Koyo delivers mega bearing for tunnel excavating machine

A Roller Bearing is really an extraordinary piece of mechanical engineering. The smallest types have a diameter of no more than a few millimeters and are used in dentist drilling devices with maximum rotation speeds of more than 30.000 rpm, while the largest ones are used in tunnel drilling equipment and measure more than 7 meters in diameter, while rotating at no more than a few rpm's per day.

Linked is an article about one of Koyo's mega bearings for such an application.

http://www.bearing-news.com/delivers-77m-diameter-slewing-bearing-for-one-of-japans-largest-tunnel-excavation-shield-machines/

FAQ

¿Qué es un rodamiento de Agujas?

Son rodamientos compactos que utilizan rodillos cilíndricos de pequeño diámetro y gran longitud, con forma de aguja. Se presentan como una solución económica para aplicaciones que disponen de un espacio reducido. Son una elección ideal por su gran capacidad de carga y su buen comportamiento a determinadas velocidades en comparación con su tamaño. Poseen la sección más pequeña de todos los rodamientos de rodillos.

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