Combined bearings adjustable by screw for precision steel sections
The combined bearings are manufactured according to the Unified Parameters which govern a correct execution of rolling bearings.
This series can be supplied both in relubricable version and in the sealed performance. The outer rings are normally scheduled in correct convex performance to counteract the inevitable geometrical errors originating from the coupling with the guideways in which they roll.
The axial adjustment of 1 or 2 degrees provides the recovery of the clearances arising from the heavy applications of the lift trucks.
The axial part, in plastics, can be used in case of limited rolling speed. Bearings are greased at source with grade “3” lithium base grease.
For special performances, as the use of these bearings at high temperatures, please inquire our office.
General Specifications
Materials
Outer races: Steel UNI 20MnCr5 casehardened
and tempered with final surface hardness 60±2 HRc
Inner races: UNI 100Cr6 tempered and annealed steel with surface hardness equal to 60±2 HRC
Rolling bodies: UNI 100Cr6 tempered and annealed steel with surface hardness equal to 62±2 HRC
Main pin: Steel UNI Fe52C annealed to be easily welded
Tolerances: According to DIN 620 standard
Precision class: Compliant with PN class
Tip clearances: According to DIN 620 standard
Load factors: Calculated in compliance with ISO 76 and ISO 281 standards
Alternative designs:
– bearings for high and low temperatures applications
– bearings for applications in aggressive environments
– tailor-made based on customer’s drawing
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