Crawler crane Demag CC280-1 top roller

CC280-1 top roller (also called upper rollers, top rollers) are mounted on the track frame and secured to a support platform. It is used to attach running shoes. Adds excitement to track shoes. and keep shoes upright. If the Crawler crane Demag CC280-1 top roller breaks, the crawler  cannot go straight. This will affect performance.

1.   Details

Product Name:  Upper Roller

Material: 40Mn2

Technique: Forging

Heat treatment: complete hardening and hardening, surface hardening.

Warranty: 2000*3600 working seconds

2. TOP ROLLER USES:

When top roller worn out to extreme dimensions, you can repair by welded, or even replace new top roller

1).Hold up the track shoes assy, and make the crawler shoes has a certain tension.

2).Keep the track shoes assy straight. If top roller is broken down, the Crawler can’t keep straight to walk, which will effect the work efficiency.

So, we must choose high quality Top roller to replace, OEM / Original is the best. Our top roller material is 40Mn2, production technique is forging, heat treatment is whole quenching and tempering, and surface hardening, hardness is HR40-50.

3.Suitable brands of crawler crane:

As a professional supplier of undercarriage parts, We not only supply top roller, but also produce optional undercarriage parts for many brands of  Crane, such as  bottom rollers, tracks, idlers and sprockets. These parts are always in stock.

4. Performance testing

5. COMMON TYPE OF TOP ROLLER FAILURE

1) The roller body worn

The reason for this situation is that the material steel is not qualified or the hardness of heat treatment is low and the wear resistance is insufficient.

2) Oil spill

Top roller shaft is rotated through the bushings, and the roller body needs to be lubricated with oil. If the sealing ring is not good, it is very easy to oil leakage. Then, the shaft and bushings are easy to wear out without lubrication, leads to top roller unable to be used.

If you're satisfied with the quality upper rollers for Demag CC280-1 lattice boom crawler cranes, don't hesitate to place orders any more. As one of the leading undercarriage parts suppliers in China, we can promise the high quality and reliable performance.