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Welding ahead of the curve: Lincoln Electric upgrades to Tier 4 Interim compliant engines for its diesel-driven welder line.


Lincoln Electric Co., Cleveland, Ohio, has announced that its entire line of diesel-powered engine-driven welders will be equipped with EPA Tier 4 Interim compliant engines by this fall.

Earlier this year, EPA implemented its Tier 3 off-highway regulations, which will be current until 2012. However, if an engine meets Tier 4 Interim standards, it will be compliant until 2013. And, all of the company's engine suppliers opted to go to Tier 4 Interim.

"The way it turned out, the engine suppliers we just happen to deal with --and we deal with Perkins, Deutz and Kubota--they all decided to meet EPA Tier 4 Interim standards," said Eric Snyder, senior product manager for engine-driven welders at Lincoln. "That was strictly voluntary on their part. They could've chosen to meet EPA Tier 3 and they'd be perfectly legal, everything would be fine, but they chose to meet--all independently--they chose to meet Tier 4 Interim."

That action gives the engine manufacturers an additional year before their engines need to meet the more stringent Tier 4 Final regulations. "For us as a customer of an engine supplier," said Snyder, "we like that too. It means we have one year longer before we have to change the diesel engine again in each of our products."

Lincoln's diesel-powered engine-driven welder line comprises 14 models, with outputs of 18.8 hp at 3600 rpm from a Kubota engine in the Ranger 305 D (with 305 Amps of dc welding output and 9.5 kW of ac generator output) to the Air Vantage 500, powered by a Kubota engine rated 58 hp at 1850 rpm (with 575 Amps of dc welding output and 20 kW of three-phase ac generator output). Diesel engine manufacturers supplying Tier 4 Interim engines to Lincoln include Kubota, Perkins and Deutz. Since the welders also produce ac power, two people can use the machine at the same time--one welding and one with a power tool, the company said.

Lincoln utilizes two different control systems to maintain desired levels of welding output in the diesel products. With pure dc generator output, welding output is produced by rotating an armature inside a welding generator frame. This directly creates a smooth dc output, said Snyder. Lincoln also offers its patented Chopper Technology, in which a dc input goes through a high-speed switch. Output is controlled by the on-time of the switch, also offering a smooth dc output, said Snyder. The Chopper Technology products are more compact for the welding output they produce, Snyder said.

Lincoln's welders are manufactured at the company's Cleveland or Toronto, Canada, locations. Targeted users are construction teams, pipe rig owners and rental fleet managers.

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Publication:Diesel Progress North American Edition
Date:Nov 1, 2008
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