Sandhog — supplier of solid carbide boring bars and CNC cutting tools, turning chucks

Using a solid carbide Sandhog SCKCR2020K09 boring bar maximizes stability, ensures superior surface finish, and overcomes depth-to-diameter ratio limitations. This cutting tool, specifically designed for high-precision CNC turning centers, is the optimal solution for complex internal hole machining, grooving, and contouring operations where rigidity is critical.
Key features and benefits:
Unmatched rigidity and damping: SCKCR2020K09 is made of high-quality micrograin solid tungsten carbide, whose rigidity is approximately 3 times that of similar tools with steel shanks. This significantly reduces vibration, chatter, and tool deflection, allowing stable machining of parts at greater cutting depth and with greater overhang.

Excellent surface finish: The built-in stability of the solid carbide all-metal construction minimizes harmonic vibration, enabling excellent internal surface finish and consistently meeting tighter tolerances, typically without the need for secondary finishing operations.

Optimized for deep cavity machining: a diameter of 20 mm (D1) and a length of 200 mm (L1) make this boring bar an ideal choice for machining deep cavities. The SCKCR-type clamping head ensures excellent clamping and insert clearance. Its strength enables efficient machining even in cases where the toolholder may fail.

Precision-ground shank and geometry: The bar is equipped with a ground round shank with a diameter of 20 mm and a precise 9 mm deep (H) hole for the locking screw, ensuring perfect alignment in the CNC chuck, as well as reliable and repeatable clamping, which is critical for high-precision machining.

Durability and wear resistance: compared with high-speed steel (HSS) or heavy metal shanks, tungsten carbide has superior wear resistance and heat resistance, which ensures a longer service life of the cutting tool and stable performance.

Technical specifications:

Cutting tool type: solid carbide boring bar

ISO designation: SCKCR2020K09

Boring type: SCKCR (90° approach angle, top clamp clamping system)

Shank diameter (D1): 20 mm

Overall length (L1): 200 mm

Depth of cut: depends on insert size (see compatible inserts below)

Hole depth (H): 9 mm

Through coolant: optional (depends on the specific supplier model)

Recommended compatible inserts:

The holder is designed for use with standard industrial geometry inserts of the corresponding thickness, including CNMG, CNMM, etc. Confirm the exact insert dimensions (e.g., CNMG-1204xx) based on the required depth of cut and application. Type C turning inserts (80°, rhombic) are used.
Ideal application areas:
Deep hole boring and internal turning

Machining of high-strength materials (e.g., stainless steel, chromium-nickel alloys, titanium, hardened steel)

High-precision finishing of internal holes

Grooving and internal bore profiling

Operations accompanied by vibration and low surface quality