Spherical Roller Bearings Specifications

Help with Spherical Roller Bearings specifications:

Bearing Design


	Special Application:
	Your choices are...
	Airframe / Aircraft Control		Aircraft control and airframe bearings are especially designed to meet the demands of aerospace applications. They can be of ball, roller or needle roller construction. Most aircraft control and airframe bearings are manufactured to U.S. government military (MIL-SPEC) standards.
	Aerospace		Bearings designed for aerospace applications such as jet engines and helicopters.
	Agriculture		Bearings designed for agriculture equipment and environments.
	Automotive		Bearings designed for the automotive industry.
	Ball Screw Support		These bearings are specifically designed for use in ball screw or lead screw applications. Most ball screw support bearings are angular contact bearings with a steep contact angle, such as 60°, and are available in duplex, triplex and quadruplex configurations. Other designs include bearings containing separate thrust and radial roller bearings in a single assembly. Cartridge designs are also available that include a housing, seals and bearings.
	Instrument / Miniature		Instrument and miniature bearings are small deep groove or angular contact bearings. They are used in applications requiring very small bearings, such as dental drills and computer disk drives.
	Medical /Dental		Bearings specially designed for medical or dental equipment.
	Military		Bearing manufactured in accordance with the U.S. government standards, as dictated by the appropriate military specifications.
	Pump		These bearings are designed for the conditions found in pumps, including high loads, poor or degraded lubrication and high operating temperatures.
	Spindle / Super Precision		These are high precision bearings intended for use in machine tool spindles.
	Sporting and Consumer Goods		Bearings designed for the sporting and consumer goods market. Products in the sector include inline skates, skateboards and fishing reels.
	Other		Other, unlisted application.
	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 Size

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

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

Outside Diameter


	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.

Width


	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.

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 (Grease)		The maximum permissible operating temperature with respect to the lubricant used and the material of the bearing components determine the rated speed of a bearing. The speed at which this limiting temperature is reached is dependent upon the frictional heat generated and the amount of heat that is dissipated. The rated speed is usually provided for a specific lubrication (grease or oil). The manufacturer should be consulted to obtain rated speeds for different lubrication methods.
	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 one 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 one 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.

	Operating Temperature:		This is the full required range of ambient operating temperature.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.

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 1 / RBEC 1 / Class 0 / P0		ABEC 1, RBEC 1, Class 0 and P0 bearings are designed for use in lower speed and accuracy applications.
	ABEC 3 / RBEC 3 / Class 6 / P6		ABEC 3, RBEC 3, Class 6 and P6 bearings are designed for use in lower speed and accuracy applications.
	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.
	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.

Special Material / Plating Options


	Rolling Element Material:
	Your choices are...
	Polymer		A polymer is a solid, nonmetallic compound of high molecular weight, the structure of which is composed of small repeat units (mers). Plastics and elastomers are polymers.
	Steel		Rolling elements are manufactured from steel.
	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.
	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.

Lubrication Options The most common bearing lubrications are grease or oil. Consult supplier for the best lubrication for an application.



	Your choices are...
	Prelubricated		Bearing is prelubricated from the factory. Bearings with seals and shields usually are pre-lubricated with grease.
	Relubricatable		This applies to sealed bearings only. Relubricatable bearings have provisions for relubricating the bearing (usually with grease) without removing the seals.
	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:		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.