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SKF spacing washers

ZW spacing washers (fig 1) are required when an open bearing with Z sealing washers at both sides is to be relubricated (fig 2 and fig 3). They should be mounted at one side of the bearing adjacent to the inner as well as the outer ring.
fig 1
fig 2
fig 3
The ZW spacing washers are made of phosphated sheet steel and are coated with a preservative. The thickness of the sheet steel is 0,6 mm for washers up to and including ZW 35 × 42 and 0,8 mm for the larger sizes.

Tolerances

The width of the spacing washer set is 2 ± 0,1 mm. The outside diameter has minus tolerances and the bore plus tolerances.

Designation

The spacing washers are designated ZW d1 × d2, e.g. ZW 35 × 42 has a bore diameter of 35 mm and an outside diameter of 42 mm.
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