Track rollers with plastic coat

Features of track rollers with plastic coat

Plastic-coadted track rollers correspond in their internal structure to single or double row ball bearings and have an outer ring sheathed with plastic (typically polyamide). The sheath is usually crowned. Optionally, the plastic-sheathed track rollers can be equipped with a combined inner ring bolt. The inner ring bolt can be designed eccentrically to set the stud type track roller against the raceway. They can support radial loads as well as axial loads and are suitable for applications in which the track rollers must run as quietly as possible. The relubrication can be optionally via holes in the inner ring or a relubrication channel in the inner ring bolt.

Load capacity

The permissible radial load Fr permissible of the track roller must not be exceeded, as the load capacity is limited by the strength properties of the plastic shell. Our service team will be pleased to provide you with information on the values for the permissible radial load capacity of the track rollers.

A ratio of Fr/Cr>0.01 is recommended for the minimum radial load capacity of track rollers. The values for the dynamic load rating Cr can be found in our product data sheets.

Bearing Clearance

The track rollers are designed in the standard with the bearing clearance class CN according to DIN 620-4.

Sealing

The track rollers are usually equipped with dust covers or RSR-.Sealing discs designed. Depending on the installation space are also Sealing systems possible.

Cages

Rollers can be equipped with Plastic or metal cages .

Materials

The deep groove ball bearings are made in your standard version from the material 1.3505 (100Cr6) and manufactured with a minimum hardness of 58 HRC. On request, corrosion protected versions are available. The material of the sheath is usually made of polyamide with glass fiber reinforcement. Depending on the application, other plastics can also be used.