Conventional measuring methods and instruments are not always suitable for checking tapered seats or to measure the inside or outside envelope diameter of the roller set of a cylindrical roller bearing. Therefore, SKF has developed an assortment of gauges specially designed to take the accurate measurements necessary when mounting cylindrical roller bearings with a tapered bore in a machine tool application. Of course, these gauges are also useful for other applications.
Ring gauges in the GRA 30 series (fig) and DMB taper gauges (fig) can be used to check the most common tapered seats. Measurements can be made quickly and accurately. While a GRA ring gauge can only be used to check a tapered seat for a particular bearing size, the taper gauges in the DMB series can be used for a range of diameters, as well as for tapers other than 1:12.
To precisely adjust the radial internal clearance or preload when mounting a cylindrical roller bearing with a tapered bore, it is necessary to accurately measure the inside or outside envelope diameter of the roller set. SKF internal clearance gauges in the GB 30 (fig) and GB 49 series (fig) enable simple and accurate measuring.
For information about other SKF measuring devices, consult the SKF application engineering service.