RPMW 1204 M0 Grade FM125 #FMCarbide

RPMW 1204, grade FM125 — positive round milling insert.

Round indexable insert, ISO designation RPMW 1204. FM125 is a PVD grade — multi-purpose milling and drilling grade — PVD coating with thermal resistance and a tough substrate.

Specifications

• Insert designation (ISO): RPMW 1204
• Insert shape: round (R)
• Clearance angle: 11° (P)
• Tolerance class: M
• Insert type: W — with hole, countersunk one side, no chipbreaker
• Grade: FM125
• Coating: PVD
• ISO application range: P20–P35 · M10–M30 · K20–K40 · S15–S25
• Cutting speed, non-alloy steel: 460–1250 SFM (140–380 m/min)
• Cutting speed, low-alloy steel: 390–980 SFM (120–300 m/min)
• Cutting speed, high-alloy steel: 230–490 SFM (70–150 m/min)
• Cutting speed, ferritic & martensitic stainless: 390–660 SFM (120–200 m/min)
• Cutting speed, austenitic stainless: 430–820 SFM (130–250 m/min)
• Cutting speed, grey cast iron: 390–820 SFM (120–250 m/min)
• Cutting speed, nodular cast iron: 430–720 SFM (130–220 m/min)
• Cutting speed, titanium & super-alloys: 80–150 SFM (25–45 m/min)
• Cutting speed, hardened material: 130–260 SFM (40–80 m/min)

MILLING KNOW-HOW

Get more from your milling inserts.

Practical guides to choosing, understanding and running your inserts.

01 / SELECTION

Grades & chip breakers

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

Explore the chart → 02 / INSERT CHOICE

Pick the right insert

AOMT or XNEX? What separates the two families and when each one earns its place.

Read the guide → 03 / CUTTING PARAMETERS

Feeds and speeds

Work through the numbers that keep a cutter alive under load.

Explore the formulas →