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Angular Contact Bearings

Due to their internal design, angular contact ball bearings can withstand high radial-axial loads and reach high speeds. They are asymmetrical for manufacturing reasons and can withstand unidirectional axial loads only. Angular bearings are usually mounted in a group of two or more opposed preloaded units with rigid or elastic spacers. Typically, the inner and outer raceways and balls are made of chrome steel. Where operating conditions are severe, bearings may have ceramic balls creating a hybrid bearing.

Single Versus Double Row Angular Contact Ball Bearings：

SINGLE ROW ANGULAR CONTACT

Single row angular contact ball bearings feature raceways with high and low shoulders. These opposing raceways are designed to carry thrust load in one direction. NTN can preload the bearings at the factory so that the correct load will develop once the bearing is put into service. The bearings in this series are assembled with a specific internal clearance, so that they will have a specified contact angle under load. The standard contact angle used by NTN is 30° but, in many cases, a 40° contact angle can also be specified. We also offer special high-speed bearings with phenolic resin cages with a 15° contact angle.

DOUBLE ROW ANGULAR CONTACT

Double row angular contact ball bearings have an inner and outer ring with a double raceway. The two rows are so related that the contact angle is similar to a pair of back-to-back single row bearings. NTN’s 5200 and 5300 series offer continuous races and can carry thrust loads in either direction. The 3200 and 3300 series have filling slots, so it is necessary to mount them with the thrust load acting against the un-notched face of the rings.

As previously mentioned, "angular contact bearings" are usually mounted in a group of two or more opposed preloaded units with rigid or elastic spacers. This can bee done by matching up multiple single row bearings or by utilizing double row angular contact bearings which may offer some econmic benefits.  However, utilizing multiple single sow angular contact ball bearings can offer greater design flexibility and performance in many cases.  For information about the more than 100 different double row angular contact bearings available from AST please visit our web page entitled, "Double Row Angular Contact Ball Bearings."

Tremendous Selection of Angular Contact Bearings from AST.

AST supplies more than 550 single-row, precision, Angular Contact Bearings in its online catalog with bores ranging from as small as 10.0 mm and as large as 280 mm. Standard contact angles of deflection include: 15, 20, 25, 30, and 40 with other custom angles available to meet special applications. Furthermore, ceramic and special SV30 stainless steel materials are also available to maximize performance.