1. Product Overview 67787-90241 is heavy-duty imperial double row TDO (Tapered Double Outer) tapered roller bearing assembly, composed of two matched single cones (67787) and one double bore shared outer cup (90241), standard imperial dimension 6.875in (174.625mm) bore × 9.75in (247.65mm) OD × 4.0624in (103.185mm) total width. Series & structure explanation: TDO double outer cup integrated structure, two rows of tapered rollers arranged back-to-back inside one unified outer