Deep Groove Ball Bearings SKF 6217 -2Z

The SKF 6217-2Z deep groove ball bearing, measuring 85x150x28 mm, offers reliable protection against contamination whilst primarily handling radial loads.

The 6217-2Z deep groove ball bearing is a single-row radial ball bearing made from standard 100Cr6 bearing steel, with an inner diameter of 85 mm and an outer diameter of 150 mm. With a width of 28 mm, this rolling bearing can withstand high radial forces as well as moderate axial forces. The design, which belongs to the SKF Explorer performance class, features a robust sheet steel cage and is suitable for operating temperatures between –20 and +120 degrees Celsius. The non-contacting cover plates on both sides keep foreign particles out without generating additional frictional heat during continuous operation.

In which applications does the 6217-2Z deep groove ball bearing prove its worth?

The bearing is primarily used on rotating shafts subject to predominantly radial loads and higher speeds. Thanks to the standard radial clearance and the sturdy, flangeless outer ring, the unit can be fitted precisely into standardised cylindrical housings. This design is suitable for environments where basic protection against coarse particles is required, without abrasive seals limiting the rotational speed.

What advantages do the 2Z cover plates offer in bearing arrangements?

The suffix -2Z denotes cover plates pressed in on both sides, made from profiled sheet steel, which form a narrow gap with the inner ring shoulder. This gap seal minimises lubricant leakage and protects the raceways from dry contaminants. As the sheet metal discs operate without contact, the frictional torque remains low, which prevents thermal losses and allows for use at temperatures up to +120 degrees Celsius. For applications involving direct contact with liquids, however, contact seals are preferable.