Miller Electric LMSW, MSW User Manual
These lightweight, air-cooled units are portable,
easy to operate, and provide a quick and effective
means for spot welding mild, galvanized or stainless
materials. These units are an excellent choice for
maintenance work, and for spot welding
applications that require portability and lower
amperage welding.
The MSW Models weld up to 1/8 in (3.2 mm) total
material thickness or two pieces of 20 gauge (1.8 mm)
galvanized metal. The LMSW Models weld up to
3/16 in (4.8 mm) total material thickness or two
pieces of 16 gauge (3 mm) galvanized metal.
“T” Models include a Timer Panel with a 0 to 5
second weld timer and power on/off switch, and
come with a 10 ft (3 m) input power cord and 10 ft
(3 m) interconnecting cord. The Timer Panel can
be mounted on the optional SWP-2 pedestal, or any
other convenient location.
Features
Accommodates a wide variety of tongs and tips
Hand lever locks tongs firmly on material,
ensures positive, accurate fit-up
Quick and easy adjustment for material thickness
Reversible for left- or right-hand operation
MSW and LMSW Series
Portable Resistance Spot Welders
Index No. SW/1.0
Issued Oct. 2002
Process
Resistance Spot
Welding
Description
Ordering Information
Resistance Spot Welders (Does not include tongs or tips.)
MSW-41 110 VAC, 50/60 Hz #900 371
MSW-41T 110 VAC, 50/60 Hz #901 345
LMSW-52 220 VAC, 50/60 Hz #900 377
LMSW-52T 220 VAC, 50/60 Hz #901 357
Options and Accessories
SWP-2 Spot Welder Pedestal
#040 872
Leaves hands free to handle
the work. When foot control
is depressed, tongs close and
Start Switch is activated.
Shown with spot welder and optional
timer installed.
Spot Weld Timer
#041 081 For MSW-41
#041 082 For LMSW-52
Cannot be used on “T” model
units. Provides 0 – 5 second
mechanical weld timer.
Tip Dresser #040 228
For use with pointed tips.
Gyro Bail #041 979
Supports weight of welder. Operates with boom
and counterweight or from spring-loaded cable.
Spot welds in any position.
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters–USA
Phone: 414-734-9821
USA and Canada FAX: 414-735-4134
International FAX: 414-735-4125
European Headquarters–United Kingdom
Phone: 44 (0)1625-525556
FAX: 44 (0)1625-537553
Web Site–www.millerwelds.com
certified by Canadian Standards Association.All MSW and LMSW units are
Litho in USA
Distributed by:
Notes:
One set of tips is supplied with each set
of tongs.
When ordering tips, must order minimum
of 4 sets.
Maximum welding capabilities are obtained
with minimum tong length.
Tips are made of RWMA Class 2 alloy.
Tongs and Tips
(Must be ordered separately from Spot Welders.)
Stock
Number
MSW-41
#900 371
MSW-41T
#901 345
LMSW-52
#900 377
LMSW-52T
#901 357
Input
50/60 Hz Amps
110 VAC 30
110 VAC 30
220 VAC 30
220 VAC 30
Rated Output (Calibrated with standard-type tongs)
6 in 12 in 18 in
(152 mm) (305 mm) (457 mm)
5550 A 4500 A 3600 A
5550 A 4500 A 3600 A
6750 A 5800 A 4850 A
6750 A 5800 A 4850 A
Work Capacity (Combined
thickness uncoated mild steel
using 6 in [152 mm] tongs)
1
⁄
8 in (3.2 mm)
1
⁄8 in (3.2 mm)
3
⁄
16 in (4.7 mm)
3
⁄16 in (4.7 mm)
Max OpenCircuit
Voltage
1.6
1.6
2.5
2.5
Dimensions
H: 6 in (152 mm)
W: 3
1
⁄
4 in (83 mm)
D: 13 in (330 mm)
H: 6 in (152 mm)
W: 3
1
⁄4 in (83 mm)
D: 16 in (406 mm)
Weight
Net
22 lb
(10 kg)
34 lb
(15 kg)
30 lbs.
(14 kg)
42 lb
(19 kg)
Ship
26 lb
(12 kg)
38 lb
(17 kg)
33 lbs.
(15 kg)
45 lb
(20 kg)
Rated Output at 50%
Duty Cycle
1.5 kVA
1.5 kVA
2.5 kVA
2.5 kVA
Specifications
(Subject to change without notice.)
*Tongs #040 197 and #040 200 are both straight.
3-1/2 in (89 mm)
3-1/2 in (89 mm)
STANDARD
6 in (152 mm)
12 in (305 mm)
18 in (457 mm)
(#040 197)*
(#040 198)
(#040 199)
MO Offset
6 in (152 mm)
12 in (305 mm)
18 in (457 mm)
(#040 200)*
(#040 201)
(#040 202)
STANDARD (#040 211)
MO OFFSET (#040 215)
TIPSTONGS
FLAT (#040 212)
6-1/2 in (165 mm)
9-1/2 in (241 mm)
7-1/2 in
(190 mm)
TT-6
12 in (305 mm)
18 in (457 mm)
(#040 203)
(#040 204)
TT-9
12 in (305 mm)
18 in (457 mm)
(#040 205)
(#040 206)
G-7
8 in (203 mm) (#040 207)
FF
8 in (203 mm) (#040 208)
FH
5 in (127 mm) (#040 209)
STANDARD (#040 211) FLAT (#040 212)
STANDARD (#040 211) FLAT (#040 212)
STANDARD (#040 211) FLAT (#040 212)
FF (#040 213)
FH (#040 214)
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