The Timken Company - Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series

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Each assembly includes the housing cap and base, cap bolts, bearing, locknut and washer, stabilizing ring, and triple ring seals.
To order pillow block housing only, use the numbers listed in the "Housing Only" column. These units include: cap, base, cap bolts, triple ring seals and stabilizing ring.
Assembly and pillow blocks described on this page constitute fixed units.
To order float units, specify part number plus suffix "Float" or "FL".
If one end closed assembly is required, specify “CL” in assembly number when ordering.
All assemblies shown are furnished in cast iron. If cast steel is desired, add the letter "S" to the alpha prefix (e.g., SDAFS 22220).

Note: Speed ratings are found in dimension tables in the spherical roller bearing section.

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Unit of Measure

Items	SDAF 22317 Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series	SDAF 22318 Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series	SDAF 22220 Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series	SDAF 22320 Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series	SDAF 22222 Inch Straight Bore Mounting Pillow Block SDAF222 and SDAF223 Series
Bearing Number	N/A 22317	N/A 22318	N/A 22220	N/A 22320	N/A 22222
Diameter S-2	N/A 3 15/16 in	N/A 4 1/8 in	N/A 4 1/2 in	N/A 4 1/2 in	N/A 4 7/8 in
Diameter S-3	N/A 3 3/16 in	N/A 3.3750 in	N/A 3.8125 in	N/A 3.8125 in	N/A 4 3/16 in
A	N/A 4.25 in	N/A 4.75 in	N/A 4.5 in	N/A 5.25 in	N/A 4-15/16 in
B	N/A 15-1/4 in	N/A 15.5 in	N/A 15-1/4 in	N/A 16.5 in	N/A 16.5 in
C	N/A 6 in	N/A 6.125 in	N/A 6 in	N/A 6.875 in	N/A 6.75 in
D	N/A 1 7/8 in	N/A 2 in	N/A 1 7/8 in	N/A 2-1/4 in	N/A 2 1/8 in
E Max.	N/A 13.125 in	N/A 13.5 in	N/A 13.125 in	N/A 14.5 in	N/A 14.5 in
E Min.	N/A 11.625 in	N/A 12 in	N/A 11.625 in	N/A 13.25 in	N/A 12.625 in
F	N/A 3.375 in	N/A 3.625 in	N/A 3.375 in	N/A 4.125 in	N/A 4 in
H¹	N/A 8.9375 in	N/A 9.4375 in	N/A 8.9375 in	N/A 10.5 in	N/A 9.875 in
Oil Level K	N/A 1.1875 in	N/A 2 in	N/A 1.75 in	N/A 2.125 in	N/A 1.875 in
L²	N/A 6.75 in	N/A 6.8750 in	N/A 6.75 in	N/A 7.625 in	N/A 7.2500 in
Y	N/A 1.8906 in	N/A 2.0469 in	N/A 1.7656 in	N/A 2.2969 in	N/A 1.9531 in
No. of Base Bolts Required	N/A 4
Size of Base Bolts Required	N/A 3/4	N/A 3/4	N/A 3/4	N/A 7/8	N/A 7/8
Bolt Hole Length	N/A 1.5 in	N/A 1.5 in	N/A 1.5 in	N/A 1.5 in	N/A 1.8125 in
Bolt Hole Width	N/A 0.75 in	N/A 0.75 in	N/A 0.75 in	N/A 0.875 in	N/A 0.875 in
Locknut	N/A AN17	N/A AN18	N/A AN20	N/A AN20	N/A AN22
Lockwasher	N/A W17	N/A W18	N/A W20	N/A W20	N/A W22
Housing Only³	N/A SDAF317	N/A SDAF318	N/A SDAF220	N/A SDAF320	N/A SDAF222
Stabilizing Ring 1 Req'd⁴	N/A SR-20-17	N/A SR-21-18	N/A SR-20-17	N/A SR-24-20	N/A SR-22-19
Triple Seal 2 Req’d at S-2	N/A LOR109	N/A LOR112	N/A LOR118	N/A LOR118	N/A LOR121
Triple Seal 2 Req’d at S-3	N/A LOR188	N/A LOR191	N/A LOR106	N/A LOR106	N/A LOR113
Assembly Weight	N/A 80 lb	N/A 92 lb	N/A 81 lb	N/A 109 lb	N/A 109 lb
Full Timken Part Number	N/A SDAF22317	N/A SDAF22318	N/A SDAF22220	N/A SDAF22320	N/A SDAF22222
C0 - Static Radial Rating	N/A 131000 lbf584000 N	N/A 148000 lbf659000 N	N/A 113000 lbf502000 N	N/A 205000 lbf910000 N	N/A 147000 lbf653000 N
C1(2) - Dynamic Radial Rating (Two-Rows)	N/A 122000 lbf543000 N	N/A 136000 lbf606000 N	N/A 97700 lbf435000 N	N/A 181000 lbf804000 N	N/A 125000 lbf555000 N
e - ISO Factor⁵	N/A 0.32	N/A 0.32	N/A 0.24	N/A 0.33	N/A 0.25
Y0 - ISO Factor⁶	N/A 2.06	N/A 2.04	N/A 2.78	N/A 2.02	N/A 2.67
Y1 - ISO Factor⁷	N/A 2.11	N/A 2.09	N/A 2.85	N/A 2.06	N/A 2.73
Y2 - ISO Factor⁸	N/A 3.14	N/A 3.11	N/A 4.24	N/A 3.07	N/A 4.06
Reference Thermal Speed Rating (Grease)	N/A 3000 rpm	N/A 2900 rpm	N/A 3100 rpm	N/A 2400 rpm	N/A 2900 rpm
Reference Thermal Speed Rating (Oil)⁹	N/A 3500 rpm	N/A 3400 rpm	N/A 3800 rpm	N/A 2800 rpm	N/A 3500 rpm
Cg - Geometry Factor¹⁰	N/A 0.0662	N/A 0.0685	N/A 0.0694	N/A 0.0746	N/A 0.0742
¹ Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ² Tolerance -0 to + 0.4 mm (-0 to +1/64 in) ³ "Housing Only" includes: cap, base, cap bolts, triple ring seals and stabilizing ring as required. When ordering non-standard housing only specify the shaft size. ⁴ Stabilizing ring is used for fixed (FX) block; do not use for float (FL) mounting. ⁵ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁶ These factors apply for both inch and metric calculations. See engineering ⁷ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁸ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁹ See thermal speed ratings in the engineering section. ¹⁰ Geometry constant for Lubrication Life Adjustment Factor a3l.