Cat

Cat 308 Mini excavators

100K+ machines in details.

Cat 308 Mini excavators tech specs

Video[1]

Interior [1]

Exterior [3]

Attachments [1]

2017-2025

1 cu m Bucket capacity

50 kw Gross power

8,400 kg Operating weight

4,190 mm Max digging depth

5,380 mm Max dump height

7,250 mm Max digging reach

The Cat 308 CR combines Tier 4 Final power and precision hydraulics in a compact, zero-tail-swing shell. It’s agile on tight sites and smart on fuel and operator fatigue.

Zero-tail swing, ~1.585 m (62 in) width with counterweight

51.8 kW (69.5 hp) C3.3B engine, Tier 4 Final clean power

Load-sensing hydraulics with variable-displacement pump

Comfortable cab, stick-steer travel, and easy ground-level service

Show features

Makana rating

Owner rating

| 1

Market average

AED 346,000

Starting from

AED 310,000

Cat 308 Technical specifications

General

Bucket capacity

0.84 cu m

Operating weight

8,400 kg

Max speed forward

5.63 kph

Engine model

Cat C3.3B

Max digging depth

4190 mm

Max dump height

5380 mm

Max digging reach

7250 mm

Boom length

4.4 m

Bucket width

700 mm

Engine

Bore

9.4 cm

Displacement

3329.86 cu cm

Gross power

49.66 kw

Stroke

11.94 cm

Refill capacities

Engine oil cap

11.36 liter

Service refill capacities

Hydraulic fluid cap

82.13 liter

Cooling fluid cap

14 liter

Fuel cap

140 liter

Undercarriage

Track gauge

2.01 m

Drawbar Pull

62 kN

Track width

4.5 cm

Track length

2.85 m

Operational specifications

Swing speed

9.8 rpm

Arm crowding force

38 kN

Attachments

Bucket digging force

51 kN

Dimensions

Height - top of cab

2.68 m

Hydraulic system

Pump flow cap

160 lpm

Relief valve pressure

241.31 bar

Download datasheets

OEM product brochure

Cat 308 expert review

Reviewed by Kalid R. on September 3, 2025

Overview

The Cat 308 CR is a compact-radius mini excavator weighing ~8,387 kg (min) to ~9,380 kg (max with extras), powered by a 51.8 kW (69.5 hp) C3.3B Tier 4 Final engine. Dig depth tops out at 4.64 m with load-sensing hydraulics for smooth and efficient digging.

Pros Zero-tail swing and narrow width suit tight environments.
Efficient hydraulic systems with auto-idle and accessible service reduce downtimes.

Cons Weighs 8.4–9.4 t and needs firm setup and transport planning.
Modest horsepower may slow heavy or abrasive ground operations.

Performance & Efficiency

Load-sensing hydraulics, tractive force up to ~67.5 kN, and travel speeds ~5.1 km/h. Fuel savers like auto-idle and smart pump design cut operating expenses.

In Comparison

Compared to smaller 305 CR, it gains power, reach, and cab comfort with minimal bulk increase. Easier to move and more efficient than larger excavators.

Verdict

Smart mix of power, efficiency, and maneuverability. Ideal for tight, versatile site work. Skip it if you’re often in rock trenches or deep excavation zones requiring brute force.