D4D Bulldozer Front Idler 50mn/40mn2 Forged Undercarriage Part

The keyed joint connecting the idler to the axle provides an expanded bearing surface and enhanced torque transmission. This design not only boosts reliability but also synchronizes the idler's service life with other undercarriage components. As the axle rotates inside fixed bearings, friction and wear are significantly reduced, further extending durability.

An extended service life of the track system translates to fewer replacement cycles, directly decreasing workers' exposure to safety hazards during maintenance.

The idler is crafted using either the alkali phenolic resin sand or sodium silicate-bonded sand casting process. After undergoing heat treatment, it achieves a minimum surface hardness of HRC48-58 with a hardened depth of 4-6mm (HRC45) — enabling it to deliver exceptional impact resistance and wear resistance even under harsh working conditions.

Further refined on a CK5110 large-scale precision CNC vertical lathe, the idler boasts precise dimensional accuracy and superior surface finish quality. This comprehensive manufacturing approach ensures that the finished CHT idler delivers reliable stability and a guaranteed service life.

• 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.

• 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.

• 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.