Komatsu WA400 Pins & Bushings is a model-specific subcategory of KOMATSU WHEEL LOADER PINS AND BUSHINGS. Explore heavy-duty aftermarket pivot wear components for Komatsu WA400 wheel loader applications.

Designed for high-cycle bucket articulation, Z-bar linkage stress, and severe-duty load-and-carry production environments.

Komatsu WA400 Pins & Bushings

Komatsu WA400 Pins & Bushings

Komatsu WA400 wheel loaders are built for high-production material handling in quarry, mining support, construction, agriculture, and industrial environments. These machines operate under continuous load-and-carry cycles, heavy bucket rollback forces, and sustained articulation stress at loader arm and linkage pivot assemblies.

WQParts supplies heavy-duty aftermarket pins and bushings for Komatsu WA400 wheel loaders engineered for dimensional accuracy, proper hardness, and durability in extreme-duty applications. Maintaining controlled pivot clearance is critical to protecting structural bores and preserving bucket precision.

Primary Pivot Locations

  • Loader arm-to-frame connections
  • Z-bar or linkage assemblies
  • Bucket hinge and rollback joints
  • Center articulation joints
  • Quick coupler and attachment interfaces

Production-Level Wear Drivers

Wheel loaders experience unique stress patterns due to combined travel vibration and bucket force. Wear accelerates because of:

  • Continuous bucket cycling under heavy load
  • Load-and-carry vibration across rough terrain
  • Abrasive materials such as gravel, sand, and aggregate
  • Side loading during grading and stockpile work
  • Inconsistent lubrication in high-hour operations

Why Pivot Precision Matters

Small increases in pivot clearance create amplified movement at the bucket cutting edge. Excessive play reduces loading accuracy, increases impact stress, and accelerates bore deformation. High-quality aftermarket pins and bushings help distribute load evenly and protect high-value frame components.

Material & Manufacturing Standards

Pins must resist scoring, bending, and impact while maintaining core strength. Bushings must hold strict inside and outside diameter tolerances to properly manage clearance under sustained load. WQParts focuses on aftermarket components selected specifically for heavy-duty wheel loader applications.

Signs of Wear

  • Noticeable bucket or linkage play
  • Clunking at articulation or loader arm pivots
  • Uneven bushing wear
  • Reduced bucket control during reversal
  • Visible scoring or galling

Why Buy from WQParts?

  • Aftermarket components selected for severe-duty loader production
  • Precision-fit replacements designed to control pivot clearance
  • Competitive pricing for fleet and production operators
  • Model verification support
  • Fast fulfillment to reduce downtime

Browse available pins and bushings for Komatsu WA400 above. Contact WQParts for assistance verifying correct wear components for your wheel loader.