Spur Gears - Norfolk Bearings and Supply Company, Inc.

AVAILABLE AS COMPLETE ASSEMBLY, BEARING only or
HOUSING only.
INNER RACE includes 2 setscrews.
GREASE PACKED, COMPOSITION SEALED.
NYLON RETAINERS (TN) furnished as standard.
C
J
P
G
H
M
K L
N
O
S
A
B
ASSEMBLY BEARING
ONLY
Anti-Friction Bearings
6900 Series
Radial Ball Bearings; Ground, Single Row; Flange Mounted
STANDARD TOLERANCES
Dimensions Tolerance
A All +.005 to –.000
B
.9062-1.6250
2.000
+.0000 to –.0005
+.0000 to –.0006
C All +.000 to –.005
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
G Assembly* Bearing Only
Bolt +
Catalog Item Catalog Item
A B C D E F
Ctrs.
H J K L M N O P S
Number Code Number Code
.3750 .9062 5/16 11/16 .555 3/8 1-7/8 2-1/2 1-1/8 11/32 11/32 11/16 .035 8-32 5/16 .000 6906 50572 6906B 50571
.5000
1.6250
.6250
1/2 1 .995 1/2 2-7/8 3-3/4 1-7/8 7/16 11/16 1 .062 1/4-28 7/16 .010
6908
6910
50574
50576
6908B
6910B
50573
50575
.7500 1/4-28
2.0000 9/16 1-1/16 1.293 1/2 3-1/4 4-1/8 2-1/4 7/16 11/16 1-1/8 .062 7/16 1/16
1.0000 10-32
6912
6916
50578
50580
6912B
6916B
50577
50579
*Housings do not have Catalog Numbers. To order specify bearing size-housing. Example: 6906-Housing.
+ J dimension is the overall width.
Basic Radial Capacity (Lbs.)
Bearing Revolutions Per Minute
Number 50 100 500 1800
6906 305 245 140 95
6908-6910 735 585 340 225
6912 850 675 395 260
6916 1140 905 530 345
E
F
D
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.
P-1930-BG 04/10 Boston Gear 800-825-6544 189
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F