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Milwaukee 5321-21 (SER 354C) 1-1/2 milwaukee logo

 Milwaukee 5321-21 (SER 354C) 1-1/2" (40mm) Rotary Hammer Parts

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 Fig # Img Part Name Availability Price
1Ball Bearing
Part #: 02-04-0845
In stock
25+ available
 $5.24
Add To Cart
3Fan Assembly
Part #: 22-84-0875
In stock
4 available
 $13.40
Add To Cart
*4Bearing Ball 12X28X8 2 Seals
Part #: 02-04-1206
In stock
2 available
 $6.21
Add To Cart
8Pivot Nut
Part #: 05-59-0100
Ships in 9 - 15 business days
 $0.74
Add To Cart
10Pivot Bolt
Part #: 05-77-0100
Ships in 9 - 15 business days
 $1.03
Add To Cart
11Screw, Metric,Pn HD (PT)
Part #: 05-88-3650
In stock
2 available
 $0.68
Add To Cart
12Screw, Metric, PN HD (PT)
Part #: 05-88-5910
In stock
4 available
 $0.68
Add To Cart
13Screw, Metric,Pn HD (PT)
Part #: 05-88-5930
Ships in 9 - 15 business days
 $0.68
Add To Cart
14Screw, Metric,Pn HD (PT)
Part #: 05-88-5940
In stock
5 available
 $0.68
Add To Cart
15Screw, Metric,Pn HD (PT-DG)
Part #: 05-88-9920
In stock
2 available
 $0.68
Add To Cart
16Screw, Metric,Pn HD (PT-DG)
Part #: 05-88-9930
Ships in 9 - 15 business days
 $1.03
Add To Cart
17Screw, Metric,Pn HD (PT-DG)
Part #: 05-88-9940
In stock
3 available
 $1.60
Add To Cart
19
Light Pipe
Part #: 31-01-0065
Ships in 9 - 15 business days
 $0.86
Add To Cart
221/4-20 X 2-1/2 Pan HD SC
Part #: 06-81-1805
Ships in 9 - 15 business days
 $2.45
Add To Cart
238-16X2-1/2" Pan Plast Torx
Part #: 06-82-7375
In stock
7 available
 $0.68
Add To Cart
Fig #ImgPart NameAvailabilityPrice
26M5 X 2.24 X 18 Plastite Screw
Part #: 06-95-6290
In stock
2 available
 $0.99
Add To Cart
27Thumbwheel, Numbered
Part #: 31-01-0035
In stock
2 available
 $3.08
Add To Cart
28
Service Nameplate
Part #: 12-20-5315
Ships in 9 - 15 business days
 $6.33
Add To Cart
*29Brush Card & Module SVC Kit
Part #: 14-20-1072
In stock
3 available
 $109.16
Add To Cart
*30Armature Kit Service
Part #: 16-30-0642
In stock
2 available
 $65.84
Add To Cart
31Service Field Atf
Part #: 18-30-1040
In stock
2 available
 $30.78
Add To Cart
*32Brush Card
Part #: 22-22-1531
In stock
3 available
 $31.81
Add To Cart
33Power Cord Blade Housing Receiver 120V
Part #: 22-56-0042
In stock
1 available
 $3.93
Add To Cart
3410' Cord Set (2 prongs)
Part #: 48-76-5010
In stock
25+ available
 $29.02
Add To Cart
35Switch
Part #: 23-66-2195
In stock
3 available
 $18.87
Add To Cart
37Crankcase Assembly
Part #: 28-14-2541
In stock
1 available
 $60.48
Add To Cart
42Upper Handle Mount
Part #: 31-10-0140
In stock
2 available
 $1.71
Add To Cart
46Module Cover Black
Part #: 31-15-0613
Ships in 9 - 15 business days
 $4.62
Add To Cart
47Motor Cover, Black
Part #: 31-15-2053
In stock
2 available
 $8.04
Add To Cart
50Handle Half Left, Red
Part #: 31-44-2211
In stock
2 available
 $4.62
Add To Cart
Fig #ImgPart NameAvailabilityPrice
51Right Handle Half-Red
Part #: 31-44-2221
In stock
2 available
 $4.10
Add To Cart
52
Motor Housing - Red
Part #: 31-50-5101
Ships in 9 - 15 business days
 $11.06
Add To Cart
53Rear Cover - Red
Part #: 31-55-0281
In stock
2 available
 $7.13
Add To Cart
*63O-Ring Obsolete - Not Available
Part #: 34-40-4215
Discontinued
N/A
66O-Ring
Part #: 34-40-4490
Ships in 9 - 15 business days
 $0.68
Add To Cart
86Rubber Bearing Cup
Part #: 42-96-0125
In stock
4 available
 $1.71
Add To Cart
*92Brush Kit
Part #: 22-18-1353
In stock
21 available
 $16.02
Add To Cart
93Spring Obsolete - Not Available
Part #: 40-50-2220
Discontinued
N/A
94Bellows
Part #: 43-87-0035
Ships in 9 - 15 business days
 $3.99
Add To Cart
95
Isolation Kit Obsolete - Not Available
Part #: 43-87-0060
Discontinued
N/A
100Handle Cushion
Part #: 44-52-0590
In stock
2 available
 $5.87
Add To Cart
122Thrust Washer
Part #: 45-88-8555
Ships in 9 - 15 business days
 $0.68
Add To Cart
123Seal Handle
Part #: 45-06-0535
Ships in 9 - 15 business days
 $0.68
Add To Cart
Page B
Click to expand
 Fig # Img Part Name Availability Price
2Ball Bearing
Part #: 02-04-0911
In stock
17 available
 $5.76
Add To Cart
5Bearing
Part #: 02-08-0640
In stock
2 available
 $6.61
Add To Cart
* 6Needle Bearing
Part #: 02-50-2755
Ships in 9 - 15 business days
 $3.82
Add To Cart
7.62 X .81 X .43 CD Opn
Part #: 02-50-4020
In stock
2 available
 $3.59
Add To Cart
9Socket HD. Cap Screw
Part #: 05-74-0625
Ships in 9 - 15 business days
 $2.00
Add To Cart
18Sleeve Split
Part #: 45-22-0680
In stock
4 available
 $0.68
Add To Cart
20Dowel Pin
Part #: 06-65-1660
Ships in 9 - 15 business days
 $0.68
Add To Cart
248-32 X 3/8" Pan HD. Tapt. Torx Sem
Part #: 06-82-8842
In stock
5 available
 $2.99
Add To Cart
25Screw, Metric,Pn HD (PT)
Part #: 05-88-9910
In stock
4 available
 $2.99
Add To Cart
36
Service Kit Nose
Part #: 14-46-1980
Ships in 9 - 15 business days
 $63.73
Add To Cart
38Gearcase Service Kit
Part #: 14-46-2565
In stock
2 available
 $22.23
Add To Cart
* 39Crankshaft Assembly
Part #: 14-09-0161
In stock
1 available
 $75.70
Add To Cart
43Cap, Cover
Part #: 31-12-0040
In stock
1 available
 $0.68
Add To Cart
44Screw Cap
Part #: 31-12-0185
In stock
2 available
 $0.68
Add To Cart
48Depth Rod Mount Assembly
Part #: 14-34-0551
In stock
1 available
 $9.69
Add To Cart
Fig #ImgPart NameAvailabilityPrice
49
Side Handle Housing
Part #: 31-44-2010
Ships in 9 - 15 business days
 $3.25
Add To Cart
54
Main Shroud - Red
Part #: 31-55-0301
Ships in 9 - 15 business days
 $8.78
Add To Cart
55Lock Ring
Part #: 31-58-0150
Ships in 9 - 15 business days
 $1.08
Add To Cart
56
Spacer
Part #: 31-86-0225
Ships in 9 - 15 business days
 $1.60
Add To Cart
* 57Clutch Service Assembly
Part #: 14-08-0211
In stock
2 available
 $48.28
Add To Cart
58Drive Gear
Part #: 32-30-0060
Ships in 9 - 15 business days
 $26.39
Add To Cart
62Crankcase Seal
Part #: 34-40-0240
In stock
1 available
 $1.25
Add To Cart
64O-Ring .139W X .796 I.D.
Part #: 34-40-4350
In stock
2 available
 $2.99
Add To Cart
65Cap Seal
Part #: 34-40-4475
In stock
2 available
 $5.64
Add To Cart
67O-Ring
Part #: 34-40-4500
In stock
2 available
 $0.68
Add To Cart
68O-Ring
Part #: 34-40-4510
In stock
2 available
 $4.28
Add To Cart
69O-Ring
Part #: 34-40-4520
In stock
1 available
 $3.82
Add To Cart
70O-Ring
Part #: 34-40-4530
Ships in 9 - 15 business days
 $0.68
Add To Cart
71Damping Washer
Part #: 34-40-4570
In stock
2 available
 $6.50
Add To Cart
72Retaining Ring
Part #: 34-60-2580
In stock
1 available
 $0.68
Add To Cart
Fig #ImgPart NameAvailabilityPrice
73Internal Retaining Ring
Part #: 34-80-5010
In stock
1 available
 $0.68
Add To Cart
74Spline Driver Obsolete - Not Available
Part #: 38-50-6300
Discontinued
N/A
75Spring
Part #: 40-50-0370
In stock
2 available
 $0.91
Add To Cart
76Spring
Part #: 40-50-0380
Ships in 9 - 15 business days
 $1.54
Add To Cart
80Spring, Compression
Part #: 40-50-0360
Ships in 9 - 15 business days
 $0.68
Add To Cart
81
Side Handle Band
Part #: 42-16-0155
Ships in 9 - 15 business days
 $3.36
Add To Cart
84Collar
Part #: 42-76-0740
In stock
2 available
 $2.74
Add To Cart
85Oil Seal
Part #: 45-06-0560
In stock
3 available
 $4.39
Add To Cart
87Barrel
Part #: 42-98-0260
In stock
2 available
 $80.83
Add To Cart
88Shift Disk Assembly
Part #: 14-14-0170
In stock
2 available
 $5.42
Add To Cart
89
Bitlock Washer
Part #: 45-88-1380
Ships in 9 - 15 business days
 $0.91
Add To Cart
90Side Handle Assembly Obsolete - Not Available
Part #: 14-34-0516
Discontinued
N/A
97Stepped Washer
Part #: 45-88-1070
Ships in 9 - 15 business days
 $1.60
Add To Cart
98Shift Knob Assembly
Part #: 14-34-0180
In stock
1 available
 $7.41
Add To Cart
101Wrist Pin
Part #: 44-60-1710
In stock
1 available
 $1.82
Add To Cart
Fig #ImgPart NameAvailabilityPrice
102Piston
Part #: 44-62-0230
In stock
1 available
 $13.11
Add To Cart
103
Ram
Part #: 44-82-0220
Backorder:
No ETA.
 $18.58
Add To Cart
104Bitlock Pin
Part #: 44-60-1640
In stock
2 available
 $2.34
Add To Cart
105Band Retainer
Part #: 44-86-0620
In stock
2 available
 $5.13
Add To Cart
106External Retaining Ring
Part #: 34-60-2590
In stock
2 available
 $2.34
Add To Cart
107Shift Ring
Part #: 44-90-0175
Ships in 9 - 15 business days
 $17.61
Add To Cart
108Depth Gauge Rod
Part #: 44-94-0165
In stock
6 available
 $1.94
Add To Cart
109Connecting Rod Assy
Part #: 44-94-0395
In stock
1 available
 $23.54
Add To Cart
111Dust Seal (Spline)
Part #: 45-06-0040
In stock
1 available
 $3.99
Add To Cart
112Felt Seal
Part #: 45-88-5176
In stock
1 available
 $0.68
Add To Cart
114Bearing Retaining Slug
Part #: 45-30-0060
In stock
2 available
 $0.68
Add To Cart
115
Spline Striker
Part #: 45-56-2570
Ships in 9 - 15 business days
 $14.71
Add To Cart
118Washer
Part #: 45-88-1565
Ships in 9 - 15 business days
 $0.86
Add To Cart
119Barrel Washer
Part #: 45-88-4005
Ships in 9 - 15 business days
 $9.52
Add To Cart
121Washer
Part #: 45-88-7170
In stock
2 available
 $1.31
Add To Cart
Fig #ImgPart NameAvailabilityPrice
124Wave Washer
Part #: 45-88-8730
In stock
1 available
 $1.43
Add To Cart
* 125
Breather Pad
Part #: 44-52-0041
Ships in 9 - 15 business days
 $0.68
Add To Cart
126Side Handle Assy Kit Obsolete - Not Available
Part #: 14-34-0585
Discontinued
N/A

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Discussion
Discussion for the Milwaukee 5321-21 (SER 354C) 1-1/2" (40mm) Rotary Hammer

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jddoyle
Question: Hammer Drill Slips

jddoyle

I have a 5321-21 Rotary Hammer Drill/Chisel. Sometimes it works just fine, but sometimes when you start to drill in concrete it will drill for a while and then start to slip. What could the problem be?
trailblazer
Reply: Hammer Drill Slips

trailblazer

I repair tools, and just from my experience I'd say its one of two things, either the shaft of your bit is wearing down, or possibly the gears inside the drill are wearing down. Hopefully that helps you!
I have a 3521-21 Rotary Hammer Drill and sometimes it works just fine and sometimes when you start to drill the bit will just stop. It seems like something is slipping. What could it be?
wildmanhunting
Question: Milwaukee Tool

wildmanhunting

have a 5321-21 large hammer drill will hammer but it won't turn even on highest setting won't that be the clutch service assem?
wildmanhunting
Reply: Milwaukee Tool

wildmanhunting

[QUOTE=wildmanhunting;8785]have a 5321-21 large hammer drill will hammer but it won't turn even on highest setting won't that be the clutch service assem? I have to fix this my self can't wait till the shop can get to it.
emo325
Reply: Milwaukee Tool

emo325

hello! i was looking at the schematic for the Milwaukee 5321-21 rotary hammer and you commented that it won't run even on the highest setting, this unit is equipped with a electronic module that controls the motor but before dismissing the module you must first check the power cord and switch for continuity and the the carbon for wear or damage and also inspect the armature and field. good luck!
trailblazer
Reply: Milwaukee Tool

trailblazer

does the hammer drill actually sound like it runs, and doesn't turn, or doesn't it sound like it runs at all?
trailblazer
Reply: Milwaukee Tool

trailblazer

Oh, didn't read that right. I guess it does run! You are right, it has something to do with that clutch assembly! Just tore one apart, and it possiblely might be worn down teeth on the clutch assembly.
Accessories
Accessories for the 5321-21

Adapters & Extensions:
See more adapters & extensions 
725797
Spline-1/2" -20 Thread Rotary Hammer Adapter
$23.98

725737
17-1/4" Spline-Hollow Core Bit Rotary Hammer Adapter
$46.61


Spline-1/2" Chuck Rotary Hammer Adapter
$46.24

fancyboxy