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Design Units:

Bore:

Outside Diameter:

Overall Width:

Rated Speed (Oil):

Static Radial Load:

Dynamic Radial Load:

ABEC Rating:

Seals / Shielding:

Bearing Design:

Thin-section?

Ceramic Balls?

Stainless Steel?

Plastic?

Plated?

Solid Lubrication?

Hex Bore?

Tapered Bore?

Flanged?

Snap Ring / Snap Ring Groove?

Spherical Outside Diameter?

Help with Radial Ball Bearings specifications:

Dimensions
   Design Units:      Unit designation for O.D., I.D., etc.
   Your choices are...         
   Inch       Units are inches or fractions of an inch. 
   Metric       Units such as millimeters or centimeters. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Bore
Diagram - Parts of a bearing(click to enlarge)Courtesy of GlobalSpec, Inc.
 
     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.
   Outside Diameter       Enter the outside diameter of the bearing. For housed bearings, include the housing. For flanged bearings, exclude the flange. 
   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.
   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.
   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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Operating Specifications 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.
   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 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 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.
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ABEC Rating ANSI - American National Standards Institute AFBMA - Anti-friction Bearing Manufacturers Association ABEC - Annular Bearing Engineers Committee Refer to tables below for quality standards and cross-reference to other standards organizations.  Note: Stretch window to resize table(s).
   ABEC Rating:       ABEC (Annular Bearing Engineers' Committee) ratings classify different accuracy and tolerance ranges for bearings. The higher the ABEC number the tighter the bearing tolerances. 
   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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Seals / Shielding
   Seals / Shielding:      Seals and shields provide protection from contamination and as a retainer for lubricant. Seals provide better protection and lubricant containment than shields, but have lower maximum speed capabilities.
   Your choices are...         
   None (Open Bearing)       Bearing is open; it has no seals or shields. Open bearings offer no protection from contamination or lubricant containment, but have higher maximum speed capabilities than bearings with seals or shields. 
   Single Seal
Bearing Diagram pointing out seal(click to enlarge)Courtesy of GlobalSpec, Inc.
 
     Bearing has one seal to prevent the ingress of dirt. 
   Double Seal       Bearing has two seals to prevent the ingress of dirt. 
   Single Shield
Bearing Diagram pointing out shield(click to enlarge)Courtesy of GlobalSpec, Inc.
 
     Bearing has one shield to prevent the ingress of dirt. 
   Double Shield       Bearing has two shields to prevent the ingress of dirt. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Bearing Design
   Bearing Design:       
   Your choices are...         
   Conrad / Deep Groove
Radial contact bearings (Deep Groove Bearings)Courtesy of Timken Super Precision
 
     The balls rotate in a deep groove machined into the inner and outer races. A cage maintains ball clearance and complement.  This type of bearing exhibits a good radial load capacity, a fair axial load capacity, and a fair capability to resist misalignment. 
   Double Row Deep Groove
Ball Bearing (a) (drawing)Courtesy of CCVI USA
 
     This bearing style is a modified version of the single-row deep groove ball bearing with the addition of a second row of balls. This design increases its ability to carry radial and thrust loads.  Though using the same radial mounting space as the single-row style, its increased width limits the ability of this bearing to accommodate misalignment. 
   Mast Guide Bearing       Mast guide bearings are heavy-duty bearings designed for use in forklift applications. 
   Maximum Capacity
Full Complement BearingCourtesy of Timken Super Precision
 
     Maximum-capacity bearings have a higher load capacity than the Conrad-type but diminished thrust capacity. These bearings have no cage to separate the balls. A filling slot is used to load as many balls as possible. 
   Maximum Capacity, Double Row       This bearing style is a modified version of the maximum-capacity single-row ball bearing, with the addition of a second row of balls. Maximum-capacity double-row bearings have a higher radial and thrust load capacity than single-row maximum-capacity bearings. These bearings have no cage to separate the balls.  A filling slot is used to load as many balls as possible. 
   Insert Bearing / Wide Inner Ring
Insert BearingsCourtesy of CCVI USA
 
     Insert bearings, or wide inner ring bearings, are used for mounting on shafts without the need for shoulders, locknuts, or adapters.  The bearing is locked in place through setscrews or a locking collar. They are also referred to as insert bearings. The inner ring usually extends on both sides of the bearing to provide extra shaft support. 
   Internal Self Aligning
Self-aligning Ball Bearing (drawing)Courtesy of CCVI USA
 
     A spherically-ground raceway on the bore of the outer ring allows for some limited misalignment. 
   External Self Aligning       Spherical outside diameter on outer ring mates with a ring that has a spherically-ground internal surface, allowing for limited misalignment. 
   Counterbored       Counterbored bearings have one side of one of the raceways (normally the outer ring) removed to facilitate the assembly of a greater number of balls. They are widely used in small motors. Separable inner and outer races. Sometimes called magneto bearings. 
   Other       Unlisted, unspecified, or proprietary configuration. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   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. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Special Race Material / Plating Options
   Ceramic Balls       A ceramic hybrid bearing is constructed of steel inner and outer rings with ceramic (typically Si3N4 balls in place of steel. These bearings have several advantages over all steel bearings, such as higher speed and acceleration capability, increased stiffness, higher accuracy, lower friction and heat generation, reduced lubrication requirements, low thermal expansion, extended operating life. Bearings containing all ceramic balls are also nonconductive and are commonly used in electric motor applications. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Stainless Steel       Stainless steel is chemical and corrosion resistant and can have relatively high pressure ratings. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Plastic       Any of numerous organic, synthetic, or processed materials that are mostly thermoplastic or thermosetting polymers of high molecular weight and that can be made into objects, films, or filaments. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Plated       Bearing is plated; common plating materials are cadmium and chrome. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Features
   Solid Lubrication       Solid lubricants can be used in a vacuum, in high and low temperature applications, and where oil or grease may be unsuitable. Solid lubrication bearings feature excellent oil retention and long lubrication life. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Hex Bore?       Bearing has a hexagon-shaped bore. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Tapered Bore?       Bearing has a tapered bore. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Flanged       The bearing has a flange for mounting or locating. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Snap Ring / Snap Ring Groove       Used to provide a locating shoulder when mounting bearing. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Spherical Outside Diameter       The bearing is tolerant of misalignment and has a greater load capacity than internal self-alignment, but requires more radial space. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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SilverThin Bearing Group of Mechatronics Inc.