320D3

Medium Excavators 320D3

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Key Specs

Net Power - ISO 9249: 123 hp; 92 kW

Operating Weight: 46300 lb; 21000 kg

Maximum Digging Depth: 20.8 ft; 6300 mm

320D3
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Overview

LOWER YOUR COST PER TON

The Cat 320D3 Excavator balances productivity, efficiency and reliability to deliver you a reliable, highly efficient, low-cost-per-hour excavator for your work.

Benefits

Up to 10% Lower Fuel Consumption*

The latest Electro-Hydraulic (EH) system, Eco mode, and optional fuel consumption tracking in VisionLink® provide more control to optimize fuel consumption.

* Compared to the 320D3 model with prefix FKC. Fuel, CO2 emissions vary by application. Estimate fuel consumption improvements are based on engineering calculations and test data.

Robust Construction

Heavy duty front parts and structures plus two robust undercarriage options provide built-in durability and reliability on the jobsite. A proven 6-cylinder mechanical engine without an Electronic Control Module (ECM) enables simpler hydraulics.

Up to 15% Reduced Maintenance Costs**

Maximized uptime and extended service intervals, thanks to advanced hydraulic oil filter design and no pilot and case drain filters. A two-stage fuel filter and anti-rust fuel tank help protect the engine against low-quality fuel.

** Compared to 320D3 model prior to Annual Product Update 2021.

Features At A Glance

HIGH RELIABILITY

Optimized HD Boom and Stick for longer life in quarry application.
Two robust undercarriage choices providing optimized stability based on bucket selection.
Proven 6-cylinder mechanical engine with no electronic control module.
We designed the Stick and Boom structures using high-tensile steel fabricated into a large box section using internal baffles to absorb torsional stress. The single plate X-shaped, box-section car body provides excellent resistance to torsional bending, dissipating stress throughout the base of the machine.
Robust bottom guards protect machine components that might be damaged while swinging. A thicker bottom guard plate is used under the pump compartment to protect the suction hose.
Traverse the job site on the Grease Lubricated Track (GLT) undercarriage. Undercarriage rollers are rebuildable and sealed to prevent dirt and debris from causing internal wear. Grease lubricated links minimize internal bushing wear, reducing noise and increasing life up to 25%.
Hydraulic snubbers in the boom and stick cylinders dampen end-of-stroke impact prolonging the life of your machine.
Expect reliable performance from the double-filtered low-pressure fuel system and antirust fuel tank protects the engine from lower quality fuel.
Thick braiding protects the colored, numbered electrical wires. Non-abrasive connectors keep wiring harnesses in place to prevent failure.

LOWER FUEL CONSUMPTION

Up to 10% less fuel consumption than the previous 320D3 model in similar applications. Economy mode further reduces fuel consumption with no loss in lifting or digging forces.
Save even more by using the Economy mode. Speed will reduce, but with no loss in lifting or digging forces. See savings of up to 20%.
Boom and Stick regeneration circuits reduce fuel consumption by up to 2% while improving cycle times.
Use automatic engine speed control (AEC) during no-load or light-load conditions to automatically reduce engine speed to minimize fuel consumption.
Standard one-touch low idle saves fuel by instantly reducing engine speed to 1,000 rpm at the push of a button. Return the engine speed to the throttle position by hitting the button again or simply moving the joysticks.
Electronic Tandem hydraulic pumps deliver up to 7% more efficiency with less internal friction losses and superior design. Each pump can produce a maximum flow of 214.5 L/min (56.7 gal/min). Hydraulic system components are close together to minimize power loss from friction and pressure drops.
Optional Fuel Flow meter aids in reporting the fuel consumption through VisionLink.

LOWER MAINTENANCE COSTS

Up to 15% lower maintenance costs than the first generation of 320D3's models, with advanced hydraulic oil filter design and reduced number of filters.
Hydraulic system does not require a pilot filter, eliminating a filter that had to be changed frequently.
Updated hydraulic filter design. Preventing oil contaminants entering the system during filter change no longer requires a capsule design.
Drain filter is replaced with a cleanable screen and magnet.
Extended first engine oil change interval (500 hours), and maintenance-free batteries.
A two-stage fuel filtering system with integrated water separator protects the engine from particles larger than four microns when fuel quality is less than ideal.
There is no need to manually prime the fuel system after fuel filter changes. The standard electric priming pump reduces the risk of contamination by preventing unfiltered fuel from entering the fuel system.
Easily maintain your machine. Most service locations are easily accessible at ground level for quick, efficient servicing. to allow service and maintenance to get completed quickly and efficiently. A service door on the right side of the upper structure allows ground-level access to the hydraulic pumps, hydraulic filters, engine oil filter, and fuel filters.
Proven, high-efficiency radial seal engine air filter behind the cab. The machine constantly monitors the engine air filter and will notify you, via the monitor, when service is required.
A remote greasing block on the boom allows the greasing of hard-to-reach locations. A remote mounted greasing point on the swing bearing allows ease of service.
VisionLink™ comes standard so you can remotely monitor machine health, location, hours, and absolute fuel level on demand through the online interface.

Powerful 6-cylinder engine.
Choice of bucket to match your application, with an optional larger Cat Bucket 1.14 m³ (1.49 yd3) General-duty resulting in increased performance.
Electrohydraulic control valve, pump and ECM introduced for better controllability and lower fuel consumption.
Dig and lift from a stable platform created by the heavy-duty counterweight and eight-roller undercarriage.
The excavator has a high-ambient capability of 52° C (125° F) and cold start capability of –18° C (0° F). An optional –32° C (–25° F) cold start package is available.
Add versatility by adding tool control to run a hammer or other tools requiring one-way flow. Order tool control with the machine or add it later with a dealer-installed kit.
Balance power and efficiency using the open-center, positive flow control electro-hydraulic system.
Hydraulic cross-sensing makes full engine power always available from hydraulic pumps regardless of which function is used.
HD boom and HD sticks allow durable performance.

WORK IN COMFORT

The updated spacious cab design provides excellent visibility from the operator’s seat to keep you aware of your surroundings - without bending or straining to see.
In-cab high-resolution 203 mm (8 in) touch screen display are easy to use, intuitive and user-friendly.
Work a full day with less fatigue using the ergonomically designed electro-hydraulic joysticks matched to operator’s wrist and arm position. Joystick consoles can be adjusted, further improving operator comfort and productivity.
Easy to access radio controls, engine throttle, wiper controls and Bluetooth phone pairing for operator convenience.
Improved automatic climate control helps maintain consistent cab temperature. Five outlets ensure proper air circulation to keep you comfortable regardless of outside temperatures.
Ergonomically designed seat to improve operator’s comfort. Wide adjustable armrests and retractable seatbelt are also included.
Standard Cab Equipment. To enhance operator comfort and productivity, the cab includes a radio, lighter, drink holder, coat hook, service meter, literature holder, magazine rack and storage compartment.
Keep your phone or other personal electronics charged using the 24V auxiliary power ports delivering up to 5A of power.
There is plenty of room for you to store your gear. There are two storage locations at the rear of the right console and one space for your lunchbox behind the seat.

BUILT-IN SAFETY FEATURES

We designed the cab to provide excellent visibility from the operator’s seat. In addition, two standard mirrors help keep you aware of your surroundings.
The machine provides you a work platform for all routine service and maintenance needs. Anti-skid plating with countersunk bolts reduces the potential for slippage and trip hazards.
Grips on the track frame, service platform, cab and battery compartment for an easy climb up and down from the service platform and operator station.
Handrails and hand hold are provided for easy access.
Optional rearview cameras with additional mirror enhance visibility behind the machine.
Optional ROPS compliant cab is now available.
Ground level access to engine secondary shut-off feature.
The hydraulic lockout lever prevents operators from leaving the cab without first isolating all hydraulic functions.
A lockable disconnect switch isolates the battery and enhances safety by disconnecting the electrical energy when servicing the machine.
A full-length firewall separates the engine from the hydraulic pump and offers protection in the event of an incident.
The machine can be equipped with Operator Protective Guards (OPG) that conforms to the ISO 10262:1998 standard. These guards are bolted directly to the cab shell.

Specifications Standard Equipment Optional Equipment

Product Specifications for 320D3

Engine

Net Power - ISO 9249	123 hp 92 kW
Net Power - ISO 9249 (DIN)	125 hp (metric) 125 hp (metric)
Engine Model	ALUW06DTI ALUW06DTI
Engine Power - ISO 14396:2002	134 hp 100 kW
Engine Power - ISO 14396 (DIN)	136 hp (metric) 136 hp (metric)
Bore	4 in 104 mm
Stroke	4 in 113 mm
Displacement	351 in³ 5.8 l
Biodiesel Capability	Up to B10 Up to B10
Emissions	Non-certified emission engine. Non-certified emission engine.
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 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture. 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 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.

Hydraulic System

Main System - Maximum Flow	429 l/min (113 gal/min) 429 l/min (113 gal/min)
Maximum Pressure - Equipment	5075 psi 35000 kPa
Maximum Pressure - Travel	5075 psi 35000 kPa
Maximum Pressure - Swing	3625 psi 25000 kPa

Swing Mechanism

Swing Speed	11.88 r/min 11.88 r/min
Maximum Swing Torque	45581 ft·lbf 62 kN·m

Weights

Operating Weight	46300 lb 21000 kg
Note	4.3 m (13'11") Long undercarriage, 5.7 m (18'8") HD Reach boom, 2.5 m (8'2") HD Reach stick, 1.14 m³ (1.49 yd³) GD bucket, 600 mm (24") triple grouser shoes and 3650 kg (8,050 lb) counterweight. 4.3 m (13'11") Long undercarriage, 5.7 m (18'8") HD Reach boom, 2.5 m (8'2") HD Reach stick, 1.14 m³ (1.49 yd³) GD bucket, 600 mm (24") triple grouser shoes and 3650 kg (8,050 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity	92.5 gal (US) 350 l
Cooling System	5 gal (US) 19 l
Engine Oil	4.8 gal (US) 18 l
Swing Drive - Each	1.6 gal (US) 6 l
Final Drive - Each	1.3 gal (US) 5 l
Hydraulic System - Including Tank	57.6 gal (US) 218 l
Hydraulic Tank	30.4 gal (US) 115 l

Dimensions

Boom	HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick	HD Reach 2.5 m (8'2") HD Reach 2.5 m (8'2")
Bucket	GD 1.14 m³ (1.49 yd³) GD 1.14 m³ (1.49 yd³)
Shipping Height - Top of Cab	10 ft 3050 mm
Handrail Height	9.11 ft 3015 mm
Shipping Length	31.3 ft 9530 mm
Tail Swing Radius	9 ft 2750 mm
Counterweight Clearance	3.4 ft 1020 mm
Ground Clearance	1.6 ft 450 mm
Track Length	13.11 ft 4250 mm
Length to Center of Rollers	11.3 ft 3450 mm
Track Gauge	7.1 ft 2380 mm
Transport Width	9.9 ft 2980 mm

Working Ranges & Forces

Maximum Digging Depth	20.8 ft 6300 mm
Boom	HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick	HD Reach 2.5 m (8'2") HD Reach 2.5 m (8'2")
Bucket	GD 1.14 m³ (1.49 yd³) GD 1.14 m³ (1.49 yd³)
Maximum Reach at Ground Level	31.1 ft 9470 mm
Maximum Cutting Height	30.4 ft 9250 mm
Maximum Loading Height	20.8 ft 6290 mm
Minimum Loading Height	8.6 ft 2590 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	19.7 ft 5960 mm
Maximum Vertical Wall Digging Depth	18.9 ft 5720 mm
Bucket Digging Force - ISO	30350 lbf 135 kN
Stick Digging Force - ISO	26530 lbf 118 kN

320D3 Standard Equipment

NOTE

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

CAB

Sound suppressed cab with viscous mounts

High-resolution 203 mm (8") LCD touchscreen monitor

Mechanically adjustable seat with headrest

Automatic bi-level air conditioner

Keyless push-to-start engine control

1-button joystick

AM/FM radio with USB and aux port

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Upper radial wiper with washer

Openable steel hatch

Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink®

ENGINE

Diesel engine, ALUW06DTI/8 - mechanical governor - emits equivalent to U.S. EPA Tier 2, not-certified

Two selectable power modes: Standard, Eco

One-touch low idle with auto engine speed control

Two stage fuel filtration system with water separator and indicator

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

4000 m (13,120 ft) altitude capability

Radial seal air filter with double filter element

HYDRAULIC SYSTEM

Electronic main control valve, hammer ready

Back-to-back electronic pump

Boom and stick regeneration circuits

Automatic hydraulic warm up

Automatic two-speed travel

High performance hydraulic return filter

BOOM AND STICK

5.7 m (18'8") HD Reach boom

2.5 m (8'2") HD Reach stick

UNDERCARRIAGE and STRUCTURES

600 mm (24 in) triple grouser shoes (10 mm/0.4 in thick)

Grease lubricated track links

Tie down points on base frame

Center track guiding guard

Segmented track guiding guard

3650 kg (8,050 lb) counterweight

ELECTRICAL SYSTEM

Two 750 CCA maintenance free batteries

LED chassis and cab lights

LED left-side boom light

SERVICE AND MAINTENANCE

Grouped engine oil, fuel, and hydraulic oil filters

Sampling ports for Scheduled Oil Sampling (S.O.S)

Radiator screen for radiator/oil cooler

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Handrail and handhold

Lockable external tool/storage box

Signaling/warning horn

Hydraulic lockout lever

320D3 Optional Equipment

NOTE

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

ENGINE

-32° C (-25° F) cold start capability

Air precleaner

Fuel flow meter

HYDRAULIC SYSTEM

Hammer lines

Hammer return filter

UNDERCARRIAGE and STRUCTURES

4250 mm (13'11") long undercarriage

4080 mm (13'5") standard undercarriage

ELECTRICAL

LED right-side boom light

SAFETY AND SECURITY

Rollover Protective Structure (ROPS)

Operator Protective Guards (OPG) with matching lights with matching lights

Rearview camera

Travel alarm

Product Specifications for 320D3

Download Print

Engine

Net Power - ISO 9249	123 hp 92 kW
Net Power - ISO 9249 (DIN)	125 hp (metric) 125 hp (metric)
Engine Model	ALUW06DTI ALUW06DTI
Engine Power - ISO 14396:2002	134 hp 100 kW
Engine Power - ISO 14396 (DIN)	136 hp (metric) 136 hp (metric)
Bore	4 in 104 mm
Stroke	4 in 113 mm
Displacement	351 in³ 5.8 l
Biodiesel Capability	Up to B10 Up to B10
Emissions	Non-certified emission engine. Non-certified emission engine.
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 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture. 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 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.

Hydraulic System

Main System - Maximum Flow	429 l/min (113 gal/min) 429 l/min (113 gal/min)
Maximum Pressure - Equipment	5075 psi 35000 kPa
Maximum Pressure - Travel	5075 psi 35000 kPa
Maximum Pressure - Swing	3625 psi 25000 kPa

Swing Mechanism

Swing Speed	11.88 r/min 11.88 r/min
Maximum Swing Torque	45581 ft·lbf 62 kN·m

Weights

Operating Weight	46300 lb 21000 kg
Note	4.3 m (13'11") Long undercarriage, 5.7 m (18'8") HD Reach boom, 2.5 m (8'2") HD Reach stick, 1.14 m³ (1.49 yd³) GD bucket, 600 mm (24") triple grouser shoes and 3650 kg (8,050 lb) counterweight. 4.3 m (13'11") Long undercarriage, 5.7 m (18'8") HD Reach boom, 2.5 m (8'2") HD Reach stick, 1.14 m³ (1.49 yd³) GD bucket, 600 mm (24") triple grouser shoes and 3650 kg (8,050 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity	92.5 gal (US) 350 l
Cooling System	5 gal (US) 19 l
Engine Oil	4.8 gal (US) 18 l
Swing Drive - Each	1.6 gal (US) 6 l
Final Drive - Each	1.3 gal (US) 5 l
Hydraulic System - Including Tank	57.6 gal (US) 218 l
Hydraulic Tank	30.4 gal (US) 115 l

Dimensions

Boom	HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick	HD Reach 2.5 m (8'2") HD Reach 2.5 m (8'2")
Bucket	GD 1.14 m³ (1.49 yd³) GD 1.14 m³ (1.49 yd³)
Shipping Height - Top of Cab	10 ft 3050 mm
Handrail Height	9.11 ft 3015 mm
Shipping Length	31.3 ft 9530 mm
Tail Swing Radius	9 ft 2750 mm
Counterweight Clearance	3.4 ft 1020 mm
Ground Clearance	1.6 ft 450 mm
Track Length	13.11 ft 4250 mm
Length to Center of Rollers	11.3 ft 3450 mm
Track Gauge	7.1 ft 2380 mm
Transport Width	9.9 ft 2980 mm

Working Ranges & Forces

Maximum Digging Depth	20.8 ft 6300 mm
Boom	HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick	HD Reach 2.5 m (8'2") HD Reach 2.5 m (8'2")
Bucket	GD 1.14 m³ (1.49 yd³) GD 1.14 m³ (1.49 yd³)
Maximum Reach at Ground Level	31.1 ft 9470 mm
Maximum Cutting Height	30.4 ft 9250 mm
Maximum Loading Height	20.8 ft 6290 mm
Minimum Loading Height	8.6 ft 2590 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	19.7 ft 5960 mm
Maximum Vertical Wall Digging Depth	18.9 ft 5720 mm
Bucket Digging Force - ISO	30350 lbf 135 kN
Stick Digging Force - ISO	26530 lbf 118 kN

320D3 Standard Equipment

Print

NOTE

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

CAB

Sound suppressed cab with viscous mounts

High-resolution 203 mm (8") LCD touchscreen monitor

Mechanically adjustable seat with headrest

Automatic bi-level air conditioner

Keyless push-to-start engine control

1-button joystick

AM/FM radio with USB and aux port

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Upper radial wiper with washer

Openable steel hatch

Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink®

ENGINE

Diesel engine, ALUW06DTI/8 - mechanical governor - emits equivalent to U.S. EPA Tier 2, not-certified

Two selectable power modes: Standard, Eco

One-touch low idle with auto engine speed control

Two stage fuel filtration system with water separator and indicator

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

4000 m (13,120 ft) altitude capability

Radial seal air filter with double filter element

HYDRAULIC SYSTEM

Electronic main control valve, hammer ready

Back-to-back electronic pump

Boom and stick regeneration circuits

Automatic hydraulic warm up

Automatic two-speed travel

High performance hydraulic return filter

BOOM AND STICK

5.7 m (18'8") HD Reach boom

2.5 m (8'2") HD Reach stick

UNDERCARRIAGE and STRUCTURES

600 mm (24 in) triple grouser shoes (10 mm/0.4 in thick)

Grease lubricated track links

Tie down points on base frame

Center track guiding guard

Segmented track guiding guard

3650 kg (8,050 lb) counterweight

ELECTRICAL SYSTEM

Two 750 CCA maintenance free batteries

LED chassis and cab lights

LED left-side boom light

SERVICE AND MAINTENANCE

Grouped engine oil, fuel, and hydraulic oil filters

Sampling ports for Scheduled Oil Sampling (S.O.S)

Radiator screen for radiator/oil cooler

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Handrail and handhold

Lockable external tool/storage box

Signaling/warning horn

Hydraulic lockout lever

320D3 Optional Equipment

Print

NOTE

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

ENGINE

-32° C (-25° F) cold start capability

Air precleaner

Fuel flow meter

HYDRAULIC SYSTEM

Hammer lines

Hammer return filter

UNDERCARRIAGE and STRUCTURES

4250 mm (13'11") long undercarriage

4080 mm (13'5") standard undercarriage

ELECTRICAL

LED right-side boom light

SAFETY AND SECURITY

Rollover Protective Structure (ROPS)

Operator Protective Guards (OPG) with matching lights with matching lights

Rearview camera

Travel alarm

See how 320D3 compares against frequently compared products.

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320D3

320D3

Net Power - ISO 9249: 123 hp; 92 kW
Operating Weight: 46300 lb; 21000 kg
Maximum Digging Depth: 20.8 ft; 6300 mm

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323D3

323D3

Net Power - ISO 9249: 142 hp; 106 kW
Operating Weight: 49800 lb; 22600 kg
Maximum Digging Depth: 20.8 ft; 6300 mm

View Details

Excavators

326 - Tier 3

326 - Tier 3

Net Power - ISO 9249: 212 hp; 157.8 kW
Operating Weight: 56600 lb; 25700 kg
Maximum Digging Depth: 22.4 ft; 6820 mm

View Details

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320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

320D3 Medium Hydraulic Excavator

Cat 320D3 / 323D3 Hydraulic Excavators Video

Cat Excavator 320D3 at work - social media clip

Cat 320D3 / 323D3 Hydraulic Excavators Video

Cat Excavator 320D3 at work - social media clip

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