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Internal-combustion rock drill


Model

YN27J(YN27A)

YN30A

Weight

Kg

26-27.5

28

L*W*H

Mm

746*315*229

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Diameter of engine piston

Mm

58

58

Stroke of engine piston

Mm

70

70

Rotating speed of engine with load

Rpm

2,450

2,700-3,000

Drilling speed

Mm/Min

250

200

Oil consumption

L/M

0.12

0.13

Max. Drilling depth

M

6

6

End of tool shank(Hex*L)

Mm

22*108

22*108

Front end of breakeer(Hex*L)

Mm

22*108/25*108

25*108


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