1. Product Overview HM807040/HM807010 is a standard inch-size single row separable tapered roller bearing assembly, consisting of cone HM807040 and matching cup HM807010, overall dimensions 44.45×98.425×30.16mm. Model Code Definition HM807040: Cone assembly with logarithmic crowned tapered rollers and stamped steel cage, optimized for uniform stress distribution HM807010: Single-flange outer cup, fully separable from cone for easy disassembly, inspection and replacement This