| A needle roller bearing is a type of bearing which | | | | the presence of thin, long cylinders which are |
| employs the use of small cylindrical rollers. These | | | | comparable to the needles that we use in sewing. |
| rollers are essential in reducing friction created in a | | | | These bearings are available in various designs and |
| rotating surface. Unlike other bearings, these | | | | are dependent on the size of the needles and the |
| needle bearings have larger surface areas which | | | | roller. |
| are attached to the outer surface of the | | | | The designs can easily be customized to make |
| bearings, very much like those seen in ball | | | | different types of needle rollers and cage |
| bearings. However, less clearance is added to | | | | assemblies. Other designs include bearings which |
| roller bearings. There is a difference in diameter | | | | are open or close ended, without flanges, with |
| and in the shaft of the needle roller and ball | | | | flanges, with inner ring, without inner ring and so |
| bearings which allow them to serve different | | | | on. For instance, inner ring needle bearings are |
| functions. | | | | first heat-treated and then finished by grinding it |
| Radial needle bearings are one type of roller | | | | to a high degree of accuracy. Inner rings are |
| bearing and have thrust needle bearings. These | | | | available in a number of dimensions and can be |
| bearings can be found in bicycles and can be | | | | employed for general use. |
| found in the part called headsets. The bearings | | | | Inner rings may be used economically as bushings |
| help absorb parallel as well as thrust power | | | | without any need of additional machining. Get hold |
| impacts which are directed at the bicycle. Such | | | | of a manual if in doubt. The manual will explain the |
| radial needle roller bearings can also be found in | | | | difference between the different types of |
| other equipment like pumps, cars and | | | | bearings you can choose from and the specific |
| compressors. | | | | purposes they play. |
| Needle roller bearings derive its name because of | | | | |