Page 203 - Parlec Catalog

Technical Information

Compression Stroke Adjustment 201

Numertap 100, 200, 300, 700, 770 units
®
The NUMERTAP 100, 200, 300, 700 and 770 series tapping attachments with machine tapers, feature a length adjustment screw.
®
This allows the compression stroke to be reduced or eliminated, if desired, to provide more accurate depth control. Adjusting
the compression stroke to zero will result in a tension only set-up, the best solution for synchronous tapping. Turning the length
adjustment screw counterclockwise reduces the compression stroke but does not affect the tension stroke.

Access for Hex Key Requires
Removal of Retention Knob The projections of the unit can be adjusted by turning the screw in either
direction until the desired length is reached. Changing the length in this
manner does not affect the tension stroke. This is an important feature
if redundant tools are being set of if reground taps are being used in
existing programs
Length Adjusting
Screw Adjust the compression stroke counterclockwise until the tapping
attachment body contacts the shank. This will set for tension only. This
is recommended to eliminate or avoid tap elongation in synchronous
tapping cycles.

Adjustable
Compression
Length

TENSION-ONLY, THE BEST SOLUTION FOR SYNCHRONOUS TAPPING
®
The NUMERTAP 100, 200, 300, 700 and 770 units can be purchased as tension only units (TT) or can be adjusted to tension only
units by following the instructions above. Tension only is the best solution for synchronous tapping. If the unit is purchased as a
TT, the tension spring is eliminated during assembly.
The unit will be the same length as a TA unit. If a TA unit is adjusted to eliminate the compression stroke, the unit will be 1/4"
®
shorter than its original projection length. NUMERTAP 700 units can be adjusted for tension only, but cannot be used in
synchronous tapping cycles.

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