Knowledge

Excavator Undercarriages Information

How Do You Transport a Crawler Excavator Safely?
Transport a crawler excavator safely by matching the trailer to the machine, loading it level and centered, then securing it with rated chains to structural points on the track frame...
Does the CAT 277-8576 Fit Your Excavator?
The CAT 277-8576 carrier roller fits select Caterpillar mini excavators, but exact compatibility depends on the machine model and serial number. For fleet managers and buyers, the safest approach is...
How to Choose the Right CAT Carrier Roller?
The right carrier roller keeps your CAT excavator moving by supporting the upper track run, reducing vibration, and preventing premature wear. For fleet managers and procurement teams, a well-matched aftermarket...
How Can You Measure Undercarriage Wear?
You can measure excavator undercarriage wear with a tape measure, caliper, and a wear chart by checking rail height, roller diameter, chain pitch, bushing condition, and track sag. The key...
Why Use Hunting Tooth Sprockets?
A hunting tooth sprocket reduces cyclic wear by changing which chain links contact which teeth over time. With an odd-numbered tooth count, the wear pattern shifts continuously instead of repeating...
How Do You Replace a Bobcat 331 Carrier Roller?
A worn Bobcat 331 or 337 carrier roller can create track sag, noise, vibration, and accelerated undercarriage wear. The repair is straightforward: support the machine safely, release track tension, remove...
Does CAT 266-8794 Fit Your Mini Excavator?
CAT 266-8794 is a carrier roller used on several Caterpillar mini excavators, especially 303.5 and 304-series machines. The safest way to confirm fitment is to match the machine model, serial...
How Do You Replace a CAT 277-8576 Carrier Roller?
A worn CAT 277-8576 carrier roller should be inspected for noise, oil leakage, flat spots, and looseness before it causes track chain damage. Replace it promptly if wear is advanced,...
What Is an Undercarriage Parts Glossary?
An undercarriage parts glossary is a clear dictionary of every major track system component, from track shoes and track links to rollers, idlers, sprockets, and tensioners. It helps buyers, mechanics,...
What Is Bobcat Carrier Roller 7013581?
Bobcat carrier roller 7013581 is a top roller used to support and guide the track on compatible compact excavators, helping reduce derailment risk, improve track alignment, and extend undercarriage life....
How Do Dual-Gauge Rail Crawlers Work?
Dual-gauge rail crawlers combine a crawler undercarriage with rail-ready travel systems so one machine can work safely on track and off track. In railway construction, this usually means a hi-rail...
How can you optimize heavy excavator track rebushing?
Re-bushing heavy-duty crawler excavator tracks means pressing out worn bushings and pins, installing new sleeves, and reassembling the chain to restore pitch accuracy, seal integrity, and load distribution. Done with...
How Should You Choose CAT 277-8576 Carrier Roller?
If you are deciding between OEM and aftermarket for a CAT 277-8576 carrier roller, the best choice depends on uptime, budget, and working conditions. For many fleets, a high-quality aftermarket...