Caterpillar Bulldozer Carrier Roller D6H D6R

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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.

Description

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.
TACK offers a complete range with top rollers for both excavators and bulldozers from 0.8 to 100 tons. We produce all top rollers based on OEM specifications. The production is finished on high-tech CNC machinery with precision tools, high-grade seals and bronze bushings (bimetal).
We have designed the bottom and top rollers with reinforced flanges and unique seals.  Heat treatments make the excavator rollers or dozer rollers extra tough and thus wear-resistant. This guarantees a long service life, even with intensive use. 

Application

CATERPILLAR: 963B,963C,963D,D6H II,D6H XL,D6H XR,D6R,
CASE:1850K
CNH:D180
LIEBHERR:LR634,PR734L

Original Code

235-5974, 6Y1781, 76040857, 76090557, 87702981, AT175999, 10411554, 5802111, CR4800, 10C0073AY2

Specification

Caterpillar Bulldozer Carrier Rollers D6H D6R
Model No.D6H
OEM  NO.6Y1781
Material50Mn
TechniqueForging
Weight32.5KG
Surface Hardness

52-56HRC

Hardness Deepth8-12mm

Welding Operation

by ARC CO² welding
Machining OperationCNC machine
ColorsYellow or Black
Caterpillar Bulldozer Carrier Roller D6H D6R
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