Top medium excavators

Overview

The 2019-2025 Cat 323 is a 22.6-ton medium excavator powered by a 144 hp Cat C7.1 engine. Designed for high-production applications, it offers robust performance in tasks such as earthmoving, trenching, and material handling. With an operating weight of 22,600 kg and a 1.2 m³ severe-duty bucket, the 323 delivers efficient digging and loading capabilities.

What's new

The 2019-2025 model introduced several enhancements aimed at improving performance and operator experience. The excavator features a high-efficiency hydraulic system with tandem pumps delivering a maximum flow of 429 L/min, providing improved digging and lifting capabilities.

The machine's fuel system includes a two-stage filtration system with an anti-rust fuel tank, ensuring reliable performance and reduced maintenance needs.

Additionally, the 323 comes equipped with a heavy-duty, eight-roller undercarriage and reinforced structures, enhancing durability and stability during operation.

Efficiency and performance

In day-to-day operations, the Cat 323 demonstrates robust performance. Its digging depth reaches up to 6.3 meters, and the maximum reach at ground level is 9.47 meters, making it suitable for a variety of tasks.

The machine's fuel efficiency stands out, with operators reporting substantial savings over time. However, attention should be given to the cab comfort, as it may not match the standards of newer models.

Routine maintenance is facilitated by the machine's design, featuring easy access to service points, which helps minimize downtime and maintain consistent performance.

In-cabin and interior

The operator station of the 323 is designed with functionality in mind. The cab includes a high-resolution 203 mm (8") LCD touchscreen monitor, mechanically adjustable seat with headrest, and automatic bi-level air conditioner.

While the cab provides essential features for operation, it may lack some of the advanced comfort and noise reduction technologies found in newer models.

Safety features

Safety is a key consideration in the design of the 323. The machine is equipped with a fully enclosed ROPS and FOPS cab, protecting operators from rollovers and falling objects. The cab's design enhances visibility, reducing blind spots and contributing to safer operation.

The machine's maintenance-friendly design minimizes the risk of accidents during routine checks, and the inclusion of a backup alarm and interlock system further enhances operator safety.

In comparison

Compared to previous models, the 2019-2025 323 offers improved hydraulic performance and operator functionality. When compared to competitors like the Komatsu PC210, some users have noted that the 323's fuel efficiency and durability provide a competitive edge in terms of performance and operator satisfaction.

Verdict

The 2019-2025 Cat 323 Medium Excavator earns a solid 5-star rating for its reliability, fuel efficiency, and operator-focused design. While attention to cab comfort and advanced technology features is necessary, the machine's overall performance and cost-effectiveness make it a valuable asset for various applications.

Overview

The Cat 320 is a 21.2 t (46,700 lb) next-gen excavator powered by a 110.5 kW (150 hp) Cat C7.1 engine. It delivers up to 6.72 m (22 ft) digging depth and 1.4 m³ (1.8 yd³) bucket capacity.

Performance & Efficiency

Main hydraulics at 429 L/min and up to 5,500 psi pressure deliver high dig force and control. Fuel use is cut by ~25%, and maintenance cost drops up to ~15% versus older models.

In Comparison

Compared to the PC300, you gain full tech and more power for not much more weight. Against the 323, it’s lighter, easier to move, and more cost-effective.

Verdict

The Cat 320 hits the utility-productivity-tech sweet spot. Perfect for high-production digging and grading. Skip it if your work is ultra-compact or you want the simplest rig.

Overview

The PC300–8M0 weighs 31,100–32,000 kg, powered by a 194 kW (260 hp) SAA6D114E-3 Tier 3 engine. Bucket ranges from 0.52 to 1.8 m³, dig depth ~6.54 m, horizontal reach ~10.25 m.

Performance & Efficiency

HydrauMind and economy mode dial in fuel savings; KOMTRAX keeps tabs on uptime. Comfortable cab and auto-idle reduce operator fatigue.

In Comparison

Stronger and more capable than smaller mid-size excavators; easier on cost and mobility compared to full-size rigs.

Verdict

Smart, strong, and suited for high-output mid-size jobs. Not for ultra-tight access work or simplicity-only operations.

Overview

The 350 P-Tier is a mid-size excavator weighing ~36 734 kg (80,985 lb), delivering 202 kW (271 hp), and capable of digging up to 8.18 m deep. It offers enhanced visibility options and integrated technologies.

Performance & Efficiency

Powerwise engine-hydraulic control and auto-idle improve fuel economy. Optional cameras and lighting cut operator fatigue and boost safety.

In Comparison

Oversized compared to smaller mid-excavators for more reach and control; more agile and efficient than full-sized models.

Verdict

Great for high-production mid-size work with modern controls. Avoid if your work is ultra-compact or simplicity is the mission.

Overview

The Cat 336 is a 36.6 t (80,600 lb) Tier 4 Final excavator powered by a 223 kW (300 hp) Cat C7.1 TTA engine. It features a 2.27 m³ bucket, 8.2 m (26.9 ft) digging depth, and up to 11.73 m (38.5 ft) reach.

Performance & Efficiency

With 560 L/min hydraulic flow and high dig force (~210 kN), it balances power with precision. Fuel consumption drops up to 15%, maintenance costs fall due to extended service intervals.

In Comparison

Compared to the 336 GC, you get more hydraulic power and tech at a modest weight bump. Against the 340, it's easier to transport and still accurate.

Verdict

The Cat 336 delivers utility, accuracy, and productivity in one package. Ideal for large excavation and grading tasks. Skip it for ultra-tight access sites or if you need stripped-down simplicity.