TopGroove ™
Machining Guidelines
Machining Guidelines for Chip Control • Grooving
When the proper cutter diameter is not available, proper cutter
positioning will provide positive results.
• Centre height of insert should be positioned at the centre
of the workpiece or up to 0,13mm above.
• Dwell time in the bottom of the groove (more than three revolutions)
is not recommended.
• Chip control is feed-rate related and should be adjusted to fi t the
particular situation. Recommended feed range is 0,08–0,3 mm/rev.
Machining Guidelines for Chip Control • Turning/Profi ling
Maximum depth of cut for side cutting (turning/profi ling)
depends on the material being cut and the width
of the tool.
• 1,7–3,3mm wide insert
can cut up to 1mm deep.
• 3,5–4,8mm wide insert
can cut up to 2mm deep.
• 5–6,35mm wide insert
can cut up to 3mm deep.
Finish Turning the Groove
insert
catalogue number
maximum internal
groove depth
minimum
bore diameter
mm mm
NG-1094L 1,91 20,32
— 1,02 11,18
NG-2031R/L 1,27 18,54
NG-2041R/L — —
NG-2047R/L — —
NG-2058R/L — —
— 2,79 63,50
NG-2062R/L 2,59 44,45
NG-2094R/L 2,49 38,10
NG-2125R/L 2,03 25,40
— 1,40 18,54
NG-3047R/L — —
NG-3062R/L 2,39 44,45
NG-3072R/L 2,29 41,28
NG-3078R/L 1,91 34,93
NG-3088R/L — —
NG-3094R/L — —
NG-3097R/L 3,81 60,33
NG-3105R/L — —
1. Plunge both sides of groove width. NG-3110R/L 3,68 53,98
2. Plunge centre area to remove web of
material remaining. NG-3122R/L — —
NG-3125R/L 3,51 47,63
3. To avoid insert chipping and to achieve groove wall
perpendicularity, follow the tool path outlined. NG-3142R/L — —
NG-3156R/L 3,18 41,28
NG-3178R/L — —
NG-3185R/L 2,79 34,93
4. Use the lightest depth of cut that still allows
good chipbreaking, tool life, and surface fi nish.
NG-3189R/L — —
NG-4125R/L 3,81 69,85
— 6,35 146,05
NG-4189R/L 6,22 127,00
NG-4213R/L 6,10 114,30
NG-4219R/L 5,54 82,55
NG-4250R/L 5,08 63,50
NOTE: The same maximum groove depth and minimum bore diameter values also apply
to metric, NG-K (chip control), and NR (full radius) inserts of similar size.
The same internal grooving depth limits are a function of bar clearance versus
bore diameters.
E86
widia.com
• 0,79–1,6mm wide insert
can cut up to 0,6mm deep.
Groove Limits