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The cobalt Co content in the alloy increases drill life. Alloying with cobalt also increases the red hardness (the ability to withstand overheating without degrading properties).
Without additional hardening coating.
Right-cutting, sharpening 135 °,those. for hard materials.
Sanded.
Two cutting edges, two spirals.
The shank diameter corresponds to the drilling diameter.
The 135°angle sharpener defines the recommended application for drilling the following materials:
alloyed and unalloyed steel
non-ferrous metals
cast iron of different grades
cermets
hard plastic, including fiberglass
Characteristics:
drill type: twist
direction of rotation: right-handed
sharpening angle: 135 °
cobalt content: ~ 1%
hardening surface coating: no
color: dark bronze
Attention!
Drilling of stainless steel must be done at the required drilling speeds, it is imperative to use coolant (cutting fluid). The use of coolant on any metal increases the resource many times over
drill.
Recommended sharpening angles of drills
Material to be drilled
Drill angle
Cast iron and steel
116…118
Steel forgings and hardened steel
125
Brass and soft bronze
130…140
Soft copper
125
Aluminum, babbit
130…140
Silumin
90…100
Magnesium alloys
110…120
Ebonite, celluloid
80…90
Marble and other fragile materials
90…100
Organic glass
70
Plastics
50…60
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
To carry out technical calculations and obtain the exact parameters of the goods, use the datasheets from the manufacturer's website.
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The data presented in the product description are for reference only and may differ from those indicated by the manufacturer.
