1303ETN9 bearings Hot Sale and High Precision Self-aligning Ball Bearing 17 *47 *14

The details of Self-aligning Ball Bearing 1303ETN9:

Specification of Self-aligning Ball Bearing 1303ETN9:

Several Pictures of Self-aligning Ball Bearing 1303ETN9:

Self-aliging Ball Bearings Catalogue:

The Application of  Self-aligning Ball Bearing:

self-aligning ball bearing has two rows of balls and a common raceway in the outer ring. The bearing is consequently self-aligning and insensitive to angular misalignments of the shaft relative to the housing. It is particularly suitable for applications where considerable shaft deflections or misalignment are to be expected. Additionally, the self-aligning ball bearing has the lowest friction of all rolling bearings, which enables it to run cooler even at high speeds.

Self-aligningl ball bearing Materail:

 Basically, there are several common designs of self-aligningl ball bearing , each offering various trade-offs. They can be made from many different materials, including: stainless steel, chrome steel, and ceramic (silicon nitride (Si3N4)). A hybrid ball bearing is a bearing with ceramic balls and races of metal. Following, we will show you the material for general  self-aligning Roller Bearing  1300 self-aligning ball bearing .

GCr15:  basic material for bearing inner, outter ring and roller body

High carbon chrome bearing steel (GCr15) is the standard material for bearing rings & rolling elements, also carbon steel & stainless steel will be used upon request. The chemical composition of Gcr15 is listed in the below table.

PS: The choice of material is mainly done by the manufacturing volume and method. For large-volume bearings, cages are often of stamped sheet-metal or injection molded polyamide, whereas low volume manufacturers or low volume series often have cages of machined brass or machined steel. For some specific application, special material for coating (e.g. PTFE coated cylindrical bore for vibratory application) is adopted.

Chemical composition of bearing steel:

Interchage table for material Gcr15 in different countries:

Cage materail:

Cages are typically used to secure the rolelrs in the self-aligningl roller bearing . In other construction types they may decrease the number of roller depending on the specific cage shape, and thus reduce the load capacity. Without cages the tangential position is stabilized by sliding of two convex surfaces on each other. With a cage the tangential position is stabilized by a sliding of a convex surface in a matched concave surface, which avoids dents in the balls and has lower friction. Caged roller bearings were invented by John Harrison in the mid-18th century as part of his work on chronographs. Caged bearings were used more frequently during wartime steel shortages for bicycle wheel bearings married to replaceable cups.

♦Steel cage

Generally speaking, HF or CRC cages are pressed steel ribbon cages & pressed steel snap cages. For extra-high speed application, synthetic-resin, stainless steel, nylons will be used upon request.

♦Brass cage

For the reason of that its chemical characteristic, it mainly used for the small and medium size bearing, and some working environment with relative high temperature.

♦Nylon cage

Similiar with brass cage, the nylon cage's own chemical characteristic, it is mainly used for the working envirionment temperature of -40 to +125 degree. The post popular materail is PA66 and the buyer can choose glass fiber reinforcement added, to enhandce the strength and elasticity.

Compared with steel and brass cage, it has better precision, and light in weight, which is helpful to realized in the applciaiton of modern demand for the lightening for automobile car.