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| LT-7 |
Submerged Arc DC Wire Feeder
K227-1 LT-7 Tractor (Standard Model)
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The LT-7 Tractor is a self-propelled mechanized wire feeder, designed for the submerged arc process with track system capabilities. It is self-guiding and easy to operate – only one operator is usually required. It is designed to be used with a variety of Lincoln DC constant voltage and constant current power sources. The rugged, lightweight unit permits quick movement to the next joint. Its compact size fits through small openings and confined spaces. Butt and fillet welds can be made on heavy plate or steel as light as 12 gauge (2.5mm). The LT-7 Tractor is ideal for the following applications: ship and barge building, storage tank erection, bridge deck installation, beam, girder or column fabrication, and long seams on heavy weldments. |
| Advantage Lincoln |
- LT-7 Tractor feeds 3/32 to 3/16" (2.4 to 4.8 mm) solid wires, from 100 - 400 inches per minute (2.5 - 10.2 m/min) wire feed speed.
- Calibrated tractor drive adjusts travel speeds from 6 to 70 inches per minute (0.12 to 1.8 m/min).
- Vertical head lift adjuster for adjusting electrical stick-out from 1/2 in. to 5 in. (12.7 to 127.0 mm).
- Weld angle is up to 50° from vertical on either side; drag angle is up to 30° from vertical.
- Control box is conveniently located on the tractor (can be mounted either left or right), eliminating the need to return to the power source for routine procedure changes.
- Exceptional tracking control and self-steering in most applications leave the operator free for quality control, joint cleaning and flux handling.
- Welds butts, horizontal fillet and lap joints to the left or right side of the tractor frame for convenience.
- Close mechanical alignment between wire and joint maximizes weld quality with no fixturing costs.
- Three-year warranty on parts and labor.
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| Physical Specifications |
Weight:120 lbs. (54 kgs. )
Dimensions (in) H x W x D : 27.5 x 33 x 14
Dimensions (mm) H x W x D : 698 x 838 x 356 |
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Description |
| Output |
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| Input |
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| Unit Includes |
25 ft control cable |
| Required Options |
| K1822-25 |
Control Cable |
| K1842-10 |
Weld Power Cable - Lug to Lug - 10 ft. |
| K1842-35 |
Weld Power Cable - Lug to Lug - 35 ft. |
| K1842-60 |
Weld Power Cable - Lug to Lug - 60 ft. |
| K1842-110 |
Weld Power Cable - Lug to Lug - 110 ft. |
| K231-3/32 |
Contact Nozzle Assembly |
| K231-1/8 |
Contact Nozzle Assembly |
| K231-5/32 |
Contact Nozzle Assembly |
| K231-3/16 |
Contact Nozzle Assembly |
| K148A |
Positive Contact Nozzle Assembly |
| K148B |
Positive Contact Nozzle Assembly |
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| Recommended General Options |
| K1797-25 |
Control Extension Cable - 25 ft. |
| K1797-50 |
Control Extension Cable - 50 ft. |
| K1798 |
Terminal Strip Adapter Cable |
| K149-1/8 |
Linc-Fill Long Stickout Extension |
| K149-5/32 |
Linc-Fill Long Stickout Extension |
| K232 |
Horizontal Fillet and Lap Adapter Kit |
| K229 |
Flat Fillet Adapter Kit |
| K230 |
Butt Seam Guide Kit |
| K400 |
Track Conversion Kit |
| K277-1 |
Tiny Twinarc Kit |
| K277-2 |
Tiny Twinarc Kit |
| K310 |
Flux Screen |
| K58 |
Magnetic Separator |
| K285 |
Concentric Flux |
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| Recommended Power Source Options |
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Welding Specifications
| Input |
WireSpeedRange ipm (m/min) |
SolidWireSizeRange in (mm) |
115VAC
50/60 Hz |
100-400 (2.5-10.2) |
3/32-3/16 (2.4-4.8) |
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| ©1999-2008 The Lincoln Electric Company, China. |
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