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
L
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.

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

300mcm 300mcm 300mcm 300mcm

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

300mcm 300mcm 300mcm 300mcm

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

300mcm 300mcm 300mcm 300mcm

000
000
000
000

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

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
300mcm
300mcm

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
300mcm
300mcm

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




300mcm 300mcm 300mcm 300mcm

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




300mcm 300mcm 300mcm 300mcm

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