The parameters that the effecting wear mechanism of cBN tools on the hardened steel (SCr420) turning was investigated. In the previous report, it was suggested that cutting speed had an effect on volume of crater wear and the cutting fluid had an influenced on rake face of low cBN content sintered compact. In this paper, we investigated effect of binder around cBN particles of sintered compact using coated cBN particles on the wear damage pattern. As the result, it was found that aluminum compound around cBN particle had an effect on wear damage pattern on flank face and rake face of cBN content sintered compact.