CNMG 160608 Chip Breaker BR Grade FM2553 / CNMG 542 BR #FMCarbide

CNMG 160608 Chip Breaker BR Grade FM2553 / CNMG 542 BR #FMCarbide

Turning Insert
$10.73 per insert$107.30 per box of 10
Grade
Chip Breaker
Item #

Sold in boxes of 10 inserts. Prices are shown per insert. Minimum order: 10 inserts. Order in multiples of 10.

Quantity (inserts)
- +

10 inserts = 1 box · 20 inserts = 2 boxes

CNMG 160608 / CNMG 542, chip breaker BR, grade FM2553 — negative 80° rhombic turning insert.

5/8" inscribed circle, 1/4" thick, 1/32" corner radius. The BR breaker is the roughing geometry: 0.012–0.024 ipr (0.3–0.6 mm/rev) at 0.08–0.24" (2–6 mm) depth of cut. FM2553 is a CVD (Al₂O₃) grade — tough substrate for heavy interrupted cuts in steel and stainless, heavy roughing in mild steel, and first choice for superalloys.

Specifications

  • Insert designation (ISO): CNMG 160608
  • Insert designation (inch): CNMG 542
  • Insert shape: 80° rhombic (C)
  • Clearance angle: 0° — negative (N)
  • Tolerance class: M
  • Insert type: G — with hole, chipbreaker both sides
  • Inscribed circle (I.C.): 5/8" (15.88 mm)
  • Thickness: 1/4" (6.35 mm)
  • Corner radius: 1/32" (0.79 mm)
  • Chip breaker: BR — Steel — roughing
  • Feed rate range: 0.012–0.024 ipr (0.3–0.6 mm/rev)
  • Depth of cut range: 0.08–0.24" (2–6 mm)
  • Grade: FM2553
  • Coating: CVD (Al₂O₃)
  • ISO application range: P20–P35 · M10–M30
  • Cutting speed, non-alloy steel: 490–1150 SFM (150–350 m/min)
  • Cutting speed, low-alloy steel: 300–980 SFM (90–300 m/min)
  • Cutting speed, high-alloy steel: 230–820 SFM (70–250 m/min)
  • Cutting speed, ferritic & martensitic stainless: 390–750 SFM (120–230 m/min)
  • Cutting speed, austenitic stainless: 260–660 SFM (80–200 m/min)
  • Cutting speed, titanium & super-alloys: 110–260 SFM (35–80 m/min)

Tool holders that accept this insert

60 RMC toolholders in stock take this insert — 80° rhombic, 0° — negative clearance, 5/8" inscribed circle, 1/4" thick. Pick by the shank your turret takes.

RMC square-shank toolholders — made in the USA

1" shank MCFNL 16-5D · MCFNR 16-5D · MCGNL 16-5C · MCGNL 16-5D · MCGNR 16-5C · MCGNR 16-5D · MCKNL 16-5C · MCKNL 16-5D · MCKNR 16-5C · MCKNR 16-5D · MCLNL 16-5C · MCLNL 16-5D · MCLNR 16-5C · MCLNR 16-5D · MCLNR 16-5E · MCMNN 16-5D · MCRNL 16-5D · MCRNR 16-5D · MCYNN 16-5D
1-1/4" shank MCFNL 20-5D · MCFNR 20-5D · MCGNL 20-5D · MCGNR 20-5D · MCKNL 20-5D · MCKNL 20-5E · MCKNR 20-5D · MCLNL 20-5D · MCLNL 20-5E · MCLNR 20-5D · MCLNR 20-5E · MCMNN 20-5D · MCRNL 20-5D · MCRNR 20-5D · MCYNN 20-5D
1-1/2" shank MCGNL 24-5D · MCGNL 24-5E · MCGNR 24-5E · MCKNL 24-5D · MCKNR 24-5E · MCLNL 24-5D · MCLNL 24-5E · MCLNR 24-5D · MCLNR 24-5E · MCMNN 24-5D · MCRNL 24-5E · MCRNR 24-5E
1" x 1-1/4" shank MCFNL 85-5D · MCFNR 85-5D · MCKNL 85-5D · MCKNR 85-5D · MCLNL 85-5D · MCLNR 85-5D · MCLNR 85-5E · MCRNL 85-5D · MCRNR 85-5D
1" x 1-1/2" shank MCFNR 86-5D · MCGNR 86-5D · MCKNL 86-5D · MCLNL 86-5E · MCLNR 86-5E

Boring bars and interchangeable heads. 40 more RMC tools take the same insert for internal turning. See RMC boring bars →

TURNING KNOW-HOW

Get more from your turning inserts.

Practical guides to choosing, understanding and using your inserts.

01 / SELECTION

Grades & chip breakers

Explore the grade and chip-breaker selection chart for your turning operation.

Explore the chart 02 / INSERT CODES

Know your insert

Understand turning-insert designations and what the letters and numbers mean.

Read the guide 03 / CUTTING PARAMETERS

Turning calculations

Learn how to use a turning formula calculator to work through the numbers.

Explore the formulas

Availability and Shipping

FM Carbide maintains stock in the USA. If this item is not in stock, estimated time to ship is 14–21 calendar days.

Estimated time to ship is measured in calendar days, from order placement until your order is handed to the carrier. Carrier transit time is additional. Orders may ship sooner. We accept orders awaiting replenishment; please contact us before ordering if you need a specific shipping date.

See our Shipping Policy for details.

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