Page 728 - Master Catalog 2017, Inch

Technical Information
External Laydown Threading

Required Information chuck
jaws CCW
rotation
From Part Drawing: 1.000" 8UN Class 2A
material: 316SS, 200 HB
thread form: 8UN
tolerance: class 2A
operation: external threading 2.000"
pitch diameter: 2.00" x 1.00" deep feed
From Machine Setup Data:
tooling: .750" x .750"
spindle rotation: counter-clockwise
feed: toward chuck
2.750"

Steps for a Successful Threading Operation

Step 1 • Step 2 •
Determine Threading Method Select Insert
Need to Know: Need to Know:
• Operation (external). • Thread form (8 UN Class 2A).
• Spindle rotation (CCW). • Hand of insert (right hand — ER).
Counter-clockwise rotation.
• Feed direction (toward chuck).
• Right-hand toolholder.
• Right-hand insert (ER). Choose the High-Performance Solution
• Standard helix method.
catalog number insert size TN6025
3ER8UN 3" •
High-Performance Selection
NOTE: Use insert with largest iC available.
insert: 3ER8UN
grade: TN6025
speed: 500 SFM

Step 3 • Step 4 • Step 5 •
Select the Grade and Speed Select Toolholder Select Shim
Need to Know: Need to Know: Need to Know:
• Workpiece material (316SS-200HB). • External or internal • Thread form — TPI or pitch (8 TPI).
operation (external).
• Operation (external). • Pitch diameter (2").
• Pitch diameter to determine • Helix method (standard).
minimum bore diameter (N/A).
See Laydown Threading (LT)
Options: Grade and Speed • Type of tooling — toolholder, shim selection chart.
Selection Guidelines boring bar (toolholder).
• Hand of tool (right hand).
• Insert size (3/8"). Select SM-YE3 shim
threading stainless
operation steel
NOTE: The SM-YE3 shim is supplied
general purpose with the selected toolholder.
and high performance
external
TN6025
Options:
150–450 SFM
catalog number insert size shim
LSASR-123 3" SM-YE3
First choice: LSASR-123 holder

F102 widia.com

WID M
i
V
Th
i
di
F102 F103 Mi
16 T
L WID_Master16_Turning_Threading_F102_F103_Minch_REBRAND.indd 102 h REBRAND N b 9 2015 4 06 PM 11/12/15 4:31 PM