Countersinks RUKO

Made by turning from a single tool material using a tool made of cubic boron nitride - CBN. Since CBN is a material more durable than silicon carbide or corundum, the cutting edges of the drills are more durable and sharp. Due to the deep chip grooves, the cutting edges are sharp and strong. They are used for work on steel, cast iron, non-ferrous and light metals. The best result is achieved when working at low revs.

The tool is successfully used in such industries as electrical engineering, plumbing, heating devices, car service, aviation production, electronics, etc. Suitable for work on conventional industrial materials, such as non-ferrous metals, structural steel, plastic, duroplastic, and sheet steel.

Countersink DIN 335 are designed for countersinking of Forms A and B of DIN 74.

When using the RUKO cooling spray or RUKO lubricating paste, the wear resistance of the drills is significantly increased.

	High Speed Steel		Cutting angle: 90°
	High Speed Steel with 5% cobalt		Number of cutting faces: hole
	Hard alloy		Number of cutting faces: 1
	Right-hand drilling		Number of cutting faces: 3
	Limit: h8		Angle of sharpening: 118 °
	Shank: Morse cone		Smooth surface
	Shank: Cylindrical		Covering: black
	Shank: 3 clamping planes		TiAlN coating
	Body bits: 6.35 mm x 27.0 mm		TiN coating
	Sharpening spiral		For aluminum