Ball Bearings ABEC Standard Tolerances Data

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A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.

Ball Bearing Operation

The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much Lower coefficient of friction than if two flat surfaces were sliding against each other.

Ball bearings tend to have Lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.

The folLowing are Annular Bearing Engineers Committee (ABEC) for ball bearings quality classes. Applications should only require ABEC 1 or ABEC 3 ball bearings. When highly precise position is required, ABEC 5 or ABEC 7 ball bearings should be specified.


Ball Bearing Cross Section
The ABEC scale is an industry accepted standard for the tolerances of a ball bearing. It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA).

There are five classes from largest to smallest tolerances: 1, 3, 5, 7, and 9. The Higher ABEC classes provide better precision, efficiency, and greater speed capabilities, but do not necessarily make the components spin faster. The ABEC rating does not specify many other critical factors, such as smoothness of the rolling contact surfaces, ball precision or quality/type of steel used.

The bearing material is not specified in the ABEC grades. Bearings not conforming to at least ABEC 1 can not be classified as precision bearings as their tolerances are too loose.

The scale is designed to alLow a user to make an informed decision about the type of bearing they are purchasing. High rated bearings are intended for precision applications like aircraft instruments or surgical equipment. Lower grades are intended for the vast majority of applications such as vehicles, mechanical hobbies, skates, skateboards, fishing reels and industrial machinery. High ABEC rated bearings alLow optimal performance of critical applications requiring very High RPM and smooth operation.

ISO's equivalent standard is ISO 492.

Bearing standards and class

BEARING CLASSES BY STANDARD ANSI Standard 20 ISO 492 DIN 620
ANSI 20 ISO 492 DIN 620
ABEC 1 Class Normal P0
ABEC 3 Class 6 P6
ABEC 5 Class 5 P5
ABEC 7 Class 4 P4
ABEC 9 Class 2 P2
Outer Ring Size Tolerances (all units are in inches)
Outside Diameter
(OD)
OD
Tolerance
W
(Outer Ring)
A
E
From
To
ABEC
1
ABEC
3
ABEC
5
ABEC
7
ABEC
1
ABEC
3
ABEC
5
ABEC
7
ABEC
1
ABEC
3
ABEC
5
ABEC
7
ABEC
1
ABEC
3
ABEC
5
ABEC
7
0
.7087
+.0000
-.0003
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0050
+.0000
-.0050
+.0000
-.0010
+.0000
-.0010
-
+.0050
-.0020
+.0000
-.0010
+.0000
-.0010
-
+.0000
-.0020
+.0000
-.0020
+.0000
-.0020
.7088
1.1811
+.0000
-.0004
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0050
+.0000
-.0050
+.0000
-.0010
+.0000
-.0010
-
+.0050
-.0020
+.0000
-.0010
+.0000
-.0010
-
+.0000
-.0020
+.0000
-.0020
+.0000
-.0020
1.1812
1.9685
+.0000
-.0005
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0050
+.0000
-.0050
+.0000
-.0010
+.0000
-.0010
-
+.0050
-.0020
+.0000
-.0010
+.0000
-.0010
-
+.0000
-.0020
+.0000
-.0020
+.0000
-.0020
1.9686
3.1496
+.0000
-.0005
+.0000
-.0004
+.0000
-.0003
+.0000
-.0002
+.0000
-.0050
+.0000
-.0050
+.0000
-.0015
+.0000
-.0010
-
-
-
-
-
-
-
-

Inner Ring Size Tolerances (all units are in inches)

Bore Diameter
ID
d
W ( Inner Ring)
From
To
ABEC
1
ABEC
3
ABEC
5
ABEC
7
ABEC
1
ABEC
3
ABEC
5
ABEC
7
0
.3937
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0002
+.0000
-.0005
+.0000
-.0005
+.0000
-.0010
+.0000
-.0010
.3938
.7087
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0002
+.0000
-.0005
+.0000
-.0005
+.0000
-.0010
+.0000
-.0010
.7088
1.1811
+.0000
-.0004
+.0000
-.0002
+.0000
-.0002
+.0000
-.0002
+.0000
-.0005
+.0000
-.0005
+.0000
-.0010
+.0000
-.0010
1.1812
1.9586
+.0000
-.0005
+.0000
-.0003
+.0000
-.0002
+.0000
-.0002
+.0000
-.0005
+.0000
-.0005
+.0000
-.0010
+.0000
-.0010

There are a number of factors cOvered by the ABEC grades. One is the eccentricity (roundness) of the track in the inner ring, which determines run-out . The references given beLow show the Max.mum eccentricity alLowable.

  • ABEC 1: 0.0075 mm (0.000295")
  • ABEC 3: 0.0050 mm (0.000197")
  • ABEC 5: 0.0035 mm (0.000138")
  • ABEC 7: 0.0025 mm (0.000098")
  • ABEC 9: 0.0012 mm (0.000047")
  • Class ABEC-1, RBEC-1
    (ISO Class Normal)
    Inner Ring
    Values given as 0.0001 inch


    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single
    bearing
    paired
    bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -3
    4
    0
    -16
    -
    2.5
    10
    0.0984
    0.3937
    0
    -3
    4
    0
    -47
    -98
    10
    18
    0.3937
    0.7087
    0
    -3
    4
    0
    -47
    -98
    18
    30
    0.7087
    1.1811
    0
    -4
    5
    0
    -47
    -98
    30
    50
    1.1811
    1.9685
    0
    -4.5
    6
    0
    -47
    -98
    50
    80
    1.9685
    3.1496
    0
    -6
    8
    0
    -59
    -150
    80
    120
    3.1496
    4.7244
    0
    -8
    10
    0
    -79
    -150
    120
    180
    4.7244
    7.0866
    0
    -10
    12
    0
    -98
    -197
    180
    250
    7.0866
    9.8425
    0
    -12
    16
    0
    -118
    -197
    250
    315
    9.8425
    12.4016
    0
    -14
    20
    0
    -138
    -197
    315
    400
    12.4016
    15.7480
    0
    -16
    24
    0
    -157
    -248

    Values given as mm

    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -8
    10
    0
    -40
    -
    2.5
    10
    0.0984
    0.3937
    0
    -8
    10
    0
    -120
    -250
    10
    18
    0.3937
    0.7087
    0
    -8
    10
    0
    -120
    -250
    18
    30
    0.7087
    1.1811
    0
    -10
    13
    0
    -120
    -250
    30
    50
    1.1811
    1.9685
    0
    -12
    15
    0
    -120
    -250
    50
    80
    1.9685
    3.1496
    0
    -15
    20
    0
    -150
    -380
    80
    120
    3.1496
    4.7244
    0
    -20
    25
    0
    -200
    -380
    120
    180
    4.7244
    7.0866
    0
    -25
    30
    0
    -250
    -500
    180
    250
    7.0866
    9.8425
    0
    -30
    40
    0
    -300
    -500
    250
    315
    9.8425
    12.4016
    0
    -35
    50
    0
    -350
    -500
    315
    400
    12.4016
    15.7480
    0
    -40
    60
    0
    -400
    -630

    Tolerance Class ABEC-1, RBEC-1
    (ISO Class Normal)
    Outer Ring
    Values given as 0.0001 inch


    Tolerance values in 0.0001 inch
    Outer Diameter
    (D)
    Outer Dia.
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -3
    6
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -3
    6
    18
    30
    0.7087
    1.1811
    0
    -3.5
    6
    30
    50
    1.1811
    1.9685
    0
    -4.5
    8
    50
    80
    1.9685
    3.1496
    0
    -5
    10
    80
    120
    3.1496
    4.7244
    0
    -6
    14
    120
    150
    4.7244
    5.9055
    0
    -7
    16
    150
    180
    5.9055
    7.0866
    0
    -10
    18
    180
    250
    7.0866
    9.8425
    0
    -12
    20
    250
    315
    9.8425
    12.4016
    0
    -14
    24
    315
    400
    12.4016
    15.7480
    0
    -16
    28
    400
    500
    15.7480
    19.6850
    0
    -18
    31
    500
    630
    19.6850
    24.8031
    0
    -20
    39
    630
    800
    24.8031
    31.4961
    0
    -30
    47
    800
    1000
    31.4961
    39.3701
    0
    -39
    55

    Values given as mm

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout Width Tolerance
    mm inch all single bearing paired bearings
    Over Incl. Over Incl. High Low Max. High Low
    2.5 6 0.0984 0.2362 0 -8 15 Identical to Width Tolerance of
    Inner Ring with same Bearing
    6 18 0.2362 0.7087 0 -8 15
    18 30 0.7087 1.1811 0 -9 15
    30 50 1.1811 1.9685 0 -11 20
    50 80 1.9685 3.1496 0 -13 25
    80 120 3.1496 4.7244 0 -15 35
    120 150 4.7244 5.9055 0 -18 40
    150 180 5.9055 7.0866 0 -25 45
    180 250 7.0866 9.8425 0 -30 50
    250 315 9.8425 12.4016 0 -35 60
    315 400 12.4016 15.7480 0 -40 70
    400 500 15.7480 19.6850 0 -45 80
    500 630 19.6850 24.8031 0 -50 100
    630 800 24.8031 31.4961 0 -75 120
    800 1000 31.4961 39.3701 0 -100 140

     

    Tolerance Class ABEC-3, RBEC-3
    (ISO Class 6)
    Inner Ring
    Values given as0.0001 inch

    Tolerance values in 0.0001 inch
    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -3
    2
    0
    -16
    -
    2.5
    10
    0.0984
    0.3937
    0
    -3
    2.5
    0
    -47
    -98
    10
    18
    0.3937
    0.7087
    0
    -3
    3
    0
    -47
    -98
    18
    30
    0.7087
    1.1811
    0
    -3
    3
    0
    -47
    -98
    30
    50
    1.1811
    1.9685
    0
    -4
    4
    0
    -47
    -98
    50
    80
    1.9685
    3.1496
    0
    -4.5
    4
    0
    -59
    -150
    80
    120
    3.1496
    4.7244
    0
    -6
    5
    0
    -79
    -150
    120
    180
    4.7244
    7.0866
    0
    -7
    7
    0
    -98
    -197
    180
    250
    7.0866
    9.8425
    0
    -8.5
    8
    0
    -118
    -197
    250
    315
    9.8425
    12.4016
    0
    -10
    10
    0
    -138
    -197
    315
    400
    12.4016
    15.7480
    0
    -16
    24
    0
    -157
    -248

    Values given as mm


    Tolerance values in micrometers
    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -7
    5
    0
    -40
    -
    2.5
    10
    0.0984
    0.3937
    0
    -7
    6
    0
    -120
    -250
    10
    18
    0.3937
    0.7087
    0
    -7
    7
    0
    -120
    -250
    18
    30
    0.7087
    1.1811
    0
    -8
    8
    0
    -120
    -250
    30
    50
    1.1811
    1.9685
    0
    -10
    10
    0
    -120
    -250
    50
    80
    1.9685
    3.1496
    0
    -12
    10
    0
    -150
    -380
    80
    120
    3.1496
    4.7244
    0
    -15
    13
    0
    -200
    -380
    120
    180
    4.7244
    7.0866
    0
    -18
    18
    0
    -250
    -500
    180
    250
    7.0866
    9.8425
    0
    -22
    20
    0
    -300
    -500
    250
    315
    9.8425
    12.4016
    0
    -25
    25
    0
    -350
    -500
    315
    400
    12.4016
    15.7480
    0
    -30
    30
    0
    -400
    -630

    Tolerance Class ABEC-3, RBEC-3
    (ISO Class 6)
    Outer Ring
    Value given as 0.0001 inch


    English
    Tolerance values in 0.0001 inch
    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -3
    3
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -3
    3
    18
    30
    0.7087
    1.1811
    0
    -3
    3.5
    30
    50
    1.1811
    1.9685
    0
    -3.5
    4
    50
    80
    1.9685
    3.1496
    0
    -4.5
    5
    80
    120
    3.1496
    4.7244
    0
    -5
    7
    120
    150
    4.7244
    5.9055
    0
    -6
    8
    150
    180
    5.9055
    7.0866
    0
    -7
    9
    180
    250
    7.0866
    9.8425
    0
    -8
    10
    250
    315
    9.8425
    12.4016
    0
    -10
    12
    315
    400
    12.4016
    15.7480
    0
    -11
    14
    400
    500
    15.7480
    19.6850
    0
    -13
    16
    500
    630
    19.6850
    24.8031
    0
    -20
    39
    630
    800
    24.8031
    31.4961
    0
    -18
    24
    800
    1000
    31.4961
    39.3701
    0
    -24
    30

    Values given in mm

    MetricTolerance values in micrometers
    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -7
    8
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -7
    8
    18
    30
    0.7087
    1.1811
    0
    -8
    9
    30
    50
    1.1811
    1.9685
    0
    -9
    10
    50
    80
    1.9685
    3.1496
    0
    -11
    13
    80
    120
    3.1496
    4.7244
    0
    -13
    18
    120
    150
    4.7244
    5.9055
    0
    -15
    20
    150
    180
    5.9055
    7.0866
    0
    -18
    23
    180
    250
    7.0866
    9.8425
    0
    -20
    25
    250
    315
    9.8425
    12.4016
    0
    -25
    30
    315
    400
    12.4016
    15.7480
    0
    -28
    35
    400
    500
    15.7480
    19.6850
    0
    -33
    40
    500
    630
    19.6850
    24.8031
    0
    -38
    50
    630
    800
    24.8031
    31.4961
    0
    -45
    60
    800
    1000
    31.4961
    39.3701
    0
    -60
    75

    Tolerance Class ABEC-5, RBEC-5
    (ISO Class 5)
    Inner Ring
    Values given in inch 0.0001

    EnglishTolerance values in 0.0001 inch
    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -2
    1.5
    0
    -16
    -98
    2.5
    10
    0.0984
    0.3937
    0
    -2
    1.5
    0
    -16
    -98
    10
    18
    0.3937
    0.7087
    0
    -2
    1.5
    0
    -31
    -98
    18
    30
    0.7087
    1.1811
    0
    -2.5
    1.5
    0
    -47
    -98
    30
    50
    1.1811
    1.9685
    0
    -3
    2
    0
    -47
    -98
    50
    80
    1.9685
    3.1496
    0
    -3.5
    2
    0
    -59
    -98
    80
    120
    3.1496
    4.7244
    0
    -4
    2.55
    0
    -79
    -150
    120
    180
    4.7244
    7.0866
    0
    -5
    3
    0
    -98
    -150
    180
    250
    7.0866
    9.8425
    0
    -6
    4
    0
    -118
    -197
    250
    315
    9.8425
    12.4016
    0
    -7
    5
    0
    -138
    -197
    315
    400
    12.4016
    15.7480
    0
    -9
    6
    0
    -157
    -248

    Values given in mm

    MetricTolerance values in micrometers
    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -5
    4
    0
    -40
    -250
    2.5
    10
    0.0984
    0.3937
    0
    -5
    4
    0
    -40
    -250
    10
    18
    0.3937
    0.7087
    0
    -5
    4
    0
    -80
    -250
    18
    30
    0.7087
    1.1811
    0
    -6
    4
    0
    -120
    -250
    30
    50
    1.1811
    1.9685
    0
    -8
    5
    0
    -120
    -250
    50
    80
    1.9685
    3.1496
    0
    -9
    5
    0
    -150
    -250
    80
    120
    3.1496
    4.7244
    0
    -10
    6
    0
    -200
    -380
    120
    180
    4.7244
    7.0866
    0
    -13
    8
    0
    -250
    -380
    180
    250
    7.0866
    9.8425
    0
    -15
    10
    0
    -300
    -500
    250
    315
    9.8425
    12.4016
    0
    -18
    13
    0
    -350
    -500
    315
    400
    12.4016
    15.7480
    0
    -23
    15
    0
    -400
    -630

    Tolerance Class ABEC-5, RBEC-5
    (ISO Class 5)
    Outer Ring
    Values given in inch

    EnglishTolerance values in 0.0001 inch
    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -2
    2
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -2
    2
    18
    30
    0.7087
    1.1811
    0
    -2.5
    2.5
    30
    50
    1.1811
    1.9685
    0
    -3
    3
    50
    80
    1.9685
    3.1496
    0
    -3.5
    3
    80
    120
    3.1496
    4.7244
    0
    -4
    4
    120
    150
    4.7244
    5.9055
    0
    -4.5
    4.5
    150
    180
    5.9055
    7.0866
    0
    -5
    5
    180
    250
    7.0866
    9.8425
    0
    -6
    6
    250
    315
    9.8425
    12.4016
    0
    -7
    7
    315
    400
    12.4016
    15.7480
    0
    -8
    8
    400
    500
    15.7480
    19.6850
    0
    -9
    9
    500
    630
    19.6850
    24.8031
    0
    -11
    10
    630
    800
    24.8031
    31.4961
    0
    -14
    12

    Values given in mm

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -5
    5
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -5
    5
    18
    30
    0.7087
    1.1811
    0
    -6
    6
    30
    50
    1.1811
    1.9685
    0
    -6
    6
    50
    80
    1.9685
    3.1496
    0
    -9
    8
    80
    120
    3.1496
    4.7244
    0
    -10
    10
    120
    150
    4.7244
    5.9055
    0
    -11
    11
    150
    180
    5.9055
    7.0866
    0
    -13
    13
    180
    250
    7.0866
    9.8425
    0
    -15
    15
    250
    315
    9.8425
    12.4016
    0
    -18
    18
    315
    400
    12.4016
    15.7480
    0
    -20
    20
    400
    500
    15.7480
    19.6850
    0
    -23
    23
    500
    630
    19.6850
    24.8031
    0
    -28
    25
    630
    800
    24.8031
    31.4961
    0
    -35
    30

    Tolerance Class ABEC-7, RBEC-7
    (ISO Class 4)
    Inner Ring
    Values in 0.0001 inch

    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -1.5
    1
    0
    -16
    -98
    2.5
    10
    0.0984
    0.3937
    0
    -1.5
    1
    0
    -16
    -98
    10
    18
    0.3937
    0.7087
    0
    -1.5
    1
    0
    -31
    -98
    18
    30
    0.7087
    1.1811
    0
    -2
    1
    0
    -47
    -98
    30
    50
    1.1811
    1.9685
    0
    -2.5
    1.5
    0
    -47
    -98
    50
    80
    1.9685
    3.1496
    0
    -3
    1.5
    0
    -59
    -98
    80
    120
    3.1496
    4.7244
    0
    -3
    2
    0
    -79
    -150
    120
    180
    4.7244
    7.0866
    0
    -4
    2.5
    0
    -98
    -150
    180
    250
    7.0866
    9.8425
    0
    -4.5
    3
    0
    -118
    -197

    Tolerance values in mm

    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -4
    2.5
    0
    -40
    -250
    2.5
    10
    0.0984
    0.3937
    0
    -4
    2.5
    0
    -40
    -250
    10
    18
    0.3937
    0.7087
    0
    -4
    2.5
    0
    -80
    -250
    18
    30
    0.7087
    1.1811
    0
    -5
    3
    0
    -120
    -250
    30
    50
    1.1811
    1.9685
    0
    -6
    4
    0
    -120
    -250
    50
    80
    1.9685
    3.1496
    0
    -7
    4
    0
    -150
    -250
    80
    120
    3.1496
    4.7244
    0
    -8
    5
    0
    -200
    -380
    120
    180
    4.7244
    7.0866
    0
    -10
    6
    0
    -250
    -380
    180
    250
    7.0866
    9.8425
    0
    -12
    8
    0
    -300
    -500


    Tolerance Class ABEC-7, RBEC-7
    (ISO Class 4)
    Outer Ring
    values in 0.0001 inch

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -1.5
    1
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -1.5
    1
    18
    30
    0.7087
    1.1811
    0
    -2
    1.5
    30
    50
    1.1811
    1.9685
    0
    -2.5
    2
    50
    80
    1.9685
    3.1496
    0
    -3
    2
    80
    120
    3.1496
    4.7244
    0
    -3
    2.5
    120
    150
    4.7244
    5.9055
    0
    -3.5
    3
    150
    180
    5.9055
    7.0866
    0
    -4
    3
    180
    250
    7.0866
    9.8425
    0
    -4.5
    4
    250
    315
    9.8425
    12.4016
    0
    -5
    4.5
    315
    400
    12.4016
    15.7480
    0
    -6
    5

    Tolerance values in mm

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    2.5
    6
    0.0984
    0.2362
    0
    -4
    3
    Identical to Width Tolerance
    of Inner Ring with same Bearing
    6
    18
    0.2362
    0.7087
    0
    -4
    3
    18
    30
    0.7087
    1.1811
    0
    -5
    4
    30
    50
    1.1811
    1.9685
    0
    -6
    5
    50
    80
    1.9685
    3.1496
    0
    -7
    5
    80
    120
    3.1496
    4.7244
    0
    -8
    6
    120
    150
    4.7244
    5.9055
    0
    -9
    7
    150
    180
    5.9055
    7.0866
    0
    -10
    8
    180
    250
    7.0866
    9.8425
    0
    -11
    10
    250
    315
    9.8425
    12.4016
    0
    -13
    11
    315
    400
    12.4016
    15.7480
    0
    -15
    13

    Tolerance Class ABEC-9, RBEC-9
    (ISO Class 2)
    Inner Ring
    values in 0.0001 inch

    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -1
    0.5
    0
    -16
    -98
    2.5
    10
    0.0984
    0.3937
    0
    -1
    0.5
    0
    -16
    -98
    10
    18
    0.3937
    0.7087
    0
    -1
    0.5
    0
    -31
    -98
    18
    30
    0.7087
    1.1811
    0
    -1
    1
    0
    -47
    -98
    30
    50
    1.1811
    1.9685
    0
    -1
    1
    0
    -47
    -98
    50
    80
    1.9685
    3.1496
    0
    -1.5
    1
    0
    -59
    -98
    80
    120
    3.1496
    4.7244
    0
    -2
    1
    0
    -79
    -150
    120
    150
    4.7244
    5.9055
    0
    -3
    1
    0
    -98
    -150
    150
    180
    5.9055
    7.0866
    0
    -3
    2
    0
    -98
    -150
    180
    250
    7.0866
    9.8425
    0
    -3
    2
    0
    -118
    -197

    values in 0.0001 mm

    Bore Diameter
    (d)
    Bore
    Tolerance
    Radial Runout
    Width Tolerance
    mm
    inch
    all
    single bearing
    paired bearings
    Over
    Incl.
    Over
    Incl.
    High
    Low
    Max.
    High
    Low
    0.6
    2.5
    0.0236
    0.0984
    0
    -2.5
    1.5
    0
    -40
    -250
    2.5
    10
    0.0984
    0.3937
    0
    -2.5
    1.5
    0
    -40
    -250
    10
    18
    0.3937
    0.7087
    0
    -2.5
    1.5
    0
    -80
    -250
    18
    30
    0.7087
    1.1811
    0
    -2.5
    2.5
    0
    -120
    -250
    30
    50
    1.1811
    1.9685
    0
    -2.5
    2.5
    0
    -120
    -250
    50
    80
    1.9685
    3.1496
    0
    -4
    2.5
    0
    -150
    -250
    80
    120
    3.1496
    4.7244
    0
    -5
    2.5
    0
    -200
    -380
    120
    150
    4.7244
    5.9055
    0
    -7
    2.5
    0
    -250
    -380
    150
    180
    5.9055
    7.0866
    0
    -7
    5
    0
    -250
    -380
    180
    250
    7.0866
    9.8425
    0
    -8
    5
    0
    -300
    -500

    Tolerance Class ABEC-9, RBEC-9
    (ISO Class 2)
    Outer Ring
    values in 0.0001 inch

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout Width Tolerance
    mm inch all single bearing paired bearings
    Over Incl. Over Incl. High Low Max. High Low
    2.5 6 0.0984 0.2362 0 -1 0.5 Identical to Width Tolerance
    of Inner Ring with same Bearing
    6 18 0.2362 0.7087 0 -1 0.5
    18 30 0.7087 1.1811 0 -1 0.5
    30 50 1.1811 1.9685 0 -1.5 1
    50 80 1.9685 3.1496 0 -1.5 1.5
    80 120 3.1496 4.7244 0 -2 2
    120 150 4.7244 5.9055 0 -2 2
    150 180 5.9055 7.0866 0 -3 2
    180 250 7.0866 9.8425 0 -3 3
    250 315 9.8425 12.4016 0 -3 3
    315 400 12.4016 15.7480 0 -4 3

    Tolerance values in micrometers

    Outer Diameter
    (D)
    Outer Dia. Tolerance
    Radial Runout Width Tolerance
    mm inch all single bearing paired bearings
    Over Incl. Over Incl. High Low Max. High Low
    2.5 6 0.0984 0.2362 0 -2.5 1.5 Identical to Width Tolerance
    of Inner Ring with same Bearing
    6 18 0.2362 0.7087 0 -2.5 1.5
    18 30 0.7087 1.1811 0 -4 2.5
    30 50 1.1811 1.9685 0 -4 2.5
    50 80 1.9685 3.1496 0 -4 4
    80 120 3.1496 4.7244 0 -5 5
    120 150 4.7244 5.9055 0 -5 5
    150 180 5.9055 7.0866 0 -7 5
    180 250 7.0866 9.8425 0 -8 7
    250 315 9.8425 12.4016 0 -8 7
    315 400 12.4016 15.7480 0 -10 8

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Spider Optimizer

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