Excavators are essential machines in construction, mining, and demolition projects. Understanding the key components and sourcing the right parts can save time and reduce costly downtime.
In this guide, we’ll explore the key components that make up 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 core 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: Where the operator sits and controls the machine.
Undercarriage: Includes the tracks, track rollers, and idlers.
Engine: Powers the entire machine.
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.
Environmentally friendly by recycling old machinery.
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
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 takeuchi excavator parts 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.
Finding the Right Parts Excavator Dealers and Sellers
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.
Ask for warranties or return policies on used parts.
Visual checks can reveal wear or defects.
OEM (original equipment manufacturer) parts guarantee fit, while aftermarket may be cheaper.
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.
This reduces friction and prolongs bushing life.
Change filters and fluids according to schedule.
Store equipment properly when not in use.
Train operators to use machines efficiently.
Conclusion
No matter the brand—Hitachi, Takeuchi, Volvo, or Caterpillar—keeping parts in top shape is key.
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.