Excavator Idler Replacement for CAT & Komatsu | Durable Undercarriage Parts

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Excavator Idler - Heavy Duty Replacement Idlers for CAT, Komatsu & Hitachi Undercarriages.

Excavator Idler - Heavy Duty Replacement Idlers for CAT, Komatsu & Hitachi Undercarriages.

Keep your excavator moving smoothly with our heavy duty excavator idlers built for durability and track alignment.
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Advantage of excavator idler

Maximum Durability with Forged Steel Construction

Heat treated RJ267 alloy steel (HRC 45-50) with thicker flanges to resist bending or deformation when under heavy loads

Double-Sealed Bearing System

Triple labyrinth seals and grease-purged chambers that prevent contaminants from entering and extend bearing life by 300+ operating hours

Precision Machined for Perfect Alignment

CNC turned surfaces (±0.05mm tolerances) offer smooth rotation and prevent uneven track wear

OEM-Compatible Fitment

Direct replacement for CAT, Komatsu, Hitachi, and Volvo excavators (20-50 tons) with no modifications required

excavator idler

1.Track Tension Maintenance Keeps track aligned Reduces premature wear

2. Rough Terrain Operations Absorbs ground impact Supports uneven ground surfaces

3. Wet Conditions Work Sealed bearings will prevent water damage Able to operate in muddy/marsh areas

4. Heavy-Duty Applications Maximum machine support weight For extreme durability mined conditions

FAQ

What does an excavator idler do?

It helps maintain proper track tension and keeps the track chain travelling evenly around the undercarriage as the machine travels.
Look for excessive wobble, worn down flange, or oil seeping from sealed idlers.
No - idlers can be machine specific and must be compatible in terms of the specific make, model, and size of the undercarriage of the excavator.
Sealed idlers require less maintenance, but when they wear out, you must replace the entire unit, whereas greasable types allow for lubrication but require servicing much more frequently.

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What Our Clients Are Saying

Tom
Tom

"My Cat 320 was throwing tracks every week. I changed the worn out idler with this heavy-duty one, and aligned it perfectly. Since then, and after 800 hours of work, I'm still running as true and smooth as day one."

Lisa
Lisa

"Our Komatsu PC400 was eating idlers every six months. The replacement that we put on has been through over a year of the most brutal rock conditions. No wobble, no leaks just dependable service."

David
David

"I changed the idler on my Kubota KX057 in 90 minutes by myself. The bolt holes lined up perfectly. Additionally, I noticed a major improvement with the stability of the track tension."

John
John

"-30°C used to freeze our idler bearings solid. This sealed idler doesn't have any issues with extreme cold and has survived two winters and is still rotating freely.

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Why Choose Us

Why Choose Us

We have been producing and selling unsurpassed excavator spare parts, bulldozer spare parts, motor graders spare parts, and heavy machine spare parts since 1998. We are located in Quanzhou—China's Construction Machinery Capital. Our factory is 35,000 sq. ft. , and our company is led by grass-roots and skilled manufacturing expertise. We are always continuing to improve and modernize our processes and equipment because we know that quality parts equals parts that keep your equipment moving!
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