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Tapered Roller Bearings Specifications

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Tapered Roller Bearing Type:

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Bore:

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Outside Diameter:

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Tapered Roller Bearing Class:

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Overall Width:

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Rated Speed (Oil):

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Static Axial / Thrust Load:

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Static Radial Load:

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Dynamic Axial / Thrust Load:

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Dynamic Radial Load:

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Thin-section?

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View Tapered Roller Bearings Datasheets

Help with Tapered Roller Bearings specifications:

Bearing Design
   Tapered Roller Bearing Type       
   Your choices are...         
   Single-Row Tapered
Taper Roller Bearings (drawing)Courtesy of CCVI Bearing Company
  		     Tapered roller bearings consist of an inner ring (cone), an outer ring (cup), a cage and rollers, which are profiled to distribute the load evenly across the roller. They have high radial and axial (thrust) load capacity at low to intermediate speeds. The thrust load capacity for single-row tapered bearings is about 60% of the radial capacity. 
   Two-Row Tapered       Two-row or double-row tapered roller bearings have increased radial load capacity compared to single-row bearings. They can also handle thrust loads from both directions. The rollers can be configured in a converging or a diverging orientation. In converging double-row tapered bearings, the contact lines of the rollers to the races converge towards the axis of the bearing rotation. This style does not appreciably increase the rigidity of the shaft mounting. In diverging double-row tapered bearings, the contact lines of the rollers to the races diverge towards the axis of the bearing rotation. This style increases the rigidity of the shaft mounting. Different configurations are also available with a single outer ring and two inner rings or two outer rings and a single inner ring. 
   Four-Row Tapered       Four-row tapered bearings consist of four rows of alternating, converging and diverging rollers. 
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Bore Size
   Bore       The bearing industry uses a standard numbering system for bearings with metric-diameter bores. If the bore is hexagonal, enter the dimension across the flats.  If the bore is tapered, enter the smaller diameter. For bore sizes 04 and up, multiply the bore size by 5 to identify the bore diameter in millimeters (mm). Refer to the table below. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Tables:         
   Bore Size (does not list all possible sizes)     

Bore Size

Dimension (mm)

00

10mm

01

12mm

02

15mm

03

17mm

04

20mm

05

25mm

06

30mm

07

35mm

08

40mm

09

45mm

10

50mm

11

55mm

12

60mm

13

65mm

14

70mm

15

75mm

16

80mm

17

85mm

18

90mm

19

95mm

20

100mm
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Outside Diameter
   Outside Diameter       Enter the outside diameter of the bearing. For housed bearings, include the housing. For flanged bearings, exclude the flange. 
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Bearing Quality ANSI - American National Standards Institute AFBMA - Anti-friction Bearing Manufacturers Association ABEC - Annular Bearing Engineers Committee RBEC - Roller Bearing Engineers Committee Refer to tables below for quality standards and cross reference to other standards organizations.  Note: Stretch window to resize table(s).
   Tapered Roller Bearing Class:
Taper Roller Bearings (drawing)Courtesy of CCVI Bearing Company
  		     The ANSI bearing class for tapered roller bearings that indicate the bearing tolerance.  Classes 4, 2, 3, 0 and 00 are for inch-series bearings. Classes K, N, C, B, and A are for metric-series bearings. 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Tables:         
          

Bearing Standard

Tolerance Class

Bearing Types

AFBMA

 

ANSI

AFBMA/ANSI Std. 20

ABEC-1 RBEC-1

ABEC-3 RBEC-3

ABEC-5 RBEC-5

ABEC-7

ABEC-9

Radial bearings (except tapered roller bearings)

AFBMA/ANSI Std. 19.1

Class K

Class N

Class C

Class B

Class A

Tapered roller bearings (Metric series)

AFBMA B 3.19 ANSI Std. 19

Class 4

Class 2

Class 3

Class 0

Class 00

Tapered roller bearings (Inch series)

AFBMA/ANSI Std. 12.1

--

Class 3P

Class 5P Class 5T

Class 7P Class 7T

Class 9P

Precision instrument ball bearings (Metric series)

AFBMA/ANSI Std. 12.2

--

Class 3P

Class 5P Class 5T

Class 7P Class 7T

Class 9P

Precision instrument ball bearings (Inch series)

ISO

ISO 492

Normal class Class 6X

Class 6

Class 5

Class 4

Class 2

Radial bearings

ISO 199

Normal class

Class 6

Class 5

Class 4

--

Thrust ball bearings

ISO 578

Class 4

--

Class 3

Class 0

Class 00

Tapered roller bearings (Inch series)

ISO 1224

--

--

Class 5A

Class 4A

--

Precision instrument bearings

JIS

JIS B 1514

Class 0 Class 6X

Class 6

Class 5

Class 4

Class 2

All types

DIN

DIN 620

P0

P6

P5

P4

P2

All types

AFBMA - Anti-friction Bearing Manufacturers Association                  (ABEC-Ball Bearings, RBEC-Roller Bearings) ANSI- American National Standards Institute ISO- International Organization for Standardization JIS- Japanese Industrial Standards DIN- Deutsch Industrie Norm
 
          

Standard ABEC Tolerances Inner Rings (all tolerances in micrometers)

Bearing Bore (mm)

Bore Diameter* +.00mm to

Width Variation

Radial Runout

Side Runout with Bore

Raceway Runout with Side

Width Inner & Outer Rings

ABEC Rating

1

3

5

7

9

3

5

7

9

1

3

5

7

9

3

5

7

9

3

5

7

9

1-3-5-7

9

0 - 10

-3

-2

-2

-1.5

-1

3

2

1

.5

3

2

1.5

1

.5

3

3

1

.5

6

3

1

.5

-50

-10

10 - 18

-3

-2

-2

-1.5

-1

4

2

1

.5

4

3

1.5

1

.5

4

3

1

.5

6

3

1

.5

-50

-20
 
         

Standard ABEC Tolerances Outer Rings (all tolerances in micrometers)

Bearing O.D. (mm)

Outside Diameter* +.00mm to

Width Variation

Radial Runout

Raceway Runout with Side

Outside Diameter Runout with Side

ABEC Rating

1

3

5

7

9

3

5

7

9

1

3

5

7

9

3

5

7

9

3

5

7

9

0 - 18

-4

-3

-2

-2

-1

4

2

1

.5

6

4

2

1.5

.5

8

3

2

.5

4

3

1.5

.5

18 - 30

-4

-3

-2

-2

-1.5

4

2

1

.5

6

4

2

1.5

1

8

3

2

1

4

3

1.5

.5
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More Specs Do not over-specify.  Enter only those loads that apply for bearing type and application.  Static and dynamic loads may not be available for all bearing types and suppliers.
   Overall Width       Enter the overall width of the bearing or bearing assembly, including the locking collar (if present). 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Rated Speed (Oil)       The rated speed for a bearing with grease lubrication is lower than that of a bearing with oil lubrication. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Static Axial / Thrust Load       Static axial (thrust) load is the maximum axial load a bearing can endure without excessive, permanent deformation. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Static Radial Load       Static radial load is the maximum radial load a bearing can endure without excessive, permanent deformation. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Dynamic Axial / Thrust Load       Dynamic axial (thrust) load is the calculated, constant, axial load which a group of identical bearings can endure theoretically for a rating life of 1 million revolutions of the inner ring. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Dynamic Radial Load       Dynamic radial load is the calculated, constant, radial load which a group of identical bearings can endure theoretically for a rating life of 1 million revolutions of the inner ring. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Thin-section       Thin-section bearings have small cross-sections with respect to their diameter. They are designed to save space, lower the weight of a design, and reduce friction.  Some thin-section bearings are also referred to as torque tube bearings. 
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