... Angular Contact Ball Bearing Applicati on:mine machine,port hoisting machine,port transfer equipment,on shore and offshore crane,excavator, ... accommodation in both directions and bearings are arranged in pairs· Series: 70xx, 72xx, 73xx, 74xx, 79xx, 30xx, 32xx, 33xx, ... 38xx, 39xx, non-standard series and inch series· Contact angle classified as C (15-degree), AC (25 ...