Split pillow blocks, SDAF series including the extended range (inch dimensions)

All SDAF housings, which include the SDAF extended range, are heavy-duty split pillow (plummer) block housings designed for tough operating conditions where heavy loads and shock loads require a housing that is exceptionally sturdy. All SDAF housings are made to order.

SDAF housings can accommodate bearings in the 22 and 23 dimension series for shaft diameters ranging from 2 15/16 to 9 9/16 inches. SDAF extended range housings can accommodate bearings in the 30, 31 and 32 dimension series for shaft diameters ranging from 8 15/16 to 20 inches and larger. Housings in the extended range are typically customized to meet the needs of a particular application.

Bearing types

Spherical roller bearings

CARB toroidal roller bearings 

Bearing dimension series

22, 23 (SDAF)

30, 31, 32 (SDAF extended range)

Shaft diameter range

2 15/16 to 9 9/16 in. (SDAF) 

9 in. and larger (SDAF extended range)

Typical shaft-bearing combinations

Plain shaft with bearing on an adapter sleeve 

Stepped shaft with bearing on a cylindrical seat

Seals

Labyrinth

Contact

Heavy-duty

Lubrication

Grease 

Oil

Materials

Grey cast iron 

Ductile iron (Spheroidal graphite cast iron)

Cast steel

Mounting

Four-bolt mounting

Compliance to standards

Not standardized