Technical Information
External Laydown Threading
Required Information
Chuck
Jaws
CCW
rotation
25mm
From Part Drawing:
material:
thread form:
tolerance:
operation:
pitch diameter:
8UN Class 2A
316SS, 200 HB
8UN
class 2A
external threading
50mm x 25mm deep
50mm
feed
From Machine Setup Data:
tooling: 20mm x 20mm
spindle rotation: anti-clockwise
feed: toward chuck
70mm
Steps for a Successful Threading Operation
Step 1 •
Determine Threading Method
Step 2 •
Select Insert
Need to Know: Need to Know:
• Operation (external). • Thread form (ISO R262 1mm pitch).
• Spindle rotation (CCW).
Anti-clockwise rotation. • Hand of insert (right hand — ER).
• Feed direction (toward chuck).
• Right-hand toolholder.
Choose the High-Performance Solution
• Right-hand insert (ER).
• Standard helix method.
catalogue number insert size TN6025
3ER10ISO 3 •
High-Performance Selection
NOTE: Use insert with largest insert size available.
insert: 3ER10ISO
grade: TN6025
speed: 150 m/min
Step 3 •
Select the Grade and Speed Step 4 •
Select Toolholder Step 5 •
Select Shim
Need to Know: Need to Know: Need to Know:
• Workpiece material (316SS-200HB). • External or internal operation
(external). • Thread form — TPI or pitch (8 TPI).
• Pitch diameter to determine minimum
bore diameter (N/A). • Helix method (standard).
See Laydown Threading (LT) shim
selection chart.
• Operation (external).
Options: Grade and Speed
Selection Guidelines
• Pitch diameter (50mm).
• Type of tooling — toolholder, boring
bar (toolholder).
• Hand of tool (right hand).
• Insert size (16).
Select SM-YE3 shim
stainless
steel
NOTE: For this application, the standard
shim supplied should be replaced
with the recommended shim,
SM-YE3.
general purpose
and high performance
external
TN6025
Options:
50–360 m/min
F98
catalogue number insert size shim
AL203R 3 SM-YE3
widia.com
threading
operation