NTN, the parent company of BCA Bearings, has announced the addition of 16 new product SKUs to the BCA aftermarket product line. BCA’s March 2022 release includes wheel hub assemblies and repair kits for a number of import and domestic applications and represents premium coverage for over 6.9 million vehicles in operation.
A four-point contact ball bearing makes it easy to simplify
machine designs that combine radial, thrust and moment
loads, because it can handle all three simultaneously. They
are primarily used for slow-to-moderate-speed applications,
or where oscillatory movement is predominant.
The air-oil, two-phase flow inside the multiple-point, oil-jet lubrication ball bearing was studied based on CFD (computational fluid dynamics) theory and technique, and compared with single-point, oil-jet lubrication. The results indicate that the air-oil distribution inside the bearing with multiple-point, oil-jet lubrication is more uniform than single-point injection.
For the most accurate measurements,
miniature and instrument ball bearing
dimensions should be measured with a
calibrated air gauge. A good second option is a calibrated optical comparator. On occasion, it may be necessary to use a calibrated, hand-held micrometer to double-check a measurement or for simple verification while working in the field.
At first glance, ball bearings are
relatively simple mechanisms. However,
an analysis of their internal geometries
reveals that they are quite complex. For
example, the ball to raceway conformity,
the radial play, and the number of balls all impact the ability of a ball
bearing to support loads under a variety