SKF SNH split pillow block housings: part numbers

In SNH 507-606, the letters name the series, and the pair of numbers means one housing body fits two bearing sizes from different series. It is neither two housings nor a shaft range. SNH 505 and SNH 509, on the other hand, carry a single number because no second option exists at that size.

A block after a slash may follow the size, as in SNH 507-606/VZ2P3. It marks a specific version of the same housing and belongs to the part number. As with any split housing, the designation does not cover the bearing, the sleeve or the seals.

The base and cap are machined together as a matched pair, so never combine them with halves from another housing, even one of the same size. If either part is damaged, replace the whole housing. The factory marks on the base and cap let you put them back together in the original position.

To make sure the new housing drops into the old one's place, measure the shaft center height above the base, the distance between the mounting bolt holes and the bolt diameter. If you are moving from SNH to another series, also confirm that your seals and rings belong to that series.

Send us the designation cast into the housing, including any final block, and the quantity. Add the bearing designation, the sleeve designation and the shaft diameter, and tell us whether the shaft runs through or ends inside the housing and whether the position is locating or non-locating. From that we can put together the complete list: housing, seals, rings and end cover.