1. Product Overview 6279/6220 is single row inch standard tapered roller bearing, composed of separable inner cone (6279) and outer cup (6220). It can bear combined heavy radial load and unidirectional axial thrust. Usually arranged in paired layout to resist bidirectional axial forces. Open separable design supports convenient independent installation, inspection and maintenance. Widely used on heavy-duty truck axles, mining machinery, construction equipment, gear reducers