Super Precision and Spindle Bearings Specifications

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Bearing Type:

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Bore Size:

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Outside Diameter:

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Stainless Steel?

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Plastic?

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Ceramic Races?

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Plated?

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Rolling Element Material:

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Bearing Class:

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Tapered Roller Bearing Class:

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Other?

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Bearing Type
   Bearing Type:       
   Your choices are...         
   Radial Ball Bearing       Radial, or deep groove bearings, can take radial and axial loads to varying degrees but are used when the primary load is in the radial direction. They consist of an inner ring, an outer ring, balls and sometimes a cage to contain and separate the balls. 
   Angular Contact Ball Bearing       Angular contact bearings are designed such that a contact angle between the races and the balls is formed when the bearing is in use. The major design characteristic of this type of bearing is that one or both of the ring races have one shoulder higher than the other. In order for these bearings to function properly, they must be assembled with a thrust load. This loading (or preload) creates a line of contact (or contact angle) between the inner race, the ball and the outer race. The preload can be built in to the bearing or created when the bearing is inserted into an assembly. The contact angle varies from 15° to 40° and is measured relative to a line running perpendicular to the bearing axis. Angular contact bearings are one-directional thrust bearings that can withstand heavy thrust loads and moderate radial loads. 
   Roller Bearing       The rolling and load-bearing elements of the bearing are cylindrical in shape. A cage may be used to separate rolling elements from colliding in the raceways. 
   Thrust Bearing       Thrust ball bearings are designed for pure thrust loads. These bearings can handle little or no radial loads. The rolling element can be a ball, needle or roller. 
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Bore Diameter
   Bore Size       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. 
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   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
 
          

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
 
         

Bearing Standard

Tolerance Class

Bearing Types

ABMA

 

ANSI

ABMA/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)

ABMA/ANSI Std. 19.1

Class K

Class N

Class C

Class B

Class A

Tapered roller bearings (Metric series)

ANS B3.19 ABMA Std. 19

Class 4

Class 2

Class 3

Class 0

Class 00

Tapered roller bearings (Inch series)

ABMA/ANSI Std. 12.1

--

Class 3P

Class 5P Class 5T

Class 7P Class 7T

Class 9P

Precision instrument ball bearings (Metric series)

ABMA/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

ABMA - American 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
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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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Special Material / Plating Options
   Stainless Steel       Stainless steel is chemical and corrosion resistant and can have relatively high pressure ratings. 
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   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. 
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   Ceramic Races       Bearing races are constructed of ceramic (typically Si3N4). 
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   Plated       Bearing is plated; common plating materials are cadmium and chrome. 
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   Rolling Element Material:       
   Your choices are...         
   Ceramic       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 and extended operating life. Bearings containing all ceramic balls are also nonconductive and are commonly used in electric motor applications. 
   Ceramic / Steel Ball Combination       Fifty percent of the balls in the bearing are manufactured from ceramic and fifty percent from steel. This bearing has most of the characteristics of a bearing with all ceramic balls but is significantly less expensive. 
   Stainless Steel       Stainless steel is chemical and corrosion resistant and can have relatively high pressure ratings. 
   Steel       Rolling elements are manufactured from steel. 
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Bearing Class 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).
   Bearing Class      Many organizations have developed standards, including the American Bearing Manufacturers Association (ABMA), International Organization for Standardization (ISO) and the Deutsches Institut für Normung (DIN).  ABEC and RBEC standards are defined by ABMA Standard 20. Similar standards are defined by ISO 492, JIS B1514 and DIN 620.  ABEC bearing ratings were established by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA).  There are five classes of bearings in the ABEC rating system - 1, 3, 5, 7, and 9.  The higher the ABEC rating, the tighter the tolerances and the higher the bearing precision.  ABEC 1 bearings are designed for use in lower speed and accuracy applications. RBEC bearing ratings were established by the Roller Bearing Engineering Committee (RBEC) of the American Bearing Manufacturers Association (ABMA).  There are five classes of bearings in the RBEC rating system - 1, 3, 5, 7, and 9.  The higher the RBEC rating, the tighter the tolerances and the higher the bearing precision.  RBEC ratings apply to cylindrical roller and spherical roller bearings.  RBEC 1 bearings are designed for use in lower speed and accuracy applications. Although the specifications may differ slightly, the following equivalency can be made between ABMA, ISO and DIN bearing classes. ANSI Standard 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
   Your choices are...         
   ABEC 5 / RBEC 5 / Class 5 / P5       ABEC 5, RBEC 5, Class 5 and P5 bearings are designed for use in higher speed and accuracy applications. 
   ABEC 7 / RBEC 7 / Class 4 / P4       ABEC 7, RBEC 7, Class 4 and P4 bearings are designed for use in higher speed and accuracy applications. 
   ABEC 9 / RBEC 9 / Class 2 / P2       ABEC 9, RBEC 9, Class 2 and P2 bearings are considered super precision and are designed for use in critical, high-tech applications. 
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   Tapered Roller Bearing Class      Tapered roller bearing precision and accuracy standards determine bearing tolerances.  Many organizations have developed standards, including the American Bearing Manufacturers Association (ABMA), International Organization for Standardization (ISO) and the Deutsches Institut für Normung (DIN).  ABEC and RBEC standards are defined by ABMA Standards 19.1 (metric series) and 19.2 (inch series).  Similar standards are defined by ANSI B3.19, ISO 578, JIS B1514 and DIN 620. 
   Your choices are...         
   Class 0 / Class B / P4       Class 0 (ABMA), Class B (ISO) and Class P4 (DIN) bearings are precision grade tapered roller bearings designed for higher speed and accuracy applications than standard class bearings. 
   Class 00 / Class A / P2       Class 00 (ABMA), Class A (ISO) and Class P2 (DIN) bearings are precision grade tapered roller bearings designed for higher speed and accuracy applications than standard class bearings. 
   Class 000 / Class AA       Class 000 (ABMA) and Class AA (ISO) bearings are the highest precision grade tapered roller bearings designed for use in critical, high-tech applications. 
   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.
   Other       Other, unlisted quality rating. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Tables:         
         

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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