Angular contact bearings were created so that a contact angle in between the races and also the balls is formed once the bearing is in use. The main design feature of angular contact bearing is usually that one, or both of the ring races have one shoulder relieved, or higher compared to other. To ensure that angular contact bearings to operate properly, they ought to be assembled which has a thrust load. This loading (or preload) results in a line of contact (or contact angle) in between the inner race, the ball and also the outer race. The preload could be constructed into the bearing or created while the bearing is placed into an assembly. The contact angle differs from 15 degree to 40 degree and it is calculated relative to a line running perpendicular to the bearing axis. Angular contact bearings are unidirectional thrust bearings which could withstand heavy thrust loads and reasonable radial loads.
Important dimensions to think about when looking for angular contact bearings consist of design units, bore, outside diameters, and outer ring width. Design and style units could be either in inches or metric units. Some suppliers might identify parts in both. The bearing industry utilizes a standard number system for bearings with metric diameter bores. For bore sizes 04 or over multiply by 5 to get the bore in millimeters. If the bore is a hex go into the dimension across the flats. If the bore is tapered go into the smaller diameter. The external diameter of the bearing consists of the housing in case a housed unit, but excludes the flange if a flanged bearing.
Angular contact bearings may have a various types of seals or shielding. Seals and shields offer protection from contamination and also as a retainer for lubricant. Seals have better protection and lubricant containment than shields, but have lower optimum speed capabilities. Types include single seal, double seal, single shield, and double shield. Angular contact bearing might be made of special materials including stainless steel, plastic, and ceramic hybrid. They can also be plated; common plating materials are cadmium and chrome.
Bearing design for angular contact bearing may be one directional thrust, double direction thrust, double row, double row maximum capacity angular, duplex thrust, and four-pointed contact. Thin-section bearings have small cross-sections with regards to their diameter. Bearings with ball screw support have been developed specifically for use in ball screw or lead screw applications. Some bearings can also be flanged. Angular contact bearings could have a various lubrication options. They might be relubricatable, prelubricated, and solid lubrication.
Angular contact ball bearings have raceways within the inner and outer rings which are displaced with regards to one another in direction of the bearing axis. Which means that they're made to support combined loads, for example concurrently acting radial and axial loads.
The axial load having capacity of angular contact ball bearing increases with increasing contact angle. The contact angle is described as the angle between the line joining the points of contact in the ball and the raceways inside the radial plane, along that the load is transmitted in one raceway to another one, and also a line perpendicular to the bearing axis.
Angular contact ball bearing is made in a wide selection of designs and sizes, the following is the most common types
Single row angular contact ball bearings
Double row angular contact ball bearings
Four-point contact ball bearings
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