Seam Welders: LS-SEAM WELDER

STANDARD CIRCULAR & LONGITUDINAL

The main frame of these seam welders is of heavy, rigidly reinforced welded steel construction for a minimum of mechanical deflection but a maximum of accessibility and neat appearance. The lower conductor support or knee is a heavy steel fabrication keyed to the frame for accurate vertical adjustment. The upper conductor is insulated from the frame, while the lower conductor is grounded to the frame, therefore work support tables or conveyors can also be grounded.

In addition, we stock a complete inventory of replacement parts and in-stock components can be shipped within 24 hours of order receipt. When you buy from Taylor-Winfield, you get sound technical advice, competent service and continued performance backed by single source responsibility.

WELDER TYPE

WELDER THROAT DEPTH INCHES

DOMESTIC SHIPPING WEIGHTS POUNDS

CRATED DIMENSIONS STANDARD WELDERS SEPARATE ARMS LENGTH x WIDTH x HEIGHT

LS LS LS LS

18
24
30
36

3,000
3,400
3,800
4,200

96" x 48" x 90"
102" x 48" x 90"
108" x 48" x 90"
112" x 48" x 90"

MS MS MS MS 18
30
42
48
4,000
4,500
5,000
5,500
102" x 48" x 96"
108" x 48" x 96"
114" x 48" x 96"
120" x 48" x 96"
HS HS HS HS 24
36
48
54
8,400
9,000
9,600
10,200
108" x 54" x 96"
114" x 54" x 96"
120" x 54" x 96"
126" x 54" x 96"

Weights and dimensions are approximate and include side mounted electrical controls.
Add 900 pounds to above weight for export boxing.

Seam Welder (pedestal)
  • Heavy, reinforced welded steel construction with current collector bearings.
  • Straddle type bushing bearings are provided for longitudinal configuration.
  • Tapered roller bearings carry the weld force load with absolute minimum friction and maintain precise alignment.
  • Oil bath for lubrication and heat dissipation with water cooled shaft and copper housing; provide high welding capacity at high duty cycle with a minimum of maintenance
  • Exceptionally low friction air cylinders.
  • Highly efficient water cooled welding transformer with Class F (155°C)
    insulation made in accordance with RWMA specifications.
  • Speed control valves to control ram movement.
  • Upper head adjustable for in/out wheel alignment.
  • Tap switch for multiple steps of transformer secondary voltage.
  • Two stage foot switch with pressure switch interlock.
  • Bushing type secondary current bearings; class 2/class 3 alloy combination.
  • Variable speed D.C. motor for wheel drive.
  • Single gear, single knurl or single friction drive.
  • Pair of wheel electrodes, RWMA Class 2.
  • Single phase AC or three phase MFDC.
  • Weld force chart, force vs. cylinder air pressure.
  • Open drain water system with inlet manifold and flow adjusting valves.
  • One set of instruction manuals and standard flint gray paint.

Circular – wheels are perpendicular to the welder throat and are the most popular for making long seams in flat sheet or around flanges, as in fuel tanks or around a cylinder.

Longitudinal – wheels are parallel to the welder throat and the lower conductor is usually an unsupported round horn which allows clearance in welding the longitudinal seam of a cylinder or barrel.

Universal – Capable of conversion to either circular or longitudinal by rotating the upper weld head and replacing the lower arm. Two lower arms would be provided

WELDER & THROAT
(6” increments)

WELDING FORCE 1

2
RAM
STROKE

STANDARD ELECTRODES

8
ADJ.
LOWER ARM

With precision air
regulator

With standard
air regulator

 

Size

Maximum
Lbs.

Minimum
Lbs.

Minimum
Lbs.

Maximum
Inches

3
Dia.
New

Dia. Worn Out

6
Thickness Maximum

7

Total Adj. Inches

LS-18 thru LS-36

 

1150

 

330

 

400

 

4

 

7"

 

4.5" 4

 

5" 5

 

0.375"

 

Class 2

 

3

MS-18 thru MS-48

 

2400

 

575

 

700

 

5

 

8"

 

5"

 

6"

 

0.500"

 

Class 2

 

4

HS-24 thru HS-54

 

3300

 

850

 

990

 

5

 

10"

 

7"

 

8"

 

0.750"

 

Class 2

 

5

1.      Maximum welding forces are based upon 80 lbs. PSI air line pressure and include head weights, but have estimated friction loss subtracted. Minimum welding forces are based upon 10 lbs. PSI air line pressure and include head weights but have estimated friction loss subtracted.
2.      Ram stroke is adjustable from maximum to zero.
3.      Applies to standard electrodes; upper and lower circumferential and longitudinal; friction, knurl, gear or idling drives.
4.      Applies to standard electrodes; upper and lower circumferential and longitudinal; friction, knurl or idling drives.
5.      Applies to standard electrodes; upper and lower circumferential and longitudinal gear drives.
6.      Applies to flood cooled type. All standard internally cooled electrodes are 0.750" thick for LS, MS and HS size machines.
7.      Applies to welding of lower carbon steel. Class 1 alloy is supplied for welding aluminum alloys and Class 3 alloy for stainless steel.
8.      Lower arm adjustment is upward and downward from normal position half of the indicated total adjustment.

 

WELDING SPEEDS of friction or knurl driven wheel are independent of electrode diameters, but speed of gear driven electrodes vary with electrode diameters and are based upon average diameters of 6", 7" and 9" for LS, MS and HS welders respectively.

RWMA Size 1

KVA RATING 60 CYCLES

RATED THROAT DEPTH INCHES

SECONDARY VOLTS

SECONDARY
AMPS *
S.C. + or – 15%

DEMAND KVA S.C. + or – 15%

DUTY CYCLE % S.C.

POWER FACTOR S.C. %

PRIMARY AMPS *
MAXIMUM

SCR SIZE AMPS

CIRCUIT BREAKER RATING

CABLE SIZE 5% DROP 100 FT. RUN, CABLES IN CONTACT

MAX. PAR.

MIN. SERIES

MAX. PAR.

MIN. SERIES

MAX. PAR.

MAX.
PAR.

230 V

460 V

575 V

230 V

460/575 V

230 V

460/575 V

Machine equipped with two standard sleeve bearings.

50

18
24
30
36

3.85
3.85
4.81
4.81

1.70
1.70
2.00
2.00

19,215
16,800
18,585
16,695

  8,505
7,402
7,665
6,930

  71
62
85
77

28.0
36.0
19.0
23.5

39.0
36.5
34.0
31.0

320
282
387
349

160
141
194
175

128
113
155
140

1200
1200
1200
1200

225
225
225
225

100
100
100
100

0000
0000
0000
0000

00
00
00
00

75

18
24
30
36

4.91
4.91
6.42
6.42

2.05
2.05
2.59
2.59

24,570
21,420
24,780
22,260

10,185
8,925
9,975
8,925

116
101
152
136

23.3
30.5
13.6
17.0

39.0
36.5
34.0
31.0

526
459
689
616

263
229
345
308

211
184
276
247

1200
1200
1200
1200

225
225
225
225

100
100
100
100

300 mcm
300 mcm
300 mcm
300 mcm

000
000
000
000

Machine equipped with one standard sleeve and one current collector bearing.

50

18
24
30
36

3.85
4.81
4.81
4.81

1.70
2.00
2.00
2.00

17,325
19,215
17,745
15,540

   7,665
7,980
7,350
6,405

    64
88
82
72

33.0
17.5
21.0
27.0

39.0
36.5
34.0
31.0

293
402
371
326

146
201
185
163

118
161
148
131

1200
1200
1200
1200

225
225
225
225

100
100
100
100

0000
0000
0000
0000

00
00
00
00

75

18
24
30
36

4.91
6.42
6.42
6.42

2.05
2.59
2.59
2.59

22,155
25,515
22,613
20,685

  9,240
10,290
9,555
8,400

104
157
145
126

29.0
12.7
14.8
19.5

39.0
36.5
34.0
31.0

474
713
661
574

237
356
331
286

189
285
263
229

1200
1200
1200
1200

225
225
225
225

100
100
100
100

300 mcm
300 mcm
300 mcm
300 mcm

000
000
000
000

Machine equipped with two current collector bearings.

50

18
24
30
36

3.85
4.81
4.81
4.81

1.70
2.00
2.00
2.00

15,750
17,640
16,380
14,490

6,930
7,245
6,825
5,985

58
81
75
67

41.3
21.1
24.3
31.2

39.0
36.5
34.0
31.0

263
368
343
303

132
184
172
152

105
147
137
121

1200
1200
1200
1200

225
225
225
225

100
100
100
100

0000
0000
0000
0000

00
00
00
00

75

18
24
30
36

4.91
6.42
6.42
6.42

2.05
2.59
2.59
2.59

20,160
23,520
21,945
19,320

8,400
9,450
8,820
7,770

95
144
135
118

34.7
15.0
17.2
22.5

39.0
36.5
34.0
31.0

432
656
613
537

216
327
306
268

173
262
245
215

1200
1200
1200
1200

225
225
225
225

100
100
100
100

300 mcm
300 mcm
300 mcm
300 mcm

000
000
000
000

* Short Circuit Values + or – 15% measured with 7″ diameter electrodes in contact.

RWMA Size 2

KVA RATING 60 CYCLES

RATED THROAT DEPTH INCHES

SECONDARY VOLTS

SECONDARY
AMPS *

DEMAND KVA S.C. + or – 15%

DUTY CYCLE % S.C.

POWER FACTOR S.C. %

PRIMARY AMPS * MAXIMUM

SCR SIZE AMPS

CIRCUIT BREAKER RATING

CABLE SIZE 5% DROP 100 FT. RUN, CABLES IN CONTACT

MAX. PAR.

MIN. SERIES

MAX. PAR.

MIN. SER.

MAX. PAR.

MAX. PAR.

230 V

460 V

575 V

230 V

460/575 V

230 V

460/575 V

Machine equipped with two standard sleeve bearings.

100

18
24
30
36

  5.25
5.25
8.24
8.24

2.23
2.23
3.66
3.66

24,150
21,525
30,030
27,195

10,185
9,030
13,335
12,075

121
107
235
213

38.0
48.0
10.0
12.1

40.0
37.0
34.5
32.5




   274
244
536
484

220
195
428
388

1200
1200
1200
1200




225
225
225
225




000
000
0000
0000

150

18
24
30
36

  6.42
6.42
10.50
10.50

2.75
2.75
4.73
4.73

29,400
26,145
38,325
34,650

12,600
11,235
17,220
15,645

179
160
383
347

39.0
48.7
8.5
10.3

40.0
37.0
34.5
32.5




   405
362
872
788

326
290
698
630

1200
1200
1200
1200




400
400
400
400




0000
0000
300 mcm
300 mcm

200

18
24
30
36

  7.70
7.70
12.16
12.16

3.44
3.44
5.50
5.50

35,280
31,395
44,415
40,110

15,750
14,070
20,055
18,165

258
230
515
464

33.0
41.5
8.4
10.2

40.0
37.0
34.5
32.5




   588
522
1166
1055

470
418
935
844

1200
1200
1200
1200




400
400
400
400




0000
0000
300 mcm
300 mcm

Machine equipped with one standard sleeve and one current collector bearing.

100

18
24
30
36

  5.25
8.24
8.24
8.24

2.23
3.66
3.66
3.66

21,840
30,870
27,825
25,410

  9,240
13,755
12,390
11,340

109
243
218
200

46.0
9.3
11.6
13.9

35.5
33.5
31.5
30.0




248
551
496
454

199
441
397
362

1200
1200
1200
1200




225
225
225
225




00
00
00
00

150

18
24
30
36

  6.42
10.50
10.50
10.50

2.75
4.73
4.73
4.73

26,775
39,375
35,490
32,235

11,550
17,745
15,960
14,490

164
394
355
322

46.2
8.0
9.8
12.0

35.5
33.5
31.5
30.0




373
893
812
732

298
716
645
586

1200
1200
1200
1200




400
400
400
400




0000
0000
0000
0000

200

18
24
30
36

  7.70
12.16
12.16
12.16

3.44
5.50
5.50
5.50

32,025
45,570
41,160
37,485

14,280
20,685
18,690
17,010

235
527
476
434

40.0
7.9
9.8
11.8

35.5
33.5
31.5
30.0




536
1197
1082
982

427
960
866
790

3300
3300
3300
3300




400
400
400
400




300 mcm
300 mcm
300 mcm
300 mcm

Machine equipped with two current collector bearings.

100

18
24
30
36

  5.25
8.24
8.24
8.24

2.23
3.66
3.66
3.66

19,845
28,245
25,725
23,625

   8,400
12,495
11,445
10,500

100
223
202
185

55.5
11.0
13.5
16.0

33.5
31.5
29.5
28.0




  226
505
458
420

182
404
367
336

1200
1200
1200
1200




225
225
225
200




00
00
00
00

150

18
24
30
36

  6.42
10.50
10.50
10.50

2.75
4.73
4.73
4.73

24,255
36,015
32,655
29,925

10,395
16,170
14,700
13,545

148
360
327
299

56.5
9.5
11.5
14.0

33.5
31.5
29.5
28.0




  336
819
740
677

269
656
593
542

1200
1200
1200
1200




225
400
400
400




000
0000
0000
0000

200

18
24
30
36

  7.70
12.16
12.16
12.16

3.44
5.50
5.50
5.50

29,085
41,685
37,800
34,755

13,020
18,900
17,115
15,750

213
483
438
403

50.5
9.5
11.5
13.5

33.5
31.5
29.5
28.0




  484
1097
995
916

388
879
797
735

3300
3300
3300
3300




400
400
400
400




300 mcm
300 mcm
300 mcm
300 mcm

* Short Circuit Values + or – 15% measured with 8″ diameter electrodes in contact.
‡ 230 Volt installation Not Recommended.