1t-1078 Rock Drilling Machine Spare Parts CAT Bearing

This bearing (Model 1T-1078) is a compact yet heavy-duty load-bearing component designed for mining drilling rigs and heavy construction machinery. Featuring an annular structure with precision-ground needle rollers arranged in a circular cage, it is manufactured from premium bearing steel-with the race rings forged, CNC-machined and heat-treated, and the needles cold-drawn and lapped. This construction delivers exceptional axial load capacity, high rigidity and smooth rotation, even in the limited installation space of mining equipment. The as-machined surface finish ensures wear resistance and durability in dusty, high-vibration mining environments, making it a critical spare part for maintaining the stable operation of equipment slewing and lifting systems.