6M1638 Tapered Roller Bearings

6M1638 is a tapered roller bearing used in Caterpillar equipment. The listed applications cover construction, mining, agricultural, industrial, and material-handling machines identified by the equipment series below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is listed for use on the following Caterpillar equipment families and models. Fitment should be verified against the machine model, serial number, and the bearing position before installation, because the supplied application data does not identify a specific machine assembly or installation location.

Fitment

• Challenger: 35, 45, 55
• Landfill Compactor: 836, 836G, 836H, 836K
• Load Haul Dump: R2900, R2900G, R3000H
• Petroleum Transmission: TH35-E81
• Underground Articulated Truck: AD40, AD45, AD45B, AD55, AD55B, AD60, AE40, AE40 II
• Wheel Dozer: 834, 834B, 834G, 834H, 834K
• Wheel Loader: 986H, 988F, 988F II, 988G, 988H, 988K, 992

The fitment list includes both base models and model variants designated by a letter or Roman-numeral suffix. These designations are retained as provided for identification of the applicable Caterpillar equipment series. The part data does not specify whether the bearing is used in the same position across all listed models.

Specifications

The supplied technical data provides the listed overall dimensions and weight only. Bore diameter, outside diameter, bearing width, roller material, cage material, clearance, seal configuration, lubrication requirements, and installation position are not specified. The product data also does not identify components included with the bearing or provide a separate cross-reference number list.