This includes the extra long graphite filled cast iron rod bushing and a standard oversize wear band (located on the rear of the piston).
这包括超长石墨填充铸铁连杆衬套和一个标准的特大型穿带（位于活塞后）。
2
The a Series encompasses many value-added features such as an extra long graphite filled cast iron rod bushing and a standard oversized wear band that is located on the rear of the piston.
It proposes measures of improving piston structure design and adopts the structure of cast aluminum bronze embedded in the hole in the piston pin bushing.