Specification sheetIssued 4 November 2026
Cat · excavator
Cat 323
Cat 323 current (next) generation, Tier 3-equivalent build 07H (C7.1, Brazil MAR-1 = EPA Tier 3 / EU Stage IIIA) - the build Cat lists with an Africa/Middle East bucket table; long undercarriage, 5.7 m HD Reach boom, R2.9B1 stick, 1.30 m³ HD bucket, 600 mm shoes, 4.2 t counterweight.
UAEUSAGlobal
- digging depth
- 6.73 m
- power
- 117 kW (157 hp)
- Operating weight
- 22,900 kg
- Bucket capacity
- 1.3 m³
- Overall height (to top of cab)
- 2.96 m
- Overall length
- 9.53 m
- Upperframe width
- 2.78 m
- Tail swing radius
- 2.83 m
- Ground clearance, counterweight
- 1.05 m
- Ground clearance (minimum)
- 0.47 m
- Track length
- 4.45 m
- Track length on ground
- 3.65 m
- Track gauge
- 2.38 m
- Overall width
- 2.98 m
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Dimensions
- Overall height (to top of boom)
- 3.16 m
- Handrail height
- 2.95 m
- Top of OPG height (with optional operator protective guard)
- 3.1 m
- Overall width (790 mm shoes)
- 3.17 m
- Shoe width (standard HD triple grouser)
- 0.6 m
- Shoe width (optional) (optional HD triple grouser)
- 0.79 m
Performance
- 1Max digging depth
- 6.73 m
- 2Max reach at ground level
- 9.87 m
- 3Max digging height
- 9.45 m
- 4Max dumping height
- 6.48 m
- 5Min loading height
- 2.16 m
- 6Max depth cut for 2,440 mm level bottom
- 6.56 m
- 7Max vertical wall digging depth
- 5.62 m
- Bucket capacity (HD bucket)
- 1.3 m³
- Bucket digging force
- 140 kN
- Bucket digging force (Auto Dig Boost) (ISO)
- 152 kN
- Arm digging force
- 107 kN
- Arm digging force (Auto Dig Boost) (stick digging force, ISO)
- 116 kN
- Swing speed (CE-marked machines may be set lower)
- 11.25 rpm
- Max swing torque
- 82 kN·m
- Travel speed (high) (maximum travel speed)
- 5.7 km/h
- Max drawbar pull
- 204 kN
- Gradeability
- 35°/70%
Weight
- Operating weight
- 22,900 kg
- Operating weight (5.4 t counterweight)
- 24,300 kg
- Ground pressure (4.2 t counterweight, 600 mm shoes)
- 47.6 kPa
- Counterweight (standard; 5.4 t optional)
- 4,200 kg
Engine
- Engine model
- Cat C7.1
- Emissions
- Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA
- Net power (ISO 9249, at 1,800 rpm)
- 117 kW (157 hp)
- Net power (DIN) (ISO 9249 (DIN))
- 159 hp (metric)
- Gross power (ISO 14396)
- 118 kW (158 hp)
- Gross power (DIN) (ISO 14396 (DIN))
- 160 hp (metric)
- Bore
- 105 mm
- Stroke
- 135 mm
- Displacement
- 7 L
- Biodiesel capability
- Up to B20
Hydraulics
- Pump flow
- 429 L/min
- Max pressure (equipment, normal)
- 35 000 kPa
- Max pressure, equipment (heavy lift / Auto Dig Boost)
- 38 000 kPa
- Max pressure, travel
- 34 300 kPa
- Max pressure, swing
- 27 500 kPa
- Boom cylinder bore
- 120 mm
- Boom cylinder stroke
- 1,260 mm
- Stick cylinder bore
- 140 mm
- Stick cylinder stroke
- 1,504 mm
- Bucket cylinder bore
- 120 mm
- Bucket cylinder stroke
- 1,104 mm
Undercarriage
- Number of shoes (each side)
- 49
- Track rollers (each side)
- 8
- Carrier rollers (each side)
- 2
Service capacities
- Fuel tank
- 345 L
- Cooling system
- 25 L
- Engine oil
- 25 L
- Swing drive
- 12 L
- Final drive
- 5 L
- Hydraulic system, with tank
- 234 L
- Hydraulic tank
- 115 L
Sound
- External sound (ISO 6395:2008)
- 100 dB(A)
- Operator sound (inside cab) (ISO 6396:2008)
- 70 dB(A)
Service intervals
- Engine oil and filter
- 1,000 hours
- Fuel filters
- 1,000 hours
- Swing drive oil (First change at 500 h)
- 1,000 hours
- Final drive oil (Each side; first change at 500 h)
- 2,000 hours
- Hydraulic return filter
- 3,000 hours
- Hydraulic oil
- 6,000 hours
- Coolant
- 12,000 hours
- Boom and stick linkage grease (Daily for the first 50 h)
- 500 hours
- Bucket linkage grease (Daily for the first 50 h)
- 100 hours