Features and benefits
SNL and SE plummer block housings in the 2, 3, 5 and 6 series have the following features and benefits:
The housing base is reinforced with ribs and has additional material surrounding the holes for the attachment bolts (fig. 1). The attachment bolts can be preloaded to locate the housing without deforming the housings base or bore.
New design SE housings are even stronger and more robust. The reinforcing ribs are bigger (fig. 2) and the housings use a stronger material grade compared to SNL housings.
Good heat dissipation
Additional ribs in the housing base (fig. 3
) increase the contact area between the housing base and the support surface to improve the heat flow from the bearing outer ring to the support surface.
For SE plummer block housings the contact area of the ribs around the perimeter and in the centre is even larger (fig. 4
Grease guiding system
For more efficient relubrication from the side, SNL housings from sizes 216 and 516-613 upwards and SE housings from size 507 upwards have an integrated flange that guides grease from the grease fitting directly to the bearing (fig. 5
). This can reduce grease consumption and disposal costs.
Caps and bases individually marked
The housing cap and base are matched during manufacture and are not interchangeable with the caps and bases of other housings. To prevent any mismatches, a unique serial number is marked on both the housing cap and the base (fig. 6
and fig. 7
For SE housings the designation on the housing cap has also been enhanced for readability and now contains the complete housing designation, i.e. with variant suffixes, for better traceability (fig. 8
Dimples to locate accessories
Dimples cast into the housing cap indicate where grease fittings and condition monitoring sensors can be mounted for maximum effectiveness (fig. 9
and fig. 10
To simplify mounting and make alignment more accurate, lines indicating the centre of the bearing seat and housing bore axis are cast into the housing base. Dimples indicate the position for dowel pins (fig. 11
and fig. 12
). Mounting instructions are supplied with each seal pack. For SE housings the grease fitting kit contains torque values for the cap bolts and data for initial grease fills.
Housings from size 524-620 and above are supplied with an eye bolt on the cap for safe and easy handling.
SNL and SE housings have a pry slot between the cap and base to ease removal of the cap during dismounting (fig. 13
and fig. 14