Spur Gears - Norfolk Bearings and Supply Company, Inc.

Hardened Alloy Steel — AO Series
Hardened Stainless Steel — SAO Series
FOR LIGHT LOADS
HIGH QUALITY HARDENED STEEL BALLS, retained in
a nylon cage.
HARDENED THRUST WASHERS, are ground both
sides to provide smooth, flat, parallel ball raceway
surfaces.
QUALITY and NUMBER OF BALLS assure high load
carrying capacity.
NYLON RETAINER assures minimum frictional losses.
C
A B C
B
A
Anti-Friction Bearings
AO/SAO Series
Thrust Ball Bearings; Ground, Unbanded
STANDARD TOLERANCES
Dimensions Tolerance
A* All +.002 to +.007
B All +.000 to –.005
C All +.000 to –.010
*AO/SAO 16 +.002 to +.010
ALL DIMENSIONS IN INCHES
ORDER BY ITEM CODE (2 WASHERS AND 1 NYLON CAGE)
Balls
Basic
Bearing
AO Series
Alloy
SAO Series
Stainless Steel
Number Diameter Number Washer Nylon Cage Washer Nylon Cage
3/16 7/16 3/16 9 1/16 AO/SAO1 06724 56807 06760 56813
1/4 9/16 7/32 10 3/32 AO/SAO5 06726 56808 06762 56814
5/16 5/8 1/4 10 3/32 AO/SAO8 06728 56809 06764 56815
3/8 11/16 9/32 12 3/32 AO/SAO10 06730 56810 06766 56816
1/2 7/8 3/8 10 1/8 AO/SAO16 06734 56812 06770 56818
Load Data
The indicated load ratings are based on 2500 hours average
life (L 50 ). To determine the load ratings at 3500 and 5000
hours, 90 percent and 80 percent respectively, of the above
ratings should be used.
Basic Thrust Capacity (Lbs.)
Bearing Revolutions Per Minute
Number 50 100 500 1000
AO/SAO1 30 25 14 11
AO/SAO5 64 56 31 25
AO/SAO8 68 60 34 27
AO/SAO10 85 72 42 32
AO/SAO16 250 125 70 58
P-1930-BG 04/10 Boston Gear 800-825-6544 193
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