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Caterpillar E120B Front Idler Assembly for Excavator HRC52-58 Hardness

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Caterpillar E120B Front Idler Assembly for Excavator HRC52-58 Hardness

Brand Name : YT

Model Number : E120B

Certification : ISO9001

Place of Origin : China(Mainland)

MOQ : 1PCS

Price : Negotiable

Payment Terms : L/C,T/T

Supply Ability : 10000 PCS/month

Delivery Time : 7-30 days

Packaging Details : Standard Export Packaging

Model NO. : E120B

Application : Excavator

Condition : New

Material : 50Mn, 35MnB

Surface Hardness : HRC52-58

Color : Black/Yellow

Process : Forging /Casting

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Caterpillar E120 Construction Machinery Bulldozer OEM Undercarriage Spare Parts Heat Treatment Front Idler Assembly

1. What is a Idler?

The CHT idler is precision-engineered for endurance and safety: at its core, a keyed joint connects the idler to the axle, expanding the bearing surface and enhancing torque transmission—this design not only boosts reliability but also aligns the idler’s lifespan with other undercarriage components to eliminate premature wear mismatches, while the axle’s rotation within fixed bearings drastically reduces friction and wear to further extend the track system’s durability. Manufactured via either alkali phenolic resin sand casting or sodium silicate-bonded sand casting (processes selected for robust, dimensionally stable components), it undergoes specialized heat treatment post-casting to achieve a minimum surface hardness of HRC48-58 and a 4-6mm hardened layer (HRC45), delivering exceptional impact resistance and wear resistance even in harsh mining or construction environments; precision is then finalized on a CK5110 large-scale CNC vertical lathe, ensuring impeccable dimensional accuracy and superior surface finishes that guarantee reliable stability and a consistently long service life. Ultimately, the extended track system lifespan reduces replacement cycles, directly lowering workers’ exposure to safety hazards during maintenance and proving durability and safety go hand in hand.

2. Idler Characteristic

2.1 Tech-Driven Durability: Built to Outlast

50% bearing pressure reduction: Slashes bearing load to extend component life by 2x+—eliminating frequent replacements.
Splined idler-shaft connection: Locks in unbeatable reliability while aligning the idler’s lifespan with other critical undercarriage parts.
Heavy-duty rock guard: Acts as a rugged barrier against dirt, rubble, and debris, shielding vulnerable components from costly damage.

2.2 Efficiency-Focused Design: Minimize Downtime, Maximize Output

Detachable bushing-equipped bearing blocks: Remove and service without disassembling the track—cuts maintenance time by up to 40%.
Dedicated lubrication injectors: Target high-wear surfaces with precise lubricant delivery, preventing friction-related failures.
Expanded bearing surface + optimized oil flow: Boosts track stability and responsiveness, even in rough mining conditions.

2.3 Cost-Smart Engineering: Lower TCO, Higher Returns

Rotating shaft + stationary bushings: Reduces contact stress and wear, slashing unplanned stoppages that eat into profits.
Prolonged track system life: Lowers overall mining operational costs by minimizing downtime and replacement frequency.
50% less bearing stress: Directly translates to fewer bearing failures, reducing both parts costs and labor for repairs.

3. Design/Structure/Main Dimensions of Installation

4. Production Processes

5. Hot Sale Products

6. Our Advantages

World-class quality
Factory sale directly with reasonable price
35 years' experience in Excavator & Bulldozer spare parts manufacturing
Fast delivery within 30 days after contract established
Professional sales team, quality inspection and report, maritime logistics guidance
After-sale services: video technical support, 24h online support

Are you still troubled by lacking of quality excavator idler? YinTai Parts is one of the professional manufacturers and suppliers of excavator idler in China, who has high quality products for sale. With over 30 years experience and wide expertise, we can assure you the high quality and good performance of our products.

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