Track rollers
Ball-bearing-mounted track rollers
| Series | Description | available in ABEG® performance classes | |||
|---|---|---|---|---|---|
LR-2...-NPP(U) | track roller, sealed, with cylindrical running area, single-row |  |  |  | |
LR-5...-NPP(U) | track roller, sealed, with cylindrical running area, double-row | | | | |
ZL-2...-NPDU | stud-type track roller, sealed, with spherical running area, single-row, radius R500 | | | | |
ZL-52...-KRDU | stud-type track roller, sealed, with spherical running area, double-row, radius R500 | | | | |
KR-52...-KRDU | stud-type track roller with thread, sealed, with spherical running area, | | | | |
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/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.
Note:
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.