The Timken Company - Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series

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Each assembly includes the housing cap and base, cap bolts, bearing, bearing adapter, locknut and lockwasher, 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 23152K).

When ordering non-standard pillow block assemblies specify the shaft size.

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Unit of Measure

Items	SDAF 23248K 8-15/16 Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series	SDAF 23248K 9 Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series	SDAF 23152K 9-7/16 Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series	SDAF 23252K 9-7/16 Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series	SDAF 23152K 9-1/2 Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series
Bearing Number	N/A 23248K	N/A 23248K	N/A 23152K	N/A 23252K	N/A 23152K
Diameter S-1	N/A 8 15/16 in	N/A 9 in	N/A 9 7/16 in	N/A 9 7/16 in	N/A 9 1/2 in
A	N/A 10.25 in	N/A 10.25 in	N/A 10.25 in	N/A 12 in	N/A 10.25 in
B	N/A 35 in	N/A 35 in	N/A 35 in	N/A 38.25 in	N/A 35 in
C	N/A 13.125 in	N/A 13.125 in	N/A 13.125 in	N/A 14.75 in	N/A 13.125 in
D	N/A 3.75 in	N/A 3.75 in	N/A 3.75 in	N/A 3.375 in	N/A 3.75 in
E Max.	N/A 30.5 in	N/A 30.5 in	N/A 30.5 in	N/A 33.5 in	N/A 30.5 in
E Min.	N/A 29 in	N/A 29 in	N/A 29 in	N/A 32.75 in	N/A 29 in
F	N/A 8.75 in	N/A 8.75 in	N/A 8.75 in	N/A 9 in	N/A 8.75 in
H	N/A 20.875 in	N/A 20.875 in	N/A 20.875 in	N/A 23.4375 in	N/A 20.875 in
L	N/A 13.75 in	N/A 13.75 in	N/A 13.75 in	N/A 15.375 in	N/A 13.75 in
Bolt Hole Length	N/A 2.375 in	N/A 2.375 in	N/A 2.375 in	N/A 2 in	N/A 2.375 in
Bolt Hole Width	N/A 1.625 in
Adapter Assembly Number¹	N/A SNP-148 x 8-15/16	N/A SNP-148 x 9	N/A SNP-3152 x 9-7/16	N/A SNP-152 x 9-7/16	N/A SNP-3152 x 9-1/2
Housing Only²	N/A SDAF3248K x 8-15/16	N/A SDAF3248K x 9	N/A SDAF3152K x 9-7/16	N/A SDAF3252K x 9-7/16	N/A SDAF3152K x 9-1/2
Stabilizing Ring 1 Req'd³	N/A A5679	N/A A5679	N/A A5679	N/A A8968	N/A A5679
Triple Seal Req'd	N/A ER 914	N/A ER 828	N/A ER 891	N/A ER 891	N/A ER 842
Assembly Weight	N/A 1100 lb	N/A 1100 lb	N/A 1050 lb	N/A 1400 lb	N/A 1050 lb
Full Timken Part Number	N/A SDAF23248K8-15/16	N/A SDAF23248K9	N/A SDAF23152K9-7/16	N/A SDAF23252K9-7/16	N/A SDAF23152K9-1/2
C0 - Static Radial Rating	N/A 935000 lbf4160000 N	N/A 935000 lbf4160000 N	N/A 885000 lbf3930000 N	N/A 1090000 lbf4850000 N	N/A 885000 lbf3930000 N
C1(2) - Dynamic Radial Rating (Two-Rows)	N/A 685000 lbf3050000 N	N/A 685000 lbf3050000 N	N/A 603000 lbf2680000 N	N/A 790000 lbf3510000 N	N/A 603000 lbf2680000 N
e - ISO Factor⁴	N/A 0.35	N/A 0.35	N/A 0.3	N/A 0.34	N/A 0.3
Y0 - ISO Factor⁵	N/A 1.88	N/A 1.88	N/A 2.18	N/A 1.94	N/A 2.18
Y1 - ISO Factor⁶	N/A 1.92	N/A 1.92	N/A 2.23	N/A 1.98	N/A 2.23
Y2 - ISO Factor⁷	N/A 2.86	N/A 2.86	N/A 3.31	N/A 2.95	N/A 3.31
Reference Thermal Speed Rating (Grease)	N/A 720 rpm	N/A 720 rpm	N/A 830 rpm	N/A 650 rpm	N/A 830 rpm
Reference Thermal Speed Rating (Oil)⁸	N/A 790 rpm	N/A 790 rpm	N/A 930 rpm	N/A 710 rpm	N/A 930 rpm
Cg - Geometry Factor⁹	N/A 0.1115	N/A 0.1115	N/A 0.1162	N/A 0.1185	N/A 0.1162
¹ Includes sleeve, locknut and lockwasher. Add shaft size to order. ² "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. ³ Stabilizing ring is used for fixed (FX) block; do not use for float (FL) mounting. ⁴ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁵ These factors apply for both inch and metric calculations. See engineering ⁶ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁷ These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. ⁸ See thermal speed ratings in the engineering section. ⁹ Geometry constant for Lubrication Life Adjustment Factor a3l.