INA ZKLN4075-2RS-2AP-XL = 2 pcs. Schrägkugellager (40x75x68)

As an axial angular contact ball bearing, this bearing carries high axial loads at elevated speeds, e.g. for ball screws. This INA bearing measures 40x75x68 mm and weighs 1.286 kg; the specification table carries the supplementary technical details. The axial angular contact ball bearing is built for axial load with high running accuracy — the inclined contact line makes the position axially stiff.

The balls run between washers whose raceways are inclined so that the line of force action is predominantly axial. The position therefore takes axial load with high stiffness and holds the shaft closely in place — the reason this type is used where the accuracy of axial guidance decides the function of the whole assembly. It carries only a small amount of radial load, so an adjacent radial position belongs to the design.

Achievable stiffness depends directly on the setting, either adjusted on assembly or fixed by the design. Flatness and squareness of the seating faces are critical in axial types, because a tilted seat translates directly into uneven load distribution across the ball set. Rings and rolling elements are made of through-hardened standard bearing steel.