The Cat® 323 delivers power, speed, and high production performance. With more standard technology than previous models, plus reduced fuel and maintenance costs, the Cat 323 has all you need to take your business to the next level.
Net Power - ISO 9249 172 HP
Operating Weight 55100 lb
Maximum Digging Depth 22.1 ft
Net Power - ISO 9249 (DIN) 175 hp (metric)
Biodiesel Capability Up to B20¹
Bore 4in
Displacement 428in³
Emissions Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Engine Model Cat C7.1
Engine Power - ISO 14396 174HP
Engine Power - ISO 14396 (DIN) 176hp (metric)
Net Power - ISO 9249 172HP
Net Power - ISO 9249 (DIN) 175hp (metric)
Note (1) Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system, and alternator with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at the time
Note (2) ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO
Stroke 5in
Note Long undercarriage, Reach boom, R2.9 (9'6"), Reach stick, Heavy Duty (HD) 1.38 m³ (1.81 yd³) bucket, 790 mm (31") HD triple grouser track shoes and 5,400 kg (11,900 lb) counterweight.
Operating Weight 55100lb
Boom Reach 5.7 m (18'8")
Bucket HD 1.30 m³ (1.71 yd³)
Bucket Digging Force - ISO 34308lbf
Maximum Cutting Height 31ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 21.5ft
Maximum Digging Depth 22.1ft
Maximum Loading Height 21.3ft
Maximum Reach at Ground Level 32.4ft
Maximum Vertical Wall Digging Depth 18.8ft
Minimum Loading Height 7.1ft
Stick Reach 2.9 m (9'6")
Stick Digging Force - ISO 26094lbf
Main System - Maximum Flow 429 l/min (113 gal/min)
Maximum Pressure - Equipment 5075psi
Maximum Pressure - Swing 3988psi
Maximum Pressure - Travel 4974psi
Maximum Swing Torque 60300ft·lbf
Swing Speed 11.25r/min
Cooling System 6.6gal (US)
DEF Tank 10.8gal (US)
Engine Oil 6.6gal (US)
Final Drive - Each 1.3gal (US)
Fuel Tank Capacity 86.6gal (US)
Hydraulic System - Including Tank 61.8gal (US)
Hydraulic Tank 30.4gal (US)
Swing Drive - Each 1.6gal (US)
Boom Reach 5.7 m (18'8")
Bucket HD 1.30 m³ (1.71 yd³)
Counterweight Clearance 3.4ft
Ground Clearance 1.5ft
Handrail Height 9.7ft
Length to Center of Rollers 12ft
Shipping Height - Top of Cab 9.7ft
Shipping Length 31.3ft
Stick Reach 2.9 m (9'6")
Track Length 14.6ft
Transport Width 10.4ft
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).
Recyclability 98%
Standard and optional equipment may vary. Consult your Cat dealer for details.
Rollover protective structure (ROPS)
Air-adjustable seat with heat (Deluxe only)
Auto-adjustable seat with heat and air ventilation (Premium only)
High-resolution 254 mm (10 in) LCD touchscreen monitor
VisionLink®
Remote Flash
Remote Troubleshoot
Cat Grade 2D
Cat Assist
Cat Payload
Two 1,000 CCA maintenance-free batteries
Programmable time-delay LED working lights
LED chassis light, left-hand/right-hand boom lights, cab lights
Cat 7.1 single turbo diesel engine
Three selectable power modes
Automatic engine speed control
46°C (115°F) high-ambient cooling capacity (Europe only)
52°C (125°F) high-ambient cooling capacity
-18°C (0°F) cold start capability
Double element air filter with integrated precleaner
Reversing electric cooling fans
Boom and stick regeneration circuits
Auto hydraulic warm up
Auto two-speed travel
Boom and stick drift reduction valve
Auto dig boost
Auto heavy lift
2D E-Fence
Auto hammer stop
Rearview camera
Right-side-view camera
Lockable disconnect switch
Ground-level engine shutoff switch
Right-hand handrail and handhold
Signaling/warning horn
Sampling ports for Scheduled Oil Sampling (S·O·S℠)
Ground-level and platform-level engine oil dipsticks
Integrated vehicle health management system
Tie-down points on base frame
Standard and optional equipment may vary. Consult your Cat dealer for details.
5.7 m (18'8") Reach boom
5.7 m (18'8") HD Reach boom
2.7 m (8'10") stub + 3.3 m (10'10") fore, Variable Angle boom
8.85 m (29'0") Super Long Reach boom
2.5 m (8'2") Reach stick
2.9 m (9'6") Reach stick
2.5 m (8'2") HD Reach stick (Chile, Turkey only)
2.9 m (9'6") HD Reach stick (Chile, Turkey only)
3.9 m (12'10") Reach stick
2.9 m (9'6") HD Thumb Ready Reach stick
6.28 m (20'7") Super Long Reach stick
Cat Stick Steer
VisionLink Productivity
Cat Grade Connectivity
Cat Grade 2D with Attachment Ready Option (ARO)
Cat Grade 3D single GNSS
Cat Grade 3D dual GNSS
Cat Tilt Rotator (TRS) Integration
Operator Coaching
-32°C (-25°F) cold start capability
Boom and stick lowering check valves
SmartBoom™ (Europe only)
Hammer return filter circuit
Advanced tool control (two pump, one/two way high-pressure flow)
Hydraulic efficiency monitoring
Medium-pressure circuit
Quick coupler circuit for Cat Pin Grabber
Cat Command (remote control)
360° visibility
Inspection lighting
600 mm (24") single grouser shoes
600 mm (24") HD double grouser shoes
600 mm (24") HD triple grouser shoes
700 mm (28") HD triple grouser shoes
790 mm (31") HD triple grouser shoes
900 mm (35") HD triple grouser shoes
4200 kg (9,300 lb) counterweight
