The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
Print Back
  • 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.
timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series
Unit of Measure
Items timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
SDAF 23248K 8-15/16
Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series 		timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
SDAF 23248K 9
Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series 		timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
SDAF 23152K 9-7/16
Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series 		timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
SDAF 23252K 9-7/16
Inch Tapered Bore Mounting Pillow Block SDAF231K and SDAF232K Series 		timken-SAF-pillow-block-mounted-spherical-roller-bearing-unit-4-bolt-with-4-cap-bolts
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.