Deep Groove Ball Bearings SKF 6208 -2Z

The SKF 6208-2Z deep-groove ball bearing, measuring 40x80x18 mm, combines non-contact lip seals with high-speed capability for continuous industrial use.

The single-row deep-groove ball bearing 6208 -2Z primarily accommodates radial loads as well as axial forces in both directions. Manufactured from standard rolling-element bearing steel (100Cr6) in the Explorer performance class, this design is characterised by optimised internal geometry and precise surface finishes. A guided sheet steel cage maintains a uniform spacing between the rolling elements. The design, which has no ring groove or flange on the outer ring, allows for direct installation in cylindrical housing bores at continuous speeds.

In which applications does the 6208-2Z deep groove ball bearing prove its worth?

This design is used in industrial drives and bearing arrangements that require a compact bearing solution for combined loads at medium to high speeds. The cover plates on both sides, made from profiled sheet metal, mechanically prevent the ingress of dirt particles and foreign matter. As the gap seals are non-contact, no additional frictional torque is generated during operation. Designs benefit from this configuration particularly under moderate environmental conditions, where smooth running and low heat generation are paramount.

What are the key features of the 2Z cover plates and their tolerances?

Compared with open bearings, the 2Z variant protects the internal lubricant fill from direct leakage and reduces the ingress of external contaminants. Compared with abrasive rubber seals, the gap seal allows the same rotational speeds as an open bearing. With normal radial bearing clearance and the standard tolerance class P0/PN or ABEC 1, the component is suitable for conventional shaft and housing fits. The roller bearing has no electrical insulation and covers a permissible temperature range of -20 to +120 degrees.