MRO Magazine

Bearing unit does the work of four components

Bearing manufacturer NKE Austria has developed a special bearing unit for a cutter tine rotor of a power harrow for the German agricultural machinery manufacturer Lemken. This unit replaces four separ...


April 1, 2008
By MRO Magazine
MRO Magazine

Bearing manufacturer NKE Austria has developed a special bearing unit for a cutter tine rotor of a power harrow for the German agricultural machinery manufacturer Lemken. This unit replaces four separate components. Lemken’s Zirkon 10 power harrow was previously designed with a standard deep-groove ball bearing. A radial oil seal running on the inner race of a needle roller bearing and a felt seal in a metal housing were arranged next to the deep-groove ball bearing. Each of these four components had to be handled and fitted separately. NKE proposed a unit in which the external seals were already integrated into the bearing. Based on a standard deep-groove ball bearing 6212, the resulting bearing features an RS synthetic rubber seal on one side, and a radial oil seal between the outer and inner races as well as a felt seal with a metal cap on the other. It withstands such adverse conditions as mud, rain, dust, impact loads and corrosion. Global Bear