ available
 $1.28
41398399-00
Ident. Label
In stock
2 available
 $1.12
43151669-00
Ring,Retaining
In stock
2 available
 $1.28
44144956-00
Nut
Ships in 8 - 13 business days
 $1.12
Fig #Part #ImgPart NameAvailabilityPrice
50608354-00SV
Dust Bag
In stock
25+ available
 $10.20
861625383-00
Kit Box
In stock
2 available
 $58.12

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Sander Parts  Polisher Parts

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Repair Stories
Symptom:
Worn Brushes
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Entry Date:2013-12-13 14:40:45
6 of 7 customers found these instructions helpful
Brushes were worn out
Sander would only run for 2-3 minutes and shut off. I was not sure if it was brushes, but ereplacement description sounded like it. Old brushes did not look badly worn. Take off top plate on to of sander (2 screws); use compressed air to blow out dust and accumulated sawdust; find brushes and associated wire connection on each side of armature; using pliers, gently pull up on brass end of wire where it enters connector along outside edge of housing (can follow wire easily from end of brushes - connection just pulls straight up out of slot where brass wire end goes into slot; now push coil spring aside that holds each brush against armature; once coil spring clears opening where brush inserts - just slide old brush and connected wire out. Brush and wire assembly is about 4 inches long. Reverse procedure putting the new brushes back in. It is a little tricky to slide the new carbon brush into the plastic slot that aligns it with the armature since the rectangular brush and rectangular slot have to line up in the tight space - so check that the coil spring is completely out of the way of the slot without breaking off the coil spring (it is pretty resilient). Using needle nose pliers, grip to new wire by the brass end and slide it down into the connector where the old one came out - be sure it goes all the way down. Check that all of the wires are laying back into the plastic groves of the inner housing and out of the way of the top plate screw holes and screw the top plate back on. Surprising how much better new brushes make your sander run like new - I just about threw it away before trying this simple and relatively cheap fix.
Did these repair instructions help you?
Symptom:
Worn Part
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Entry Date:2013-10-14 17:01:36
4 of 6 customers found these instructions helpful
Pad would not stop spinning, and had to much vibration so I replaced the bearing. I should have replaced the 151553-00 dust seal/brake, but didn't. I have ordered that and will replace when it gets
Remove three screws that retain the pad, and remove the center screw that holds the bearing. Split the bearing retainer, remove bearing, install new bearing and assemble. Quite simple.
Did these repair instructions help you?
Discussion
Discussion for the DeWALT DW421 TYPE 1 Random Orbit Sander

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Accessories
Accessories for the DW421

Sandpaper Discs:
See more sandpaper discs 
DW4309
25-Pack Hook and Loop 80-Grit 5" 8 Vac. Sandpaper Discs
$22.55

DW4311
25-Pack Hook and Loop 120-Grit 5" 8 Vac. Sandpaper Discs
$20.49

DW4314
25-Pack Hook and Loop 220-Grit 5" 8 Vac. Sandpaper Discs
$20.49

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