Abstract: A disk bearing standard which may be utilized with support tubes of different cross sections by simply changing a low cost U-bolt which clamps the standard to the tube. The standard includes front and lower locating surfaces formed at an angle of ninety degrees with respect to each other. A bolt-receiving member angles upwardly from the forward surface at an angle of about forty-five degrees and receives an angled leg of the U-bolt. The rear leg of the U-bolt extends downwardly through an elongated slot at the aft end of the lower locating surface. The size of the U-bolt is selected according to the size of the mounting tube, and the U-bolt clamps the standard in two planes perpendicular to each other to prevent misalignment of the standard when loads are applied. A rearwardly extending appendage provides a scraper tube mounting which is fixed with respect to the center line of the disk blades regardless of the selected size of the mounting tube.

Abstract: A disk gang assembly constructed in such fashion as to eliminate the long center tie bolt. An arrangement is provided comprising a plurality of like disks spaced axially apart on a common axis and held in spaced apart relation by a plurality of interspaced spacers. Each spacer is provided at opposite ends with radial flanges to receive and sandwich disks respectively therebetween. The disks and flanges have notching bolt holes through which sets of bolts or the like are passed to secure the disks and spacers together as a rigid axial unit. The spacers are mutually axially piloted on each other and opposite ends to maintain the coaxial status and each pilot includes an annular shoulder for receiving a complementary central circular opening in each disk. End spools are also provided for carrying bearings for mounting the assembly in a supporting frame.