HTFJ17-4G5S (full part number ZA-HTFJ17-4G5S2CG-01) is a dedied single-row separable cylindrical roller bearing exclusively developed for NSK CVT automobile transmission countershaft input assembly. It adopts open separable inner and outer ring structure, outstanding heavy radial load capacity, stable high-speed rotation under frequent variable torque shifting conditions, widely used for Japanese passenger car CVT gearbox aftermarket maintenance.