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Description Metric
백해드
(탑서브)		 API 4-1/2" REG PIN
외경 180mm
피스톤 외경 148mm
길이
(탑서브 포함)		 1,415mm
타입 DHD380
QL80
SD8
무게 192kg
비트 적용 범위 195-310mm

Part List
No Description Part Number Weight
1 Back head(Top sub) DT-R08001 39.5
2 "O"_ring of top sub DT-R08002 0.02
3 Chek Valve DT-R08003 1.5
4 Spring DT-R08004 0.5
5 Make-up ring DT-R08005 7.4
6 Air Distributor DT-R08006 11
7 Inner Cylinder DT-R08007 13
8 Piston DT-R08008 38
9 Cylinder DT-R08009 63
10 Piston Retaining Ring DT-R08010 0.6
11 Bit Retaining Ring DT-R08011 1.4
12 Drive Chuck DT-R08012 16.2
13 Drill bits DT-R08013 40