Excavator Track Rooler E215C 72203513

version

The type of roller used for a combined track is different from that used for a monolithic or rubber track: the rollers for a combined track roll on the rails, while the rollers for a monolithic or rubber track roll on the track shoes.Excavator Parts Track Roller

There are two types of rollers for combined tracks, as shown in Figure 1 below. One is a single flange and the other is a double flange. The former is easy to manufacture; Therefore, the application is more common, and the latter is rarely used. The purpose of having a flange is to prevent the track from moving laterally relative to it to prevent derailment when turning. Usually the height of the flange h=10~20 mm. In order to reduce the friction between the side of the wheel flange and the side of the guide rail, the side of the wheel flange is often made into an inclined plane, and the bevel angle α=20°~30°.Track Roller 205-30-00172

The number of rollers can make the grounding pressure of the track more uniform, so that walking on the wet and soft soil can reduce the subsidence, but on the other hand, because the length of the track is certain, the number of rollers is more, the diameter of each of them must be small, which increases the rolling resistance, generally speaking, as the crawler walking mechanism of the combine harvester, the number of rollers is often 3~4, and a few use 6.

The diameter of the roller and the pitch of the track should be roughly maintained in the following proportions.

on combined tracks

on monolithic or rubber tracks

Plain bearings are commonly used for rollers (such as iron-based powder metallurgy oil-impregnated bearings), but rolling bearings are also used. Regardless of the type of bearing, it is essential to prevent muddy water from ingress

The rim of the roller should be wear-resistant, generally made of 45 steel, and the hardness of the rim surface after quenching is not less than HRC53.205-30-00172