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Sandvik Coromant Rhombic (C) 80° Turning Inserts: For Steel, CNMG Insert, 19 Seat Size, 0° Clearance Angle, 3/4 in Insert Size, Roughing, 10 PK

Item # 412K648

$358.40 Pack of 10

Product Specs

Insert Style: CNMG
Seat Size: 19
Rake: Negative (Extended-Life)
Clearance Angle: 0 °
Insert Size: 3⁄4 in
Thickness: 1⁄4 in
Corner Radius: 3⁄64 in
Application: Roughing
Chipbreaker Code: PR
Wiper Insert: No
Material Grade: 4235
For Use On: Steel
ANSI Code: CNMG 643-PR 4235
Coating Process: CVD
Cutting Application: Turning
Cutting Direction: Neutral
Cutting Edge Length: 0.762 in
Finish/Coating: Multilayer TiCN/Al2O3/TiN
General Shape: Rhombic
Hole Type: Straight Hole
ISO Code: CNMG 643-PR 4235
Included Angle: 80 °
Material: Carbide
Material Application ISO Number (First Choice): P
Number of Cutting Edges: 4
Shape: 80° Rhombus
Through-Hole ID: 0.312 in

Compliance and Restrictions

This product contains a chemical that is regulated under California Proposition 65.
  • Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.
  • Warning: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.

Country Of Origin

  • India

About Rhombic (C) 80° Turning Inserts

Providing the best balance of cutting-edge strength and operational versatility of all the insert shapes, these rhombic inserts have an 80° point angle and are a good choice for a wide range of longitudinal turning applications. With a cutting edge that is stronger than a trigon insert but less strong than a square insert, they are recommended for facing, roughing, light roughing, and semi-finishing applications.

Insert shapes are available with a range of point angles. In general, inserts with a large point angle have a stronger cutting edge but produce more vibration and require more machine power than inserts with a small point angle. Inserts with a small point angle are more versatile, provide better accessibility for detailed cutting, produce less vibration, and require less machine power than inserts with a large point angle, but they have a weaker cutting edge and may be more prone to heat damage.

Inserts are available with a negative or positive basic shape. Negative inserts have a 0° clearance angle. They provide good edge strength and are recommended for external turning and heavy cutting applications. Double-sided negative inserts offer twice as many cutting edges as positive inserts, but single-sided negative inserts provide the best stability in heavy roughing applications. Positive inserts have a clearance angle that is greater than 0° and are a good choice for internal turning applications and external turning applications on slender workpieces. Positive inserts are single sided and produce lower cutting forces than negative inserts.

These turning inserts are the first choice for machining steel.

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