Jiffy-Tap

Tap Stroke and Spindle Adjustment:

The spindle spline will disengage from the hydraulic motor at about a 2-1/2" extension. To prevent damage to the spline, it must always be sufficiently engaged. On taps up to 3/8" diameter, strokes up to 2-1/8" maximum may be used. But on taps from 3/8” to 5/8" diameter, the stroke should be limited to 2"; and on taps larger than 5/8" diameter, the stroke should never exceed 1-7/8". If longer strokes are needed, consult factory for extended stroke option.

The spindle should not be allowed to bottom out on the retraction stroke because the thrust may force the lead screw nut out of its press fit in its housing. (If this should happen, it can be pressed back in). The switch actuator block and rear actuator screw have been designed, and have been factory set, to stop the spindle about 1/16" from bottom out position. Normally, the position of the rear limit switch need not be adjusted. In practice, however, either switch can be set to stop the spindle at any position, forward or reverse, although in extreme cases, the standard 1/4"-20 x 1" actuating bolt may have to be replaced with a longer one. Be sure that the longer bolt cannot damage the opposite switch.