Bevelers, countersinks Bohre

Countersinks (chamfering) Bohre

According to the official terminology adopted in the system of technical regulation, countersinking is "an axial cutting tool to increase the accuracy of the shape of the hole and increase its diameter" (GOST 25751-83). The difference between countersinks and countersinks is the teeth on the end of the working part and the guiding pins for precise entry of the tool into the machined hole.

Advantages of Bohre countersinks

A countersink consists of a working part and a shank. Shanks can be cylindrical and conical, the structure of the working part is determined by the purpose of the tool.

Bohre conical countersinks are used to machine holes to chamfer and form conical recesses for fasteners. Countersinks (chamfers) consist of a working part and a shank. The working parts of Bohre countersinks are shaped like a cone with an apex angle of 90° and are equipped with three cutting teeth. Countersinks are available with shanks in two versions - Weldon 19.05 mm and cylindrical diameters from 8 to 16 mm.

The bohre™ aligned geometry of the end faces allows for increased countersinking life without loss of countersinking efficiency.
Blade Sharpening. Unique blade sharpening and bohre™ chip groove geometry ensure efficient and accurate countersinking
Universal Weldon shank. Fits any manufacturer's magnetic machine tools with Weldon 19.05 spindle

In mechanical engineering, conical countersinks are used to solve the technological problem of creating high-quality bearing surfaces for fasteners (bolts, screws, nuts, etc.). Spiral drills are ineffective in this area due to the peculiarities of their design. When machining conical holes for fasteners, tools with two main cutting edges do not allow obtaining quality results. Countersinks due to their design successfully cope with this task.

Bohre countersinks with Weldon shank

Item number	Product name
KB010090	Chamfer 3-254590°
KB010275	Chamfer 3-304790°
KB010170	Chamfer 3-405290°
KB010670	Chamfer 3-505790°
KB010671	Chamfer 3-556090°

The designation of a countersink (chamfer) with Weldon shank includes four symbols:

symbol (number) identifying the number of teeth;

symbol (number) identifying the diameter of the working part;

character (number) identifying the total length;

symbol (number) identifying the angle of the cone;

Bohre chasers with cylindrical shank

Item number	Product name
K0006673	Chamfer 8 3-12,45690°
K0006674	Chamfer 10 3-16,56090°
K0006675	Chamfer 10 3-20,56390°
K0006676	Chamfer 10 3-256790°
K0006677	Chamfer 12 3-317190°
K0006678	Chamfer 16 3-4010090°

The designation of a countersink (chamfering) with c/r includes five symbols:

symbol (number) identifying the diameter of the cylindrical shank;

symbol (number) identifying the number of teeth;

symbol (number) identifying the diameter of the working part;

character (number) identifying the total length;

symbol (number) identifying the angle of the cone;