| 摘要 |
A sleeve (44) is disclosed for use with a piston (46) of a hydraulic hammer (12). The sleeve may have a generally cylindrical body with a top end (28) and a bottom end (26), and a central bore (94) passing axially from the top end of the generally cylindrical body to the bottom end. The generally cylindrical body may be a composite structure including a guide layer (68) forming an inner annular surface of the central bore, an energizer layer (70) located radially outward of the guide layer and being bonded to the guide layer, and a support layer (72) bonded to the energizer layer. The support layer may form an outer surface of the generally cylindrical body. |
