SI-MTFNL 40-5 0° End Cutting Edge Angle for Negative Triangle TNM_ Inserts

SI-MTFNL 40-5 — boring bar, 2.50" bar diameter, 3.062" minimum bore, 16.0" overall length. Made in the USA by RMC Tooling.

0° End Cutting Edge Angle for Negative Triangle TNM_ Inserts.

Steel-shank indexable boring bar from RMC Tooling, machined in the United States. Ground shank, standard indexable geometry, and a rigid clamping system sized to the bar diameter — the combination that keeps chatter down at the depths where boring bars usually give up.

Sized by minimum bore, so start there: pick the largest bar diameter your bore will clear. Every clamp, lock pin, seat and screw in this bar is a stocked RMC service part, listed below.

Specifications

• Model: SI-MTFNL 40-5
• Minimum bore: 3.062"
• Bar diameter (D): 2.50"
• Overall length (C): 16.0"
• Lead angle (K°): 10°
• Holding method: clamp and locking pin
• Insert shape: triangle
• Holder style: offset shank, 0° end cutting edge angle
• Holder rake: negative
• Hand: left hand
• Brand: RMC Tooling — made in the USA

Exact replacement parts for this tool

These are the service parts RMC lists for this exact model — not a generic cross-reference. Every one is stocked.

See all RMC spare parts & hardware →

Not sure how to read an insert code? Turning insert designation explained.

Dimensions as published in the RMC 2020 catalog, page 49.