MITSUBISHI MATERIALS CORPORATION
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PRECISION BREAKER SYSTEM
NEGATIVE INSERTS (3-DIMENSIONAL CHIP BREAKER)
CHIP CONTROL RANGES
CHIP CONTROL RANGES
FEATURES OF CHIP BREAKER
Breaker Features CNGG Type DNGG
Type		 SNGG Type TNGG Type VNGGType
PK
  • Precision finishing for steel.
  • Preferentially good chip control.
  • Low depth of cut and low feed rates.
 –
FJ
  • Finishing for difficult-to-cut materials.
  • Sharp cutting edge gives
    excellent surface finish.
  • The inclined edge reduces cutting resistance.
 – –
MJ
  • Finishing to medium cutting for difficult-to-cut materials.
  • Sharp cutting edge gives
    excellent surface.
  • The inclined edge reduces cutting resistance.
 –  

NEGATIVE INSERTS (ANGULAR AND PARALLEL CHIP BREAKER)
CHIP CONTROL RANGES
CHIP CONTROL RANGES
FEATURES OF CHIP BREAKER
Breaker Features DNGG Type SNGG Type TNGG Type VNGG Type
FS
  • Precision finishing.
  • Small width lead breaker for excellent chip control.
  • Sharp cutting edge gives excellent surface finish.
 – – –
F
  • Finish cutting.
  • Lead breaker controls chip flow.
  • Sharp cutting edge gives excellent surface finish.
 – – –
K
  • Parallel breaker for light cutting.
  • Excellent chip control at low to medium feed rates.
 – – –
R/L
  • Parallel breaker for medium
    cutting.
  • Good chip control for medium feed rate.

POSITIVE INSERTS (ANGULAR PARALLEL CHIP BREAKER)
CHIP CONTROL RANGES

CHIP CONTROL RANGES

FEATURES OF CHIP BREAKER
Breaker Features CCGH
/CCGT Type		 CPGT Type DCGT Type TPGH Type
FS
  • For precision finishing.
  • Small width lead breaker
    for good chip control.
  • Sharp cutting edge gives
    good surface finish.
 - - -
F
  • For finish cutting.
  • Lead breaker controls
    chip flow.
  • Sharp cutting edge gives
    good surface finish.
 -
R/L
  • Lead breaker at light
    cutting.
  • Good chip control at low
    to medium feed rates.
 - - - -
Standard
  • For light cutting.
  • Good chip control at low
    to medium feed rates.
 - - -
Breaker TPGV / TPGT Type TCGT Type VBGT
/VCGT Type		 WBGT Type WCGT Type WPGT Type
FS - -   - -
F - -
R/L - -   - -
Standard - -   - -

Breaker Features CCET Type CCGT Type DCET Type DCGT Type VBET Type
SR
  • The wide lead breaker for medium cutting is suitable for automatic lathe machining.
  • The insert design for low resistance controls chip flow.
 - -
SS
  • The parallel breaker for light cutting is suitable for automatic lathe machining.
  • Excellent chip control at low feed rate.
 - - -
SN
  • The parallel breaker for general purpose is suitable for automatic lathe machining.
  • Excellent chip control at low to medium feed rates.