Spot Welding Supplies - Electrodes, Holders, and Accessories - Tuffaloy Products

EQUA-PRESS* Dual Tip Holders

U. S. Pat. No. 2,979,599 Canada pat. 637470

The Equa-Press Holder makes two identical welds at once. When it contacts the workpiece, the forging pressure is automatically equalized between the two electrodes, regardless of variations in work thickness or electrode wear (up to 3/16 inch). The two tip-holding barrels are sliding pistons, whose movements are controlled by a mechanical equalizing slide in the housing (see cutaway drawings). The spring's only function is to return the barrels to a fully extended position when there is no work contact. Maximum conductivity is maintained through sturdy copper-alloy working parts. Absolute fidelity of weld spacing is maintained. Spacing can vary up to 4 inches, using TUFFALOY bent offset tips in Equa-Press holders having the standard barrel spacing of two inches (shown)(EXAMPLE)

Barrel spacing up to six inches is available as semi-standard (see price list). These are drilled to order from stock comonents. To order you must give the barrel spacing desired, along with the Item number (from the table). Example: 350-4012-3.25 ".

Equa-Press Holders are made in two mounting styles: platen models to mount directly to the platen on press-type welding machines, and shank models for rocker arm machines. All are available in two designs: the standard and the short (close-coupled) type. The short design is internally flood-cooled and takes up less space in the welder.

Note: For best results, position the holder so that a line drawn through the electrode centers is at, or nearly at, right angles to the direction of the welder arms. Otherwise, the magnetic field between the arms can cause an excess of current to flow through the inboard electrode.

Mounting Style	Standard Design		Short Design
	Description	Item No.	Description	Item No.
1-in. shank	4010	350-4010	4015	350-4015
1-1/4-in. shank	4011	350-4011	4016	350-4016
1-1/2-in. shank	4012	350-4012	4017	350-4017
Platen	4013	350-4013	4018	350-4018

Lower holders and electrodes for use with Equa-Press Holder

A lower, fixed, dual tip holder is offered for use with Equa-Press Holders. Like the Equa-Press, it has a standard two-inch tip spacing and helps make two welds at once, precisely alike. The standard transverse bar electrode shown is used when work geometry does not require tips on the side. They are water-cooled.

STANDARD LOWER HOLDER

	Shank Diameter	Lower Holder		Lower Electrode
		A=2 inches
		Description	Item No.	Description	Item No.
	1	4030	350-4030	4020	350-4020
	1-1/4	4031	350-4031	4021	350-4021
	1-1/2	4032	350-4032	4022	350-4022
	SPECIAL LOWER HOLDER Style  Shank Diameter (inches) Description† A Tip Spacing Range (inches) 4" Body 1 4030 1-1/4 to 3   1-1/4 4031 1-1/4 to 3   1-1/2 4032 1-1/4 to 3 8" Body 1 8030 3 to 6   1-1/4 8031 3 to 6   1-1/2 8032 3 to 6 † WHEN ORDERING, SPECIFY CENTER DISTANCE AND EITHER 4RW OR 5RW SOCKETS

LOWER ELECTRODE

	Shank Diameter	Description
	1	4020
	1-1/4	4021
	1-1/2	4022

*Trademark

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