515-0073 527-7306 527-7307 5150073 5277306 5277307 330F em will send free parts to repair. And this model Final Drive used for excavator hitachi

515-0072 515-0073 515-0079 5150072 5150073 5150079 323E and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi