511-0313 333-2920 333-2920 5110313 3332920 3332920 329F em will send free parts to repair. And this model Final Drive used for excavator hitachi

333-2920 333-2920 333-2953 332920 3332920 3332953 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