Page 668 - Master Catalog 2017, Inch

Laydown Threading
Insert Selection Guide

Step 1 • Select Threading Method and Hand of Tooling

Required Information:
• External/internal operation. L R L R L R
• Spindle rotation/hand of thread.
• Feed direction.
hand of thread hand of toolholder hand of insert

Feed direction toward the chuck • standard helix • RECOMMENDED
L R
R
L
L

R
L R L R
L R

external left-hand thread external right-hand thread internal left-hand thread internal right-hand thread

Feed direction away from the chuck • reverse helix*
R L
L
L
R

L R R L R R
L

external right-hand thread external left-hand thread internal right-hand thread internal left-hand thread
*Negative shim required

Step 2 • Select Holder from Catalog Page
Required Information: Select the appropriate holder for the insert size and hand:
• External/internal operation.
• Minimum bore diameter (for internal operations).
• Hand of tool.
• Insert size (gage insert).

The insert size must match the gage insert size of your toolholder selection:

catalog gage minimum
number insert bore diameter shim
S0812LSER2 2IRA60 .650" —
S2020LSER3 3IR... 1.45" SM-YI3

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