Design of associated components
PinsSupport rollers generally operate under conditions of stationary inner ring load. For this type of load, and if easy displacement of the inner ring is required, the pin or shaft should be machined to tolerance class g6.
The recommended pin tolerance class for support rollers without an inner ring is k5. To exploit the full load carrying capacity of support rollers, the raceways on the pins should have the same hardness and surface finish normally found on bearing raceways.
For additional information, refer to the section Raceways on shafts and in housings.
Support surfacesThe outer ring support surfaces of support rollers without flange rings must be fine turned, free of burrs and clean. Unhardened surfaces should extend to at least half the outer ring side face (fig. 1) while hardened surfaces may be smaller.
Heavily loaded support rollers with flange rings should be axially supported over the entire flange ring side faces (fig. 2) and the support surface should be dimensioned according to diameter d1 (→ product tables).
Axial gapSupport rollers without flange rings, but with inner rings and support rollers with flange rings must be located without axial gap (fig. 2).
Support rollers without an inner ring must have an axial gap ≥ 0,2 mm between the outer ring and the support surfaces (fig. 1).