Tare da tsari biyu na silinda ko kuma masu zagaye da kuma masu riƙewa da aka yi da takardar ƙarfe ko resin roba, bearings suna da alaƙa da hanyoyin tseren zoben waje masu siffar zagaye waɗanda ke ba da damar daidaitawa tsakanin zoben ciki da zoben waje a cikin digiri 3, don rama kurakuran da suka shafi daidaituwa da karkacewa.
