The Timken Company - Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings

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Ball – 52100 steel - heat treated - protective coated for corrosion resistance.
Race – 52100 steel - heat treated - protective coated for corrosion resistance.

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Unit of Measure

Items	GAC25S Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings – Metric - Open	GAC28S Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings – Metric - Open	GAC30S Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings – Metric - Open	GAC32S Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings – Metric - Open	GAC35S Aurora Bearing GAC…S Series, Angular Contact Spherical Plain Bearings – Metric - Open
Type	N/A Open
B - Ball Bore Dia. Max.	N/A 25.000 mm	N/A 28.000 mm	N/A 30.000 mm	N/A 32.000 mm	N/A 35.000 mm
B - Ball Bore Dia. Min.	N/A 24.988 mm	N/A 27.988 mm	N/A 29.988 mm	N/A 31.988 mm	N/A 34.988 mm
D - Race Outside Dia. Max.	N/A 47.000 mm	N/A 52.000 mm	N/A 55.000 mm	N/A 58.000 mm	N/A 62.000 mm
D - Race Outside Dia. Min.	N/A 46.986 mm	N/A 51.984 mm	N/A 54.984 mm	N/A 57.984 mm	N/A 61.984 mm
W - Ball Width Max.	N/A 15.00 mm	N/A 15.00 mm	N/A 17.00 mm	N/A 17.00 mm	N/A 18.00 mm
W - Ball Width Min.	N/A 14.76 mm	N/A 14.76 mm	N/A 16.76 mm	N/A 16.76 mm	N/A 17.76 mm
H - Race Width Max.	N/A 14.00 mm	N/A 15.00 mm	N/A 15.00 mm	N/A 16.00 mm	N/A 16.00 mm
H - Race Width Min.	N/A 13.76 mm	N/A 14.70 mm	N/A 14.70 mm	N/A 15.70 mm	N/A 15.70 mm
T - Total Width Ref.	N/A 15.00 mm	N/A 16.00 mm	N/A 17.00 mm	N/A 17.00 mm	N/A 18.00 mm
Spherical. Dia. Ref.	N/A 42.00 mm	N/A 47.00 mm	N/A 49.50 mm	N/A 52.00 mm	N/A 55.50 mm
S - Loc. Sphere Dia.	N/A .60 mm	N/A 1.00 mm	N/A 1.30 mm	N/A 2.00 mm	N/A 2.10 mm
A - End to Hole Ref.	N/A 7.50 mm	N/A 8.00 mm	N/A 8.50 mm	N/A 8.50 mm	N/A 9.00 mm
C - Ball Bore Chamfer Min.	N/A 1.00 mm
M - Race Chamfer Min.	N/A 1.00 mm
a - Misalign. Angle	N/A 2.5 º	N/A 2.0 º	N/A 4.5 º	N/A 2.0 º	N/A 4 º
Static Thrust Load Capacity	N/A 250 kN	N/A 300 kN	N/A 315 kN	N/A 354 kN	N/A 390 kN
Approx. Brg. Wt.	N/A 148 g	N/A 186 g	N/A 208 g	N/A 241 g	N/A 268 g