Laydown Threading
Insert Selection Guide
Step 1 • Select Threading Method and Hand of Tooling
Required Information:
L
• External/internal operation.
R
L
R
L
• Spindle rotation/hand of thread.
• Feed direction.
hand of thread
hand of toolholder
R
hand of insert
Feed direction toward the chuck • standard helix • RECOMMENDED
L
R
R
L
L
L
R
R
external left-hand thread
L
external right-hand thread
internal left-hand thread
R
R
L
internal right-hand thread
Feed direction away from the chuck • reverse helix*
R
L
L
L
R
R
R
L
external right-hand thread
L
external left-hand thread
L
internal right-hand thread
R
R
internal left-hand thread
*Negative shim required
Step 2 • Select Holder from Catalogue 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.
The insert size must match the gage insert size of your toolholder selection:
F40
catalogue
number gage
insert minimum
bore diameter shim
S0812LSER2 2IRA60 16,5mm —
S2020LSER3 3IR... 36,8mm SM-YI3
widia.com
• Insert size (gage insert).