Modified Stock Gearing - Boston Gear

Anti-Friction Bearings
6900 Series
Radial Ball Bearings; Ground, Single Row; Flange Mounted
AVAILABLE AS COMPLETE ASSEMBLY, BEARING only or
HOUSING only.
INNER RACE includes 2 setscrews.
GREASE PACKED, COMPOSITION SEALED.
NYLON RETAINERS (TN) furnished as standard.
F
C
J
G
H
M
K L
N
O
S
A
B
E
D
C
STANDARD TOLERANCES
Dimensions Tolerance
A All +.005 to –.000
B
.9062-1.6250 +.0000 to –.0005
2.000 +.0000 to –.0006
C All +.000 to –.005
P
F
ASSEMBLY
BEARING
ONLY
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
G Assembly* Bearing Only
Bolt +
A B C D E F H J K L M N O P S Catalog Item Catalog Item
Ctrs.
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 6908 50574 6908B 50573
1.6250 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
.6250 6910 50576 6910B 50575
.7500 1/4-28 6912 50578 6912B 50577
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 6916 50580 6916B 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
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