1. Product Overview 4T-30313D is metric single row separable tapered roller bearing, D suffix stands for 24°-32° steep large contact angle, factory pre-matched cone and cup set with overall dimension 65×140×36mm. The steep conical contact angle greatly boosts unidirectional axial thrust bearing capacity while retaining outstanding heavy radial load performance, perfectly fits heavy-duty equipment subjected to intense axial impact during operation. Separable inner cone and