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Twist drill bit made of HSS-Co tool steel.
Short series.
Cobalt contentCoin the alloy increases the durability of the drill. Alloying with cobalt also increases the red hardness (the ability to withstand overheating without degrading properties).
An additional hardening TiN coating (titanium nitrite, golden color) is applied to the working part of the drill.
Right-hand cutting, sharpening 90 °, i.e. for soft and brittle materials.
Sanded.
Two cutting edges, two spirals.
The shank diameter corresponds to the drilling diameter.
Sharpening with a 90°angle defines the recommended field of application for drilling the following materials:
plastic
plexiglass
ebonite, celluloid
marble and other fragile materials
mild steel and alloys
Characteristics:
drill type: twist
shank: cylindrical
direction of rotation: right-handed
sharpening angle: 90 °
steel grade: HSS-Co
cobalt content: ~ 1%
hardening surface coating: TiN
color: golden yellow
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 multiplies the service life of the 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.
