Whether you're building roads, digging foundations, or handling heavy materials, excavators play a critical role. But like any heavy-duty equipment, these machines need regular maintenance and replacement parts to function properly.
In this guide, we’ll explore the major parts of an excavator, highlight popular brands like Hitachi, Takeuchi, Volvo, and Caterpillar (Cat), and explain how to find the best excavator for parts.
What Are the Parts of an Excavator?
Excavators have multiple systems that work together for performance and efficiency. Here are the primary parts of an excavator:
Boom: Responsible for reaching and lifting, the boom is a vital hydraulic arm.
Stick (or Dipper Arm): Controls the distance between the machine and the bucket.
Bucket: Comes in different sizes for various tasks.
Cab: Equipped with joysticks, screens, and safety features.
Undercarriage: Provides mobility on rugged terrain.
Engine: Powers the entire machine.
Hydraulic System: Drives the boom, stick, bucket, and other attachments.
Swing Drive: Important for maneuvering on tight sites.
Counterweight: Ensures safety and stability when lifting heavy loads.
Each of these components can wear out or become damaged with time, requiring replacement. That’s when contractors look for excavator for parts options to keep their machines running.
Benefits of Purchasing Excavators for Parts
When a machine is beyond repair or retired from active use, it can still be valuable as a source of parts.
Benefits of using excavators for parts:
Save money by using salvaged components.
Promotes sustainability in the construction industry.
Ideal for discontinued or rare models.
Useful when operating multiple machines of the same brand.
Rather than buying new, sourcing used parts from similar machines can extend equipment life.
Popular Excavator Brands and Their Parts
Hitachi Excavator Parts
Globally recognized, Hitachi parts are in high demand.
Common Hitachi excavator parts include:
Hydraulic pumps and valves
Track chains and rollers
Final drives
Swing motors
Boom and stick cylinders
If you're running a Hitachi machine, make sure to source genuine parts or compatible aftermarket options.
Takeuchi Excavator Parts
Takeuchi specializes in compact excavators and mini diggers.
Popular Takeuchi excavator parts:
Rubber tracks
Drive sprockets
Air filters
Control valves
Swing bearings
Takeuchi machines are popular on urban job sites, so parts need to be compact and precise.
Volvo Excavator Parts
Volvo excavators are renowned for comfort, fuel efficiency, and durability.
Typical Volvo excavator parts:
Engine components
Fuel systems
Cab interiors and operator controls
Hydraulic oil filters
Attachments and buckets
Whether you're using a wheeled or tracked Volvo excavator, matching parts is key to performance.
CAT Excavator Parts / Caterpillar Excavator Parts
Caterpillar, or CAT, is a leader in heavy machinery worldwide.
High-demand Cat excavator parts include:
Undercarriage assemblies
Swing gearboxes
Turbochargers
Pins and bushings
Electrical components
Their global presence makes it easy to find new or used CAT excavators for parts.
How to Source Quality Excavators Parts
Buying excavator parts—new or used—requires attention to detail.
Tips for buying parts excavator owners need:
Ensure parts are compatible with your exact excavator model.
Trusted sellers offer guarantees.
Request photos or inspection reports.
Compare OEM vs. aftermarket options.
Build a relationship with reputable suppliers.
Common platforms to find excavator for parts:
Online marketplaces (eBay, MachineryTrader)
Construction equipment auctions
Heavy machinery salvage yards
Manufacturer-certified dealers
Local and international part resellers
Preventative Maintenance for Excavator Parts
Proper maintenance can delay or reduce the need for replacement parts.
Best practices:
Perform daily inspections for leaks or wear.
Lubricate all moving joints regularly.
Change filters and fluids according to schedule.
Store equipment properly when not in use.
Train operators to takeuchi excavator parts use machines efficiently.
Final Thoughts
Whether you're buying a full excavator for parts or just replacing a bucket or valve, sourcing the right component matters.
From swing motors to tracks and buckets, every part counts when maximizing uptime and productivity.
Invest in quality, plan ahead, and keep your excavators running like new.