Sumitomo CCMT21.51 ESU AC820P Carbide Turning Insert (10 Pack)

High-performance CCMT21.51ESU carbide turning insert with Sumitomo’s AC820P grade.

Designed for reliable general-purpose steel turning, the CCMT21.51ES features a positive 7° clearance angle and a sharp cutting geometry that helps reduce cutting resistance. The ESU chipbreaker supports controlled chip evacuation in finishing to light-cutting applications, making this insert suitable for external turning, internal boring, and profiling operations.

AC820P is a CVD-coated carbide grade engineered to provide a strong balance of wear resistance and fracture resistance when machining steel. It performs effectively across continuous and light interrupted cutting conditions while delivering stable tool life and consistent machining results. Sumitomo identifies AC820P as the predecessor to its newer AC8025P steel-turning grade.

- Genuine Sumitomo Product
- In Stock – Ships from USA
- Pack of 10 Inserts
- Ships in 1 Business Day

Specifications

Manufacturer: Sumitomo Electric Carbide
Insert Style: CCMT21.51ES
ISO Code: CCMT060204
Grade: AC820P
Chipbreaker: ES
Application: Finishing to Light Cutting
Workpiece Material: Steel (P)
Coating: CVD Coated Carbide
Insert Shape: 80° Diamond
Clearance Angle: 7° Positive
Inscribed Circle: 1/4"
Thickness: 3/32"
Corner Radius: 1/64"
Cutting Direction: Neutral
Number of Cutting Edges: 2
Quantity: 10 Inserts