Water pump bearings are primarily used in automotive water pumps, basically consisting of standard double row bearings.
These auto bearings are available in two main types:
1) Ball-ball: With two rows of balls; WIB, BWF, WS, WK, 885000 series, etc.
2) Ball-roller: With one row of balls, one row of rollers; WIR, WN, WKH, 665000 series, etc.
