Spur Gears - Norfolk Bearings and Supply Company, Inc.

ALL DIMENSIONS IN INCHES
Basic
Bearing A B C
R * Balls
Number
Radius No. Dia.
3002 1/4 11/16 1/4+ .012 6 1/8
3004 3/8 7/8 9/32 ++ .012 7 5/32
3014
3016
3/8
1/2
1-1/8 3/8 .025 7 3/16
3021
3023
1/2
5/8
1-3/8 7/16 .025 8 15/64
3028
3030
5/8
3/4
1-5/8 1/2 .025 8 1/4
3035 3/4 1-3/4 1/2 .025 8 1/4
3040
3041
7/8
1
2 9/16 .035 10 1/4
*Maximum fillet on shaft or in housing which bearing corner will clear.
+ Width SC & DC = 5/16"
++ Width SC = 11/32"
Basic Radial Capacity (Lbs.) Limiting
Bearing Revolutions Per Minute Thrust
Number 50 100 500 1800 2500 (Lbs.)
3002 150 120 70 45 40 30
3004 250 200 120 80 70 50
3014
3016
350 280 165 105 95 75
3021
3023
3028
575 460 270 175 155 135
3030
3035
650 520 305 200 180 150
3040
3041
760 605 355 230 205 185
Anti-Friction Bearings
3000 Series
Radial Ball Bearings; Semi-Ground, Single Row
Load Data
P-1930-BG 04/10 Boston Gear 800-825-6544 191
A
R
C
STANDARD TOLERANCES
Dimensions Tolerance
A All +.005 to –.000
B
11/16-1-3/4
2
+.0000 to –.0005
+.0000 to –.0006
C All ±.005
For recommended shaft and housing fits,
see engineering section, page 238.
Load ratings are provided only as a guide for bearing
selection and are not to be used for life calculation.
B
F