C25: Shank Diameter – Features a 25 mm straight cylindrical shank, typically built with a Weldon flat layout for secure clamping into side-lock or collet tool holders.
4D: Drilling Depth Ratio – Indicates the max working reach is 4 times the drilling diameter (4 × 24 mm), making it optimized for deeper hole production and deep-pocket boriNG
24: Cutting Diameter – Precision-engineered to cut exact 24 mm holes.
99: Maximum Flute Length – Specifies a maximum drilling depth limit of 99 mm before hitting the shank bottleneck.
SP07: Insert Pocket Profile – The pocket seats are custom-cut exclusively for SP (Square) profile inserts, specifically matching SPMG 07T308 standard square indexable inserts.
Operational Features
Dual Insert Configuration: This drill body runs an asymmetrical balance of two indexable square blades—one central insert to cut the core material, and one peripheral insert to finish the outer wall diameter.
Internal Cooling: Engineered with integrated rear coolant inlets that route pressurized fluids straight to the cutting tip. This design aggressively flushes chips forward along the flute, avoiding nesting and premature breakage during 4D deep operations.