SNL3040 SKF Split Plummer Block Housing for 180mm Shaft
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The SKF SNL3040 is a cast iron split plummer block housing designed to support compatible spherical roller bearings and CARB toroidal roller bearings. Part of SKF’s SNL 30, 31 and 32 series, it provides a rigid bearing support for industrial machinery, while its removable housing cap simplifies bearing installation, inspection and maintenance.
The housing accommodates bearings with a 310 mm outside diameter and features a 122 mm bearing seat width and a 190 mm centre height. Its four-bolt base provides secure mounting, with elongated attachment holes allowing adjustment during installation.
When used with the bearing and adapter sleeve combinations listed below, the SNL3040 is suitable for a 180 mm shaft. Locating rings secure the bearing outer ring within the housing where axial location is required.
Designed for grease lubrication, the housing can be configured for through-shaft or shaft-end installations. Separate labyrinth and heavy-duty taconite seals allow the sealing arrangement to be selected for the operating environment.
Technical specifications
Brand: SKF
Product designation: SNL 3040
Housing series: SNL 30, 31 and 32
Housing type: Split plummer block housing
Housing construction: Two-piece, with removable cap
Housing material: Cast iron
Shaft diameter with the listed adapter sleeve: 180 mm
Bearing seat diameter, Da: 310 mm
Bearing seat diameter tolerance: G7
Bearing seat width, Ca: 122 mm
Centre height, H1: 190 mm
Overall length, L: 560 mm
Overall height, H: 375 mm
Housing width, A: 260 mm
Foot width, A1: 210 mm
Foot height, H2: 80 mm
Attachment bolt centres, J: 480 mm
Attachment bolt centres, axial direction, J1: 120 mm
Number of standard attachment bolt holes: 4
Attachment bolt hole length, N: 34 mm
Attachment bolt hole width, N1: 28 mm
Recommended attachment bolt size: M24
Lubrication: Grease
Housing seals: Supplied without seals
Mounting arrangements: Through shaft or shaft end
Approximate net weight: 97.6 kg
Compatible bearings, adapter sleeves and locating rings
SKF 23040 CCK/W33 spherical roller bearing: H 3040 adapter sleeve and 4 FRB 10/310 locating rings
SKF 23040-2CS5K sealed spherical roller bearing: H 3040 adapter sleeve and 4 FRB 10/310 locating rings
SKF C 3040 K CARB toroidal roller bearing: H 3040 adapter sleeve and 4 FRB 10/310 locating rings
The locating ring quantities shown are totals per housing for an axially located outer ring. Non-locating spherical roller bearing arrangements normally require axial freedom in the housing. CARB bearings accommodate axial displacement internally and require the outer ring to be located.
Compatible sealing accessories
Labyrinth seal option: SKF TS 40
Heavy-duty taconite seal option: SKF TNF 40
Shaft diameter for the listed seals: 180 mm
Housing width including labyrinth seals: 270 mm
Housing width including taconite seals: 327 mm
End cover for shaft-end arrangements: SKF ETS 40
Bearings, adapter sleeves, seals, locating rings and end covers are selected separately to suit the installation. The 310 mm bearing seat diameter refers to the bearing outside diameter; the combinations listed above are for a 180 mm shaft. Other shaft sizes require different bearing and accessory combinations.
Available from Bearing King Ltd for industrial maintenance, bearing replacement and machinery assembly.
