Cat 308 Mini excavators tech specs
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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
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
Cat 308 expert review
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.
Efficient hydraulic systems with auto-idle and accessible service reduce downtimes.
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.
Cat 308 owner rating
2017-2025
Overall rating
Based on 0 ratings
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Customs paid
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