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RP-7 cutter

RP-7 cutter

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Ukraine, Alchevsk
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Technical characteristics
  • Country of manufactureUkraine

Are intended for rotary drilling of shots on coal and breed with strength on single-layer compression to 40 MPas. Form of a tverdosplav G34 of GOST 880-75. Brand of a tverdosplav of BK8 state standard specification 3882. Drilling is carried out by manual electric or pneumatic drills.
The cutter fastens to a twisted boring bar by means of a wedge-shaped shaft and the forelock. Drilling to be carried out without washing and a purge of shots. The cutting part of a cutter consists of two feathers reinforced by symmetric hard-alloy plates. The rational geometry of the main cutting edges and a rassechka provide the increased specific loading and wear resistance of a cutter, increasing that its resource and speed of drilling at simultaneous decrease in dust formation.
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RP-7 cutter
RP-7 cutter
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