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Top rollers carry the chain and the track shoes, often have different wear patterns than bottom rollers. Common wear patterns of top rollers are on the running surface, flange and roller leakage. You can recognize wear by a broken or bent support, a sagged top roller axle, an improperly aligned roller or a stuck roller. If a top roller has a flat side, this means that the top roller is stuck. This is usually caused by sand and/or mud between the top roller and the undercarriage. Regular cleaning of the undercarriage is part of the daily maintenance and helps to prevent this.
Caterpillar Bulldozer Carrier Rollers D6H D6R | |
Model No. | D6H |
OEM NO. | 6Y1781 |
Material | 50Mn |
Technique | Forging |
Weight | 32.5KG |
Surface Hardness | 52-56HRC |
Hardness Deepth | 8-12mm |
Welding Operation | by ARC CO² welding |
Machining Operation | CNC machine |
Colors | Yellow or Black |
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