Kennametal Carbide Deep Hole Drills

HP Solid Carbide Deep-Hole Drills for Steel, Cast Iron, and Non-Ferrous Materials

Primary Application

B27_HPG Series Solid Carbide Drills are the optimum platform for drilling holes up to 30 x D in steel, cast iron, and stainless steel materials. Drill deep holes up to 4x faster than conventional HSS and gun drills. Application of MQL is possible.

The B27_HPS in the new uncoated KN25™ grade now offers the same advantages for drilling in non-ferrous materials such as aluminium, copper, and brass. These series are now available from 2,3–16mm (.09–.63") diameter and in lengths from 15–30 x D.

Features and Benefits

HP Drill-Point Design

Low thrust.
Excellent centring capabilities.
Highest possible feed rates.

Four-Margin Lands

Improves hole straightness.
Improves hole alignment when drilling through cross holes.

Unique Flute Design

Drastically improved chip evacuation.
Better hole surface quality.

Customisation

Intermediate diameters available as semi-standards.
Length variations -including even longer versions -available as engineered solutions.

Click through to the products to see videos of them in action.

B271 K25

Product Code	D1	L	L3	L4 Max	L5	D
B271Z08000HPS KN25 »	8.00	181.00	138.00	120.00	1.50	8.00
B271Z08500HPS KN25 »	8.50	200.00	153.00	134.00	1.60	9.00
B271Z08733HPS KN25 »	8.73	200.00	154.00	134.00	1.60	9.00

B272 KN25

Product Code	D1	L	L3	L4 Max	L5	D
B272Z08000HPS KN25 »	8.00	221.00	178.00	160.00	1.50	8.00
B272Z08500HPS KN25 »	8.50	245.00	196.00	177.00	1.60	9.00
B272Z08733HPS KN25 »	8.73	245.00	198.00	178.00	1.60	9.00

B273 KN25

Product Code	D1	L	L3	L4 Max	L5	D
B273Z08000HPS KN25 »	8.00	261.00	218.00	200.00	1.00	8.00
B273Z08500HPS KN25 »	8.50	290.00	238.00	219.00	2.00	9.00
B273Z08733HPS KN25 »	8.73	290.00	241.00	221.00	2.00	9.00

B274 KN25

Product Code	D1	L	L3	L4 Max	L5	D
B274Z08000HPS KN25 »	8.00	301.00	258.00	240.00	1.48	8.00
B274Z08500HPS KN25 »	8.50	335.00	281.00	262.00	1.57	9.00
B274Z08733HPS KN25 »	8.73	335.00	285.00	265.00	1.61	9.00