NEWS

NTN on needle roller bearings

<p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> There are many types of bearings, the most common being ball bearings, or tapered roller bearings, cylindrical or spherical roller bearings. Their design meets specific technical requirements to adapt to particular use. Among them, less known, is the needle roller bearing, which is nevertheless essential in certain applications where the requirements in terms of reliability and durability are high. Discover the hidden side of needle roller bearings that fit into many mechanisms. <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> <p align="center" style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> <img alt="" src="http://www.bearing.com.cn/membcentre/editor/attached/image/20190123/20190123144822_64662.jpg" /> <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> What’s special about it? Rolling elements used are shaped like needles, hence the name. These steel needles, with round or flat tips, have a diameter less than or equal to 5 mm, and their length must be at least 3 times greater than their diameter. <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> The bearing supports very heavy loads thanks to the contact surface developed by the needles which are mounted in a steel or moulded polyamide cage. <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> It enables extremely compact assemblies and is the first choice bearing when looking for a good compromise between performance, size and weight. <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> A needle roller bearing is thus able to withstand 2 to 8 times more load than ball bearings or cylindrical roller bearings of the same shaft diameter, all this in a small space. <h3 style="margin:0px 0px 15px;padding:0px;color:#313131;text-transform:none;line-height:1.2;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:24px;font-style:normal;font-weight:700;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> For which use? </h3> <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> Depending on the sector of activity and the application, needle roller and cage assembly can be integrated between rings that stiffen the assembly and ensure the connection between the various mechanical parts. Needle roller bearings are therefore available in many forms (cages, bushings, bearings with solid rings, combined bearings, needle thrust bearings, cam followers, etc.) to meet all the technical constraints of the industrial markets. <p style="margin:0px 0px 30px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> These bearings that combine robustness, precision, and endurance concern all industrial markets and are very much present especially in: <ul style="margin:0px 0px 30px 40px;padding:0px;color:#313131;text-transform:none;text-indent:0px;letter-spacing:normal;font-family:"Open Sans", sans-serif;font-size:16px;font-style:normal;font-weight:300;word-spacing:0px;white-space:normal;box-sizing:inherit;orphans:2;widows:2;background-color:#FFFFFF;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> <li style="list-style-type:disc;box-sizing:inherit;"> Automobiles, </li> <li style="list-style-type:disc;box-sizing:inherit;"> Two-wheelers, </li> <li style="list-style-type:disc;box-sizing:inherit;"> Portable tools (drills, chainsaws,…), </li> <li style="list-style-type:disc;box-sizing:inherit;"> Construction machinery, </li> <li style="list-style-type:disc;box-sizing:inherit;"> Pumps and motors. </li> </ul>

23 Jan,2019