Basic dynamic load rating C, basic static load rating C0, and allowable load F of the CRWG series and CRWG…H series show values for downward loads in case of parallel arrangement of four ways and two pairs of roller cages as one set. In addition, the upward and lateral load rating is the same as downward load rating.
For the CRW series, since the number of cylindrical rollers that share load of each direction varies, the load rating for each load direction and allowable load must be obtained. In addition, basic dynamic load rating CU, basic static load rating C0U, and allowable load FU in the dimension table show values per cylindrical roller.
Allowable load
Allowable load refers to load of smooth rolling motion on contact surface to which maximum contact stress is applied and the sum of whose elastic deformation of rolling elements and raceway is small.
Therefore, use applied load within the allowable load range if very smooth rolling motion and high accuracy are required.
Calculation of load rating and allowable load of standard type CRW series
Upward and downward load
Basic dynamic load rating C (N)