In track rollers and stud-type track rollers, balls are used as rolling elements and, like cam followers (with needles as rolling elements), they have a reinforced outer ring that serves as a running area and preferably has a spherical design so that no edge stresses arise under high loads.
Track rollers do not have a threaded end and are instead installed on a suitable axle. In addition to radial forces, they can also absorb axial forces. They are available in single-row and double-row designs..
Stud-type track rollers already have a threaded end and comprise a double-row ball bearing.
Related products: Track rollers with a raceway profile
Ball-bearing-mounted track rollers
|Series||Description||available in ABEG® performance classes|
track roller, sealed, with cylindrical running area, single-row
track roller, sealed, with cylindrical running area, double-row
stud-type track roller, sealed, with spherical running area, single-row, radius R500
stud-type track roller, sealed, with spherical running area, double-row, radius R500
stud-type track roller with thread, sealed, with spherical running area,
- 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)
konstruktiv! is our information channel for engineers and technicians: sign up for the newsletter
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/NPD/KRD: integrated contact seals; alternative designation: 2RS, DRS
KDD: integrated dust shields with a gap for low-friction motion with a limited protective effect; alternative name: ZZ oder 2Z
Note: The NUTR series has a labyrinth seal due to a seal washer sheet.
Track rollers are usually lubricated for life. The LR-5... series has lubrication hole in its inner ring that can be used to add lubricant.
Track rollers are supplied pre-greased with a universal grease as standard. Low or high-temperature greases can also be supplied on request.
Coated track rollers
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.
Various series are also available in stainless steel (AISI 440C, AISI420). Please ask us about this.