These assemblies are the basic form of the sealed track, but include grease to help reduce internal pin and bushing wear, promoting extended life of the assembly. Grease Sealed Track (GST): The link assemblies of the GST consist of links, pins, bushings and a “W” seal.Working with our valued customers, we’ve designed three different types of link assemblies for excavators to help you meet the needs of your wide-ranging machine applications. We understand your excavator needs are demanding and varied. Materials and specifications are subject to change without notice. Order online Note: All comparisons and claims of improved performance made herein are made with respect to the prior Komatsu model unless otherwise specifically stated. Komatsu now offers conventional and general construction track rollers for PC200, PC220, PC300 and PC400. Cold weather spec, which has a different seal to withstand cold temperatures and maintain elasticity.Standard and single flange with internal lubrication, to offer track alignment during operation. ![]() Greater flange height on Komatsu OEM rollers provides maximum track alignment and machine stability under varying operating conditionsĭepending on the application, you can choose from a wide range of track rollers:.To provide absorption of shock loads and avoid brittleness, hardness decreases toward the inner bore surface hardness of the outer shell reduces wear caused by friction.Reservoir cavities in roller shells and shafts feed lubricant throughout the roller’s interior to reduce damage-causing heat.To help keep you up and running, heavy-duty mounting brackets secure rollers to track frames, allowing the transmission of shock loads throughout the track frame.For strength and long wear life, rollers have heat-treated tread and flange areas.To reduce friction and help extend roller life, Komatsu OEM rollers utilize highly polished shafts and bronze bushings.To help keep oil in and dirt out, rollers are constructed of long-wearing, heat-resistant material supported by rubber load rings. ![]() To withstand this, several quality steps are taken in the manufacturing of Komatsu genuine OEM rollers. ![]() Friction and shock loads transmitted from the track chain create heat within the roller.
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