ZEN SMR105-2DUCB Kugellager (5x10x4)

For this ZEN bearing, 5x10x4 mm and a weight of 0.005 kg apply; the specification table holds the further technical particulars. This variant features stainless steel. Point contact between ball and raceway keeps frictional torque low, which is why this type runs faster and cooler than any other rolling bearing. The deep, closely conforming raceway grooves in the inner and outer ring capture the balls positively, so the bearing takes radial load and moderate axial load in both directions without a second bearing position to oppose it.

Because the ball touches the raceway at a point, friction and heat stay low — the precondition for high speeds and for grease-for-life designs. The limits follow from that same geometry: the small contact area caps load capacity against a roller bearing of equal size, and the bearing tolerates misalignment within narrow limits only, since angular error transfers straight into the raceway grooves.

Seats in shaft and housing must therefore be aligned and geometrically accurate; where shaft deflection is expected, a self-aligning type belongs in that position. The non-contact seal works with a narrow gap rather than bearing against a face: it protects better than a shield and costs less frictional torque than a contact seal. The stainless steel version is intended for damp, wet or chemically loaded surroundings and for applications demanding freedom from rust; its load ratings sit somewhat below those of standard bearing steel.

The normal radial clearance recorded corresponds to the standard class and suits ordinary fits and temperature conditions.