Thomas E. Oertley

Cartridge assembly for a track chain of a track type work machine

Idler wheel assembly for track-type vehicle

Track-type vehicle undercarriage

Drive sprocket which has rotating members which are engaged by drive lugs of a track

Endless track chain with rotatable sleeve

Joint assembly to resist galling

Reduced sound transmitting idler for track-type vehicles

Pin cartridge for a pin joint

Impact reducing idler wheel for a track-driven machine

Apparatus and method for adjusting tension of a drive track chain of a work machine which utilizes a sensor for sensing position of an undercarriage component