Designations
The designations of SKF housings and associated components follow a system that consists of a basic designation with or without one or more prefixes and/or suffixes.
Examples and the applicable options for SDAF housings and standard SDAF extended range housings are given below.

Example
SDAF 22634 TA
| where | SDAF = | ![]() |
22634 = | ![]() |
||
TA = | ![]() |
Applicable options
![]() | Series |
S | Standard pillow block |
D | Heavy-duty series |
A | Inch dimensions |
F | Labyrinth seal |
![]() | Material |
_
| Cast iron (standard) |
D | Ductile iron (spheroidal graphite cast iron) |
S | Cast steel |
![]() | Size identification |
222(00) | Kits with spherical roller bearings with a
cylindrical bore, diameter series 2 |
223(00) | Kits with spherical roller bearings with a
cylindrical bore, diameter series 3 |
225(00) | Kits with spherical roller bearings on an
adapter sleeve, diameter series 2 |
226(00) | Kits with spherical roller bearings on an
adapter sleeve, diameter series 3 |
230(00) | Kits with spherical roller bearings with a
cylindrical bore, diameter series 0 |
230(00) KA | Kits with spherical roller bearings on an
adapter sleeve, diameter series 0 |
231(00) | Kits with spherical roller bearings with a
cylindrical bore, diameter series 1 |
231(00) KA | Kits with spherical roller bearings on an
adapter sleeve, diameter series 1 |
232(00) | Kits with spherical roller bearings with a
cylindrical bore, diameter series 2 |
232(00) KA | Kits with spherical roller bearings on an
adapter sleeve, diameter series 2 |
..20 to 96 | Size code, related to the bearing bore size |
../500 to /530 | Size code, related to the bearing bore size |
![]() | Suffixes1) | |
T | Taconite seal with contact seal or bolt-on taconite seals | |
TV | Taconite seal with V-ring | |
TA or TVA | Taconite seal with button head grease fitting | |
TB or TVB | Taconite seal with giant button head grease fitting | |
Y | One end closed (i.e. supplied with end plugs) | |
/VZ... | Special feature / modification |
- 1)When multiple suffixes are used, they are listed in the same order as shown here.