320 Hydraulic Excavator

At a Glance

Net Power - ISO 9249

172 HP

Operating Weight

50265 lb

Maximum Digging Depth

22.1 ft

Engine Model

Cat C4.4e TTA

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Overview

The 320 raises the bar for efficiency and fuel economy in this size class. With the industry’s highest level of standard factory technology, a new cab focused on operator comfort, plus lower fuel and maintenance costs, the 320 will set a new pace for productivity and profit in your operation.

Engine

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Net Power - ISO 9249	172HP
Engine Model	Cat C4.4e TTA
Engine Power - ISO 14396	173HP
Bore	4in
Stroke	5in
Displacement	269in³

Weights

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Operating Weight

50265lb

Working Ranges & Forces

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Maximum Digging Depth	22.1ft
Boom	Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6")
Bucket	1.19 m ³ (1.56 yd³)
Maximum Reach at Ground Level	32.4ft
Maximum Cutting Height	30.8ft
Maximum Loading Height	21.4ft
Minimum Loading Height	7.1ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	21.5ft
Maximum Vertical Wall Digging Depth	17ft
Bucket Digging Force - ISO	38811lbf
Stick Digging Force - ISO	23911lbf

Hydraulic System

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Main System - Maximum Flow	429 l/min (113 gal/min)
Maximum Pressure - Equipment	5075psi
Maximum Pressure - Travel	4974psi
Maximum Pressure - Swing	3988psi

Swing Mechanism

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Maximum Swing Torque

60300ft·lbf

Service Refill Capacities

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Fuel Tank Capacity	86.6gal (US)
Cooling System	6.6gal (US)
Engine Oil	4gal (US)
Swing Drive - Each	3.2gal (US)
Final Drive - Each	1.3gal (US)
Hydraulic System - Including Tank	61.8gal (US)
Hydraulic Tank	30.4gal (US)
DEF Tank	10.3gal (US)

Dimensions

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Boom	Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6")
Bucket	1.19 m ³ (1.56 yd³)
Shipping Height - Top of Cab	9.8ft
Handrail Height	9.8ft
Shipping Length	31ft
Tail Swing Radius	9.3ft
Counterweight Clearance	3.4ft
Ground Clearance	1.6ft
Track Length	14.7ft
Length to Center of Rollers	12ft
Track Gauge	7.9ft
Transport Width	9.8ft

Standard Equipment:

Note

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Standard and optional equipment may vary. Consult your Cat dealer for details.

Cab

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ROPS, sound suppression
Mechanically adjustable seat
High-resolution 203 mm (8 in) LCD touchscreen monitor

Cat Technology

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Cat Product Link
Cat GRADE with 2D

Cat Technology

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Cat GRADE with Assist
Cat PAYLOAD
2D E-Fence
Lift Assist
Auto Dig Boost
Remote troubleshoot

Engine

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Three selectable power modes
Auto engine speed control
52°C (126°F) ambient cooling capacity
-32°C (-25°F) cold start capability
Reversing electric cooling fans
Biodiesel capability up to B20

Hydraulic System

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Boom and stick regeneration circuits
Slide joysticks
Auto hydraulic warm up
Auto two-speed travel
Boom and stick drift reduction valve
Advanced tool control - Europe only

Boom And Sticks

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5.7 m (18'8") reach boom, 2.9 m (9'6") stick

Undercarriage And Structures

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Tie-down points on base frame

Electrical System

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Two 1,000 CCA maintenance-free batteries
Programmable time-delay LED working lights
LED chassis light, left-hand/right-hand boom lights, cab lights

Service And Maintenance

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Sampling ports for Scheduled Oil Sampling (S·O·S)
Ground-level and platform-level engine oil dipsticks

Safety And Security

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Rear and right-hand-sideview cameras
Signaling/warning horn
Right-hand mirror
Ground-level engine shutoff switch
Right-hand handrail and hand hold
Signaling/warning horn

Optional Equipment:

Note

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Standard and optional equipment may vary. Consult your Cat dealer for details.

Cab

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Air-adjustable seat with heat (Deluxe only)
High-resolution 254 mm (10 in) LCD touchscreen monitor
Cat Stick Steer

Cat Technology

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Cat GRADE with 3D
Cat GRADE with Advanced 2D (not available on SLR)
Cat GRADE with 3D (not available on SLR)

Safety And Security

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Cat Command remote control
Right-hand-side camera
360° visibility
Inspection Lighting
Cat Detect People Detection

Engine

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52°C (125°F) high-ambient cooling capacity

Hydraulic System

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Boom and stick lowering check valves
Hammer return filter circuit
Combined flow/high-pressure auxiliary circuit
Medium-pressure circuit
Quick coupler circuit for Cat Pin Grabber
Auto Heavy Lift

Boom And Sticks

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8.85 m (29'0") SLR boom, 6.28 m (20'7") SLR stick

Undercarriage And Structures

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600 mm (24") triple grouser shoes
700 mm (28") triple grouser shoes
790 mm (31") triple grouser shoes
900 mm (35") triple grouser shoes
4200 kg (9,300 lb) counterweight for HD boom and stick

Electrical System

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Premium surround lighting package

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320 Hydraulic Excavator