SNL and SE plummer (pillow) block housings have appropriate positions for condition monitoring sensors (fig. 1 and fig. 2).
Position 1 is a measurement point perpendicular to the shaft, and should be used when the housing is hung from its support or when loads act away from the support surface.
Position 2 is a measurement point parallel to the shaft and should be used when loads act toward the support surface. Both positions 1 and 2 are in accordance with ISO 10816-1:1995/Amd 1:2009.
Position 3 is a measurement point that is approximately 20° to 45° to the shaft axis.