... Box5.ISO90011.Why you choose us?1.we are the factory of Gears,we have 3 wholesale shops in China ... All kinds of gears, pins, carriers for Excavators on the travel or swing device: Sun Gear, Planatery Gear, Carrier, Pins, Ring ... Gears, Hubs, Shaft ... 4.A Corner View of the Facotry 5. ... SUMITOMO LS280 DJ Excavator Gear Ring for Travel Device