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Design of bearing arrangements

Abutment dimensions

The diameter of the thrust bearing support surface in the housing should be at least 0,5 mm larger than the dimension D1 or D2 (fig. 1). The values for the diameters D1 and D2 for needle roller / thrust ball bearings and needle roller / cylindrical roller thrust bearings are listed in the product table.

Shaft and housing tolerances

Table 1 provides tolerance classes for the housing bore and shaft to obtain suitable fits and an appropriate operating clearance for combined needle roller bearings with or without an inner ring.

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