SKF solid-base split pillow block housings: SSNLD and SSNHD

SSNLD 510-608 keeps the double number used on split housings, meaning one body fits two bearing sizes. SSNHD 510-608 is the counterpart in the SNH series. Size reads exactly as on the standard series, so the bearing, sleeve and seals match those of a regular housing with the same number.

The block after the slash tells you how the base is prepared. SSNLD 510-608/MS1 and SSNLD 216/MS2 come with anchor holes already drilled, in two different patterns; without that block the base is undrilled. Because it changes the installation work, copy it.

A standard housing is built for load directed into the base. When the load pulls up, comes from the side or arrives as shock, the cap, bolts and base are stressed differently, and the reinforced housing has the extra capacity. You will see it on heavy conveyors, crushers, large fans and equipment with rough starts.

An undrilled base lets you locate the anchors where your structure needs them and choose two or four bolts. The trade-off is careful drilling: keep the holes in the area the manufacturer specifies and support the housing well, so you do not weaken the base or distort the bearing seat.

Send the full designation, including any /MS block, and the quantity. Tell us the bearing, the sleeve and the shaft diameter, which direction the load acts and whether there is shock. If it replaces a standard housing, include the old designation and the dimensions of the existing anchors; that helps decide between a drilled and an undrilled base.