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”). 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. 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).
Barrel spacing up to six inches is available as semistandard
(see price list). These are drilled to order from
stock components. To order you must give the barrel
spacing desired, along with the Item number (from table).
Equa-Press Holders are made in two mounting styles:
platen models to mount directly to the platen on presstype
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.
Equa-Press holders can be used with forces up to 1500 lbs.