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                      | HOME > Products > DT Hammer > DTH Hammers > 8" Series DTH Hammers > DT-80 Hammer |  
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                              | Description | Metric |  
                              | Backhead (Topsub)
 | API 4-1/2" REG PIN |  
                              | Outside | 180mm |  
                              | Piston | 148mm |  
                              | Length (including topsub)
 | 1,415mm |  
                              | Bit Shank Type | DHD380 QL80
 SD8
 |  
                              | Weight | 192kg |  
                              | Bit Size | 195-310mm |  |  
                   	  | Part List |  
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                              | 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 |  |  |