5P1777 Cylindrical Roller Bearing Race for Caterpillar

The 5P1777 is a cylindrical roller bearing race, also described as the outer race of a bearing assembly, for Caterpillar equipment. It is used in Caterpillar engines, machines, and wheel tractor-scrapers, including the equipment models listed below. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by SKU 5P1777 and is intended for installation in assemblies that use the corresponding Caterpillar bearing race reference. The component is supplied as a bearing race and is not described as a complete cylindrical roller bearing assembly.

Fitment

• Caterpillar 3306 engine and machine applications
• Caterpillar 3406 engine and machine applications
• Caterpillar 3406B engine and machine applications
• Caterpillar 3406C engine and machine applications
• Caterpillar C-9 engine and machine applications
• Caterpillar C9 engine and machine applications
• Caterpillar 627E wheel tractor-scraper
• Caterpillar 627F wheel tractor-scraper
• Caterpillar 627G wheel tractor-scraper
• Caterpillar 637E wheel tractor-scraper

Fitment is stated for the Caterpillar equipment series and models listed above. The exact installation position and the complete bearing assembly configuration depend on the machine serial number and the specific component arrangement.

For service identification, verify the existing bearing race number and the equipment parts documentation before installation. The model names 3406, 3406B, 3406C, C-9, and C9 are retained as separate references because they appear separately in the available fitment data.

Cross-reference numbers

The available reference data identifies 5P1777 as the Caterpillar equipment manufacturer part number and as the supplier SKU. No additional supplier part numbers are specified in the available product data.

Specifications

The available technical information does not specify dimensions, material grade, surface treatment, thread parameters, weight, or the number of rollers in the associated bearing assembly. These parameters should be matched against the machine parts documentation or the removed component when checking installation compatibility.