Comparison · Excavator

Caterpillar 313 vs Caterpillar 323

The Caterpillar 323 is about 85% heavier than the Caterpillar 313 (25,000 vs 13,500 kg), which usually means more stability and lifting capacity but higher transport weight.

The Caterpillar 323 has about 72% more engine power (129 kW (173 hp) vs 75 kW (101 hp)).

	Caterpillar Caterpillar 313	Caterpillar Caterpillar 323
Operating weight	13,500 kg (29,800 lb)	25,000 kg (55,100 lb)
Engine power	75 kW (101 hp)	129 kW (173 hp)
Net power	≈75 kW (100 hp)	—
Max. digging depth	≈6.0 m (19 ft 8 in)	6.73 m (22 ft 1 in), R2.9 m stick
Engine	Cat C3.6	—
Net power (ISO 9249)	—	128.5 kW (172 hp) Tier 4 Final / Stage V; 117 kW (157 hp) Tier 3
Max. reach at ground level	—	9.87 m (32 ft 4 in)
Bucket digging force (ISO)	—	140 kN (31,505 lbf); 152 kN (34,205 lbf) with Auto Dig Boost
Bucket capacity	—	up to ≈1.30–1.38 m³ (1.70–1.80 yd³) HD
Engine model	—	Cat C7.1, six cylinders
Displacement	—	7.01 L (428 in³)
Gross power (ISO 14396)	—	129.4 kW (174 hp) Tier 4 Final / Stage V
Emissions	—	US EPA Tier 4 Final / EU Stage V; Tier 3-equivalent version for less regulated markets
Renewable fuels	—	Biodiesel blends and 100% HVO renewable diesel
Main system max. flow	—	429 L/min (113 gal/min), 2 × 215 L/min
Max. pressure – equipment	—	35,000 kPa (5,075 psi); 38,000 kPa (5,510 psi) Heavy Lift / Auto Dig Boost
Max. pressure – travel / swing	—	34,300 kPa (4,974 psi) / 27,500 kPa (3,998 psi)
Stick digging force (ISO)	—	107 kN (24,050 lbf); 116 kN with boost, R2.9 m stick
Swing speed	—	11.3 rpm
Max. swing torque	—	82 kN·m (60,300 lbf·ft)
Max. travel speed	—	5.7 km/h (3.5 mph)
Max. drawbar pull	—	204 kN (45,861 lbf)
Max. cutting height	—	9.45 m (31 ft 1 in)
Max. loading height	—	6.48 m (21 ft 3 in)
Max. vertical wall digging depth	—	5.62 m (18 ft 5 in)
Depth for 2.44 m (8 ft) level bottom	—	6.56 m (21 ft 6 in)
Counterweight	—	5,400 kg (11,900 lb)
Tail swing radius	—	2.83 m (9 ft 3 in)
Cab height	—	2.96 m (9 ft 9 in)
Track shoes	—	600 mm (24 in) standard; 700 or 790 mm (28 or 31 in) optional
Fuel tank	—	345 L (86.6 US gal)
Hydraulic system / tank	—	234 L / 115 L (61.8 / 30.4 US gal)
Engine oil	—	25 L (6.6 US gal)
Sound in cab (ISO 6396)	—	70 dB(A)
Strengths	+ Factory grade technology in a small excavator + Easy to transport + Low fuel consumption	+ Heavier counterweight (5.4 t) and frame give more lift capacity and stability than the 320 + Six-cylinder C7.1 engine with strong low-speed torque + Same factory Cat Grade, Payload, E-fence and Lift Assist technologies as the 320 + Still transportable like a 20-tonne machine in many regions + Excellent resale and dealer support
Watch-outs	− Less lifting capacity than 20-tonne machines	− Same hydraulic flow (429 L/min) as the 320, so cycle-time gains come mainly from stability and bucket size − Higher price and fuel burn than the 320 − Heavier: closer to transport limits with a large bucket and wide shoes − Tier 4 Final / Stage V aftertreatment needs good DEF and fuel management
	Full 313 review	Full 323 review

Specifications are typical figures for standard configurations and may be measured differently by each manufacturer (for example net vs gross power). Always confirm with the manufacturer or dealer. Build another comparison.