Second Hand Diggers – CAT VS Komatsu

Komatsu second hand diggers

Do you require construction machinery for your fleet, but you’re not sure which brand of second hand diggers would be best? When it comes to buying used plant equipment, there are many brands to choose from including JCB, Hitachi and Volvo CE to name a few. We are here to help with our useful guide, containing a comparison of popular CAT and Komatsu diggers for sale.


Caterpillar logo

Caterpillar, also known as CAT, is a popular distributor of plant equipment. They specialise in supplying the market with:

  • Excavators
  • Backhoe loaders
  • Skidsteers 

Caterpillar was established in 1925 when the likes of the Holt Manufacturing Company and C. L Best Tractor Co. joined forces. When they first established, Caterpillar’s main focus was on agricultural and farming machinery. The first few machines manufactured were tractors, which were used within the farming and agriculture sector. 

Caterpillar is consistently working on discovering ways to assist their customers build a better world. Building on their core competencies of operational excellence, increasing safety, quality and competitive cost are just some of the main aims for the company.


Komatsu Logo

Komatsu was originally founded in 1921. Komatsu’s philosophy is that ‘Innovation is at the core of our DNA’. This statement is very clearly represented with the large range of plant equipment available to the global market. 

Komatsu are one of the market leaders in the construction industry, and it’s true that you are never far from a piece of Komatsu machinery, whether that be on the road side or based on a construction site. Komatsu also produces an array of high quality mining equipment and forestry machinery. They are a well respected brand when it comes to machine warranty, after sales service and customer service.



Caterpillar 313F GC Excavator

The CAT 313F GC is one of many in the excavator range. This particular model can be compared closely to the rivalling Komatsu PC138 US-10 Excavator. 

The CAT excavator is a powerful, cost effective machine, with perfect light to medium digging capability. 


The cab of the excavator could arguably be the most important factor to consider. Who would want to operate in a machine that’s stuffy, cramped and not user friendly?

The cab of the CAT 313F GC is spacious and comfortable. With easy access to the controls, any operator can enjoy the ease of digging in comfort. The large LCD monitor is also programmed in 42 different languages, which will benefit any customers buying second hand diggers from other countries.


Like all excavators, the CAT excavator provides operators with quick and easy access to the hydraulic activation lever, locking all hydraulic functions in case of an emergency.

Due to the shape of the cab, visibility is very clear. The operator will have a 360 degree view around the digger to ensure safety on a construction site.

Another additional feature found on the CAT 313F GC is the Falling Objects Guard System (FOGS). As the name suggests the operator has additional coverage from any falling objects.

When buying second hand diggers it is important to consider the following:

  • Operating Weight
  • Engine Power
  • Bucket Capacity

The CAT 313F GC has an operating weight of 13.2 tonnes, an engine power of 70.0 HP, and a bucket capacity of 0.53m³. Let’s take a look, and compare this to the Komatsu PC138 US-10.


Komatsu PC138 US-10 Excavator

The Komatsu PC138 US-10 benefits from an engine power of 97.3 HP, a bucket capacity of 0.72m³ and an operating weight of 13.7 tonnes. Overall, the Komatsu digger is a lot more powerful and robust compared to the CAT digger.


Like all Komatsu machinery, the cab offers first-class operator comfort. From an adjustable heated air suspension seat to low vibration levels, why wouldn’t you buy a Komatsu?

The cab is of a similar size and shape to the CAT excavator, with a 360 view and a rear view camera.


The reliable Komatsu PC138 US-10 is equipped to handle even the toughest tasks. The operator will have peace of mind knowing that the digger is equipped with safe access, and an easy exit in the case of an emergency. When it comes to servicing the plant equipment, all major components are accessible to reduce time during maintenance.

If you’re looking to buy a Komatsu PC138US-10, the machine is hydraulically operated ensuring maximum productivity and control. It also has an ultra-short tail swing, which provides effective use in small or confined areas with limited access for plant equipment.


With an extensive range of Komatsu PC138 US-10 excavators, fitted with either steel tracked or roadliner pads, we also stock second hand diggers in a variety of weights and sizes including:

Buying second hand diggers should be a simple task, and here at BuyADigger we always put the customer first. When you buy komatsu diggers for sale and other plant equipment, you will benefit from a machine with low hours that is in excellent condition. All BuyADigger machines come with a warranty on all major components and a manufacturer’s service history.

Do you want to buy a Komatsu PC138 US-10? Simpy select the fleet number of the machine you’re interested in, and contact the sales team today via WhatsApp or email.