1313919 OD Bearing Race 97.70mm for Caterpillar Parts 131-39191313919 Outer Diameter Bearing Race 97. 70mm VXB Bearing 1313919 Bearing Outer Race refers to a customized or unique design of the inner race of a roller bearing. The inner race is the ring shaped component that holds the rolling elements (such as rollers or balls) in place and allows for their rotational movement within the bearing assembly. 1313919 Quantity: One Outer Race Brand: VXB Bearing