Hoch Qualitätslager Würzburg

Balls

Product details

Balls

The balls of the HQW spindle bearings are madeof the stainless standard bearing steel (X65Cr13). Many of our products used indemanding applications contain ceramic balls made of silicon nitride (Si₃N₄). Only balls of thetwo highest tolerance classes, grade 3 and 5, are used for HQW spindlebearings. These classes comply with the highest tolerances in terms ofdimensions, roundness and roughness.

Hybrid spindlebearing

HQW is able to fulfill particularly highrequirements with spindle bearings in the hybrid version. The inner and outerring are made of stainless steel, the balls of silicon nitride. Hybrid spindlebearings are indicated by “HYQ” in the HQW designation system. By using hybridbearings, the speed limit can be increased by up to 50%, as can be seen in thefigure below. In addition, you can achieve a significantly higher lifetime inareas where there is inadequate lubrication. Please do not hesitate to ask ourapplication engineers to what extent the respective advantages will affect yourapplication.

Advantages of hybrid bearings compared withsteel bearings

·          • Significantly higher lifetime and grease servicelife

·         •  Increase of speed by up to 50%

·         •  Higher media and corrosion resistance

·         •  Current-insulating

·         •  Non-magnetic balls

·         •  Emergency running characteristics

·         •  Low friction coefficient

·         •  Lower heat development