SNL218 SKF Split Plummer Block Housing for 90mm Shaft
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The SKF SNL218 is a cast iron split plummer block housing designed to support compatible self-aligning ball bearings, spherical roller bearings and CARB toroidal roller bearings. Its rigid construction provides bearing support for industrial machinery, while the removable housing cap simplifies installation, inspection and maintenance.
The housing features a 160 mm bearing seat diameter, a 65 mm bearing seat width and a 100 mm centre height. Two elongated mounting holes, positioned at 290 mm centres, allow adjustment when securing the housing to its supporting surface.
Designed for grease lubrication, the housing can be configured for through-shaft or shaft-end installations using suitable sealing accessories and an end cover. V-ring, labyrinth and heavy-duty taconite seal options allow the sealing arrangement to be selected for the operating environment.
The 160 mm dimension refers to the outside diameter of the bearing accommodated by the housing. The compatible bearings listed below have a 90 mm bore; the standard TSN 218 seal arrangements require a 100 mm shaft diameter at the seals.
Technical specifications
Brand: SKF
Product designation: SNL 218
Housing type: Split plummer block housing
Housing construction: Two-piece, with removable cap
Housing material: Cast iron
Bearing bore / shaft seat diameter: 90 mm
Shaft diameter at the listed seals: 100 mm
Bearing seat diameter, Da: 160 mm
Bearing seat diameter tolerance: G7
Bearing seat width, Ca: 65 mm
Centre height, H1: 100 mm
Overall length, L: 345 mm
Overall height, H: 194 mm
Housing width, A: 140 mm
Foot width, A1: 100 mm
Foot height, H2: 35 mm
Attachment bolt centres, J: 290 mm
Number of attachment bolt holes: 2
Attachment bolt hole length, N: 28 mm
Attachment bolt hole width, N1: 22 mm
Recommended attachment bolt size: M20
Lubrication: Grease
Housing seals: Supplied without seals
Mounting arrangements: Through shaft or shaft end
Approximate net weight: 12.1 kg
Compatible bearings and locating rings
SKF 1218 self-aligning ball bearing: Two FRB 17.5/160 locating rings
SKF 2218 self-aligning ball bearing: Two FRB 12.5/160 locating rings
SKF 22218 E spherical roller bearing: Two FRB 12.5/160 locating rings
SKF BS2-2218-2CS sealed spherical roller bearing: Two FRB 8.5/160 locating rings
SKF C 2218 CARB toroidal roller bearing: Two FRB 12.5/160 locating rings
SKF 23218 CC/W33 spherical roller bearing: Two FRB 6.25/160 locating rings
These catalogue combinations locate the bearing outer ring axially. A non-locating self-aligning ball or spherical roller bearing normally requires freedom to move in the housing; CARB bearings accommodate axial displacement internally and require axial location of the outer ring. Some sealed bearing arrangements require modified shaft shoulders; check the selected bearing dimensions before assembly.
Compatible sealing accessories
V-ring seal option: SKF TSN 218 A
Four-lip seal option: SKF TSN 218 L
Labyrinth seal option: SKF TSN 218 S
Heavy-duty taconite seal option: SKF TSN 218 ND
Shaft diameter at the listed seals: 100 mm
Housing width including labyrinth seals: 158 mm
Housing width including taconite seals: 220 mm
End cover for shaft-end arrangements: SKF ASNH 218
Bearings, seals, locating rings and end covers are selected separately to suit the installation. The stated 140 mm housing width excludes the additional width of the labyrinth or taconite seals.
Available from Bearing King Ltd for industrial maintenance, bearing replacement and machinery assembly.
