Whether you're building roads, digging foundations, or handling heavy materials, excavators play a critical role. To keep them running smoothly, knowing the different parts of an excavator is essential.
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.
Excavator Parts Breakdown
Excavators have multiple systems that work together for performance and efficiency. Here are the main parts of an excavator:
Boom: The arm that extends from the machine’s body to the working area.
Stick (or Dipper Arm): Attached to the boom, it allows for digging and extending deeper into the ground.
Bucket: Used for digging, trenching, and lifting materials.
Cab: Where the operator sits and controls the machine.
Undercarriage: Includes the tracks, track rollers, and idlers.
Engine: Usually a diesel-powered unit that supports hydraulic and mechanical systems.
Hydraulic System: Requires regular maintenance to prevent leaks and breakdowns.
Swing Drive: Important for maneuvering on tight sites.
Counterweight: Balances the machine during operation.
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.
Why Buy an Excavator 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.
This method is especially popular in regions where new parts are expensive or unavailable.
Popular Excavator Brands and Their Parts
Hitachi Excavator Parts
Globally recognized, Hitachi parts parts excavator 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
Plenty of salvage yards and resellers offer used Hitachi excavators for parts.
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
Known for innovation, Takeuchi replacement parts support longer operating life.
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
Volvo’s reputation means parts can sometimes be more expensive, but many quality aftermarket suppliers are available.
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
If you’re using Caterpillar machines, ensure you stick with trusted vendors to avoid copyright parts.
Where to Buy Excavator Parts Safely
Whether you’re buying online or locally, follow these tips to get reliable excavator parts.
Tips for buying parts excavator owners need:
Always verify the model and serial number before buying.
Trusted sellers offer guarantees.
Visual checks can reveal wear or defects.
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
Keep Your Excavator Running Longer
Avoid unnecessary wear with good operating practices.
Best practices:
Check hoses, tracks, and cylinders every shift.
Lubricate all moving joints regularly.
Change filters and fluids according to schedule.
Store equipment properly when not in use.
Train operators to 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.
Use this guide to understand the parts of excavator systems, explore trusted brands, and learn how to find reliable suppliers.
Invest in quality, plan ahead, and keep your excavators running like new.