Frame Structure Spare Parts
Structural fatigue shows up first where loads concentrate: hairline cracks along a boom weld, an oval bore in a worn stick, a counterweight mount that no longer sits flush. This category covers the load-bearing skeleton of excavators, loaders, and dozers, including booms, arms and sticks, chassis members, counterweights, structural pins, and the brackets and weldments that hold everything in alignment. Machines that run hard in trenching, demolition, or rock digging punish these components, and over thousands of hours pins seize, bushings elongate, and mounting bosses deform.
3GEN supplies 100% OEM structural parts across 40-plus supported brands. When casting numbers have worn off, our parts specialists identify the correct piece from a machine serial number, an OEM reference, or a technical drawing, cross-checking a database of 564,000-plus part numbers to confirm pin diameter and bracket geometry before you commit. With 3,300-plus parts in stock, replacements move quickly: free worldwide shipping to any country, most orders prepared in 1–2 days and delivered in 5–7 days, full tracking with duties and taxes already paid.
Frequently Asked Questions
What Frame And Structural Parts Can You Supply For An Excavator?
We stock booms, arms and sticks, counterweights, structural pins and mounting brackets for excavators, loaders and dozers. With 3,300+ parts in stock and cross-references across 40+ brands, our specialists match structural components to your machine using the serial number, an OEM reference or a technical drawing.
How Do I Confirm A Replacement Boom Or Stick Will Fit My Machine?
Structural parts vary by machine variant, so fitment depends on exact model, serial number and pin-bore dimensions. Send us the serial number plus the OEM reference or a drawing, and a parts specialist confirms the match. We supply 100% OEM parts; note we are an independent supplier, not an authorized dealer.
Why Do Boom And Stick Pins Wear, And Should I Replace Bushings Too?
Pin joints wear from cyclic load, grease starvation and contamination, showing as play, ovaled bores or knocking under motion. Replace worn pins and their bushings as a set to restore correct clearance and avoid rapid re-wear. We supply matched structural pins, bushings and brackets, and cross-reference sizes from your part numbers.