Deep Groove Ball Bearings SKF 6203 -Z

The SKF 6203-Z deep-groove ball bearing, measuring 17x40x12 mm, offers compact dimensions and single-sided protection against coarse contaminants.

The 6203-Z deep groove ball bearing combines compact dimensions with stable guidance for rotating machine components. This single-row radial ball bearing, made from standard 100Cr6 rolling-element steel, primarily accommodates radial loads as well as axial loads in both directions. A robust sheet steel cage keeps the rolling elements in an orderly arrangement during operation. Thanks to its Explorer design and enhanced dimensional and running accuracy, the bearing is suitable for industrial applications within a temperature range of -20 to +150 degrees Celsius.

What loads and mounting conditions can the 6203-Z deep groove ball bearing accommodate?

This deep-groove ball bearing is designed for rotating shafts subjected to predominantly radial loads combined with moderate axial forces. The cylindrical outer surface, without a flange or groove, allows for direct installation in precision housing bores. Thanks to the standard radial clearance, the bearing compensates for operational expansion, whilst the Explorer design contributes to smooth running behaviour during continuous rotation.

What function does the Z cover plate fulfil compared to open bearings?

The -Z designation stands for a cover plate made of sheet steel, pressed in on one side. On the closed side, this gap seal protects the bearing interior from the ingress of solid particles without causing additional friction or heat generation. The open opposite side allows lubricant from the surrounding space to be fed directly to the raceways. Compared to contact seals, this non-contact gap seal prevents increased friction losses at high speeds.