Caterpillar 9S-3581 Tapered Roller Bearings (9S3581)Reduce friction and protect mating parts with Caterpillar 9S-3581 Tapered Roller Bearings. Specially designed to handle large radial and axial loads, these bearings are ideal for CATERPILLAR BACKHOE LOADER equipment models such as 416B, 416C, 416D, 420D, 424D, 426C, 428B, 428C, 430D, and 436C. Weighing only 0.34 lbs, these bearings have a length of 9.4 cm, width of 9.4 cm, and a depth of 4.2 cm.