Super Precision and Spindle Bearings Specifications on GlobalSpec

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Bearing Type


	Bearing Type:
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	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 or 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
	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
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

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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Quality Rating

ABEC / RBEC 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.

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All matching products will have a value greater than or equal to the specified value.

Tapered Roller Bearing Class:

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.

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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-1RBEC-1	ABEC-3RBEC-3	ABEC-5RBEC-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 5PClass 5T	Class 7PClass 7T	Class 9P	Precision instrument ball bearings (Metric series)
	AFBMA/ANSI Std. 12.2	--	Class 3P	Class 5PClass 5T	Class 7PClass 7T	Class 9P	Precision instrument ball bearings (Inch series)
ISO	ISO 492	Normal classClass 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 0Class 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 InstituteISO- International Organization for StandardizationJIS- Japanese Industrial StandardsDIN- Deutsch Industrie Norm

Standard ABEC TolerancesInner Rings (all tolerances in micrometers)
BearingBore(mm)	*Bore Diameter+.00mm to**					WidthVariation				RadialRunout					Side Runoutwith Bore				RacewayRunoutwith Side				Width Inner&Outer Rings
ABECRating	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

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, extended operating life. Bearings containing all ceramic balls are also nonconductive and are commonly used in electric motor applications.
	Ceramic / Steel 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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Super Precision and Spindle Bearings Specifications

Bearing Type:

Bore Size:

Outside Diameter:

ABEC / RBEC Rating:

Tapered Roller Bearing Class:

Stainless Steel?

Plastic?

Ceramic Races?

Plated?

Rolling Element Material:

Help with Super Precision and Spindle Bearings specifications: