Control Bearings
MB500 Precision Series
Torque Tube Type

  • Extra Light duty.
  • Single row, ball.
  • This series is made of bearing quality chromium-alloy, high carbon
    steel and is not cadmium plated.
  • Open type - no seals or shields.
  • Prepacked with a preservative.
Bearing Number
Bore
Outside Diameter
Widths
d
D
B
C
+0.0000,-.0005
+0.000,-.013
+0.0000,-.0005
+0.000,-.013
+0.0000,-.0025
+0.000,-.064
+0.000,-.005 +0.00,-.13
in.
mm
in.
mm
in.
mm
in.
mm
MB538
0.625
15.875
1.0625
26.988
0.281
7.14
0.25
6.35
MB539
0.75
19.05
1.1875
30.162
0.281
7.14
0.25
6.35
MB540
0.875
22.225
1.3125
33.338
0.281
7.14
0.25
6.35
MB541
1.0625
26.988
1.5
38.1
0.281
7.14
0.25
6.35
MB542
1.3125
33.338
1.75
44.45
0.281
7.14
0.25
6.35
MB 543
1.5625
39.688
2
50.8
0.281
7.14
0.25
6.35
MB544
1.8125 (1)
46.038 (1)
2.2500 (2)
57.150 (2)
0.281
7.14
0.25
6.35
MB545
2.0625 (1)
52.388 (1)
2.6250 (2)
66.675 (2)
0.281
7.14
0.25
6.35
*MB546 (3)
2.3125 (1)
58.738 (1)
2.8750 (2)
73.025 (2)
0.281
7.14
0.25
6.35

Bearing Number
d 1
r 1 (3)
r (3)
Wt.
Radial Limit Load Rating
Thrust Limit Load Rating
Approx.
+0.015,-.000
+0.38,-.00
+0.015,-.000
+0.38,-.00
Approx.
 
in.
mm
in.
mm
in.
mm
lbs.
kg
lbs.
N
lbs.
N
MB538
0.777
19.74
0.015
0.38
0.015
0.38
0.02
0.009
3280
14600
1500
6700
MB539
0.895
22.73
0.015
0.38
0.015
0.38
0.03
0.014
3750
16600
1700
7500
MB540
1.016
25.81
0.015
0.38
0.015
0.38
0.04
0.018
4220
18600
1900
8500
MB541
1.216
30.89
0.015
0.38
0.015
0.38
0.05
0.023
5000
22400
2200
9800
MB542
1.451
36.86
0.015
0.38
0.015
0.38
0.07
0.032
5950
26500
2700
12000
MB 543
1.702
43.23
0.015
0.38
0.015
0.38
0.08
0.036
6880
30500
3200
14300
MB544
1.97
50.04
0.015
0.38
0.015
0.38
0.09
0.041
7980
35500
3600
16000
MB545
2.286
58.06
0.015
0.38
0.015
0.38
0.13
0.059
9220
41500
4000
17600
*MB546 (3)
2.527
64.19
0.015
0.38
0.015
0.38
0.15
0.068
10150
45500
4400
19600
(1) +.0000" (+.000mm), -.0008" (-.020mm).
(2) +.0000" (+.000mm), -.0007" (-.018mm).
(3) Maximum shaft or housing fillet radius which bearing corners will clear.

* Check for availability