Installing rolos de lagartas correctly ensures optimal performance and longevity for your heavy equipment undercarriage. This guide covers essential tools, estimated time, costs, and step-by-step procedures for track roller installation.
What Are Track Rollers?
Rolos de lagartas support the weight of excavators and bulldozers while allowing tracks to move smoothly over wheels. They endure high radial loads, impacts, and contaminants, distributing machine weight evenly to prevent frame distortion and track slippage.
Made from durable materials like 45# steel or 40Mn2, track rollers feature sealed bearings, shafts, and collars for minimal play and maximum contact. Proper installation reduces wear and downtime in demanding environments.
Signs You Need Replacement
Worn track rollers cause uneven track tension, increased fuel use, and vibrations. Look for flat spots, grease leaks, or excessive play—neglect can halve track chain life and raise operating costs by 18%.
Inspect regularly: bottom rollers manage tension and shocks, while top ones handle vertical loads. Early replacement prevents costly undercarriage damage.
Essential Tools Required
Gather these tools before starting track roller installation to ensure safety and efficiency.
- Hydraulic jacks (10-30 ton capacity) for lifting the machine.
- Torque wrench (300-600 Nm range) for precise bolt tightening.
- 1/2-inch drive ratchet with 17mm/19mm deep sockets and 6-inch extension.
- Pry bars, chisel bars, and grease gun (NLGI #2 high-temperature grease).
- Safety gear: gloves, glasses, steel-toe boots, and hydraulic lockout devices.
These tools handle cleaning, lifting, and securing during track roller installation.
Step-by-Step Installation Process
Follow these steps for safe track roller installation on most excavators.
- Park on flat ground, release track tension by loosening the grease valve one turn max.
- Lift machine with boom or jacks, support track frame, remove cover screws.
- Extract old roller: loosen bolts in cross pattern, lift out using pry bar.
- Clean mounting area, inspect frame for damage, apply copper powder anti-rust to new bolts.
- Install new roller: align axle/flange, hand-tighten bolts in star pattern, torque to 450-500 Nm.
- Reinstall cover, lower machine, re-tension track to spec sag, test spin for free rotation.
Always verify orientation and seals during track roller installation.
Time Estimates
A single track roller installation takes 1-2 hours for experienced technicians. Full undercarriage sets (6-9 rollers) require 8-12 hours, depending on machine size and access.
Factors like rust or contamination add 30-50% time; use pneumatic tools to speed up. Plan downtime accordingly for track roller installation projects.
Cost Breakdown
Actual costs for track roller installation vary widely based on your machine model, location, part quality, and labor rates. DIY saves on labor but requires tools and expertise—bulk purchases from reliable suppliers like XMGT reduce per-unit expenses significantly.
| Componente | Key Factors | Savings Tip |
| Rolos de calha | Machine size/brand; aftermarket vs OEM | Source directly from China manufacturers like XMGT for best value. |
| Tools & Equipment | Hydraulic jacks, torque wrenches; buy vs rent | Rent for one-time jobs to minimize upfront spend. |
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