The ABEC scale is an industry accepted standard for the tolerances of a ball bearing. It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA). There are five classes from largest to smallest tolerances: 1, 3, 5, 7, and 9. The higher ABEC classes provide better precision, efficiency,[citation needed] and greater speed capabilities, but do not necessarily make the components spin faster.[1] The ABEC rating does not specify many other critical factors, such as smoothness of the rolling contact surfaces, ball precision or quality/type of steel used.

The bearing material is not specified in the ABEC grades. Bearings not conforming to at least ABEC 1 can not be classified as [precision bearings]  as their tolerances are too loose.

The scale is designed to allow a user to make an informed decision about the type of bearing they are purchasing. High rated bearings are intended for precision applications like aircraft instruments or surgical equipment. Lower grades are intended for the vast majority of applications such as vehicles, mechanical hobbies, skates, skateboards, fishing reels and industrial machinery. High ABEC rated bearings allow optimal performance of critical applications requiring very high RPM and smooth operation.

Precision ball bearings are used for high precision applications in a variety of markets, including aerospace, health, machine tool, robotics and general industry.Super precision bearings manufactured to MM/MMV tolerances combine the accuracy and performance of ABEC 9/ISO P2 with the non-critical features of ABEC 7/ISO P4 levels for cost effectiveness.

Type MMX super precision fag bearings are made to ABEC 9/ISO P2 levels and have closer tolerances and running accuracies than ABEC 7/ISO P4 tolerances. Ideal for ultra-high speed grinding spindles designed for tight dimensional tolerances and super-fine surface finishes.

Type HX delivers excellent running accuracy and are manufactured to precise ABEC9 (ISO P2) levels for runout tolerances.Ceramic hybrid angular contact ball bearings combine steel rings with ceramic rolling elements to deliver higher spindle speeds and increased dynamic radial stiffness.Ball screw support bearings are available in single- and double-row configurations and are widely used in motion control applications.

Miniature and instrument bearings are used in medical and industrial handpieces and other precision applications. Ball bearing designs include radial, angular contact, thrust and pivot.Thin section bearings are available in radial, angular contact and fractured race designs and are used in precision applications such as gimbals, rotary joints and robotics.

 

SRG is a domestic manufacturer of Precision Thin Section, Turntable and Custom Bearings. We are one of the few Thin Section providers with the capability to manufacturer bore sizes of less than 1 inch through 35 inches. We offer a full range of custom capability to meet specific performance objectives including: sub-assemblies and custom bearings with special materials, coatings, sizes, diametral fit-ups, flanges, mounting holes, seals or shields and lubricants. We often assist our customers in specifying a ina bearing with specific features to increase the performance of their equipment with industry leading value.

We have the expertise and commitment to turn your most difficult challenges into cost effective, reliable solutions. We are ready to apply our analytical and diagnostic tools to effectively evaluate performance concerns with existing equipment or solve challenging design requirements for your next application. APG offers Bearing Analysis and Design assistance based upon years of industry experience with Thin Section Bearing Parameters and Performance. We have the tools to properly predict Stiffness and Torque Performance under the most adverse operating conditions. American Precision Group manufactures Precision Thin Section Ball Bearings from .500” to 35" in diameter and small to large diameter Turntable Bearings. Thin section bearings are manufactured in three styles: radial, angular contact and 4-point contact.

580400S

801023AB

801136