Track rollers with a raceway profile / Track roller with profiled outer ring
Running rollers with a raceway profile have balls as rolling elements and an optimized V groove incorporated into the outer ring. Hardened shafts serve as parallel partners. In addition to radial forces, they can also absorb axial forces.
- Bearing clearance classes C2, CN, C3 and C4
- | Fa - axial load
- | Noise test by decibels
- | Noise test by vibration level for deep groove ball bearings
- | Noise test by vibration level for tapered roller bearings
- | P - dynamic equivalent load
- | PN/P0 tolerance class for radial bearings (without tapered roller bearings)
Technical information
Inadequate sealing can allow external environmental conditions to have an extremely negatively impact on running characteristics and thus a bearing’s service life. For this reason, bearings must be protected by seals.
At the same time, seals also prevent lubricants from leaking.
NPP: integrated contact seals; alternative designation 2RS, HRS
KDD: integrated dust shields with a gap for low-friction motion with a limited protective effect; alternative name ZZ or 2Z
Track rollers are usually lubricated for life.
Note:
Track rollers are supplied pre-greased with a universal grease as standard. Low or high-temperature greases can also be supplied on request. The LFR-5... series has no lubrication hole in its inner ring that can be used to add lubricant.
Coated track rollers with profiled outer ring
The manufacturer Schaeffler offers its products with its special "Corrotect" coating. We also supply designs with a zinc-iron (ZnFe) and a zinc-nickel coating.
Please indicate the desired resistance time in the salt spray test in hours, on the basis of which we will be able to select the necessary coating type.
Stainless steel
Various series are also available in stainless steel (AISI 440C, AISI420). Please ask us about this.
