323D3

HYDRAULIC EXCAVATOR

Engine Power
ISO 14396 113 kW (152 hp)
ISO 14396 (DIN) 154 hp (metric)
Operating Weight 22 600 kg (49,800 lb)

The Cat® 323D3 meets UN R96 Stage II emission standards, equivalent to U.S. EPA Tier 2 and EU Stage II.
 NEXT GENERATION EXCAVATORS
Cat excavators are designed with an approach to equipment families that gives you:
+ MORE MODEL OPTIONS
+ MORE PRICE POINTS
Ready to help you make your business stronger, Cat excavators give you new ways to get the most work done
at the lowest cost – so you put more money in your pocket.

CAT 323D3
Lower your cost per ton.

® The Cat 323D3 Excavator

brings speed, efficiency,
and high productivity to
your heavy-duty, high-
production applications.

GET MORE DONE.

2 323D3 HYDRAULIC EXCAVATOR
MAXIMUM FUEL EFFICIENCY
DURABILITY SAVINGS ADD UP
Ensure productivity in the toughest jobs with a 1.20 m³/1.4 m
wide severe-duty bucket, reinforced structures and front parts, SCENARIO:
and a robust undercarriage and carbody. R
R YEA Excavators working in a
PE medium-duty application,
RN 2,500 hours/year
BU

UP TO 10% LOWER
L
FUE

THE ADVANTAGE
FUEL CONSUMPTION*
The latest Electro-Hydraulic (EH) system, Eco mode, and 3850 L | 1,016 GAL
optional fuel consumption tracking in VisionLink® provide more SAVED!
control to enable optimized fuel consumption.

NEW 323D3
34 650 L | 9,148 GAL

UP TO 15% REDUCED 323D3

MAINTENANCE COSTS** 38 500 L | 10,164 GAL

Maximize uptime and extended service intervals, thanks to

CALCULATION:
advanced hydraulic oil filter design and no pilot and case
drain filters. A two-stage fuel filter and anti-rust fuel tank help 323D3: NEW 323D3:
15.4 L/HR × 2,500 HR/YR = 38 500 L/YR (15.4 L/HR × 90%) × 2,500 HR/YR = 34 650 L/YR
protect the engine against low-quality fuel. 4.1 GAL/HR × 2,500 HR/YR = 10,164 GAL/YR (4.1 GAL/HR × 90%) × 2,500 HR/YR = 9,148 GAL/YR

* Compared to 323D3 model prior to Annual Product Update 2021. Productivity, fuel, and CO2 emissions
vary by application. Estimated average fuel consumption improvements are based on tests or
Product Link™ data where available. Productivity improvements are based on test data.
** Compared to 323D3 Prefix FEY.
323D3 HYDRAULIC EXCAVATOR 3
 HIGH PERFORMANCE DIGGING FOR YOUR
HIGH-PRODUCTION APPLICATION
The Cat 323D3 Excavator is designed with your heavy-duty,
high-production needs in mind.

GET MORE DONE WITH:

+ New and reinforced bucket resulting in increased
performance and longer life.

+ Be productive with a large Cat 1.20 m³ (1.57 yd³) severe-

duty abrasive resistance bucket.

+ Dig and lift from a stable platform created by the heavy-

duty counterweight and eight-roller undercarriage.

4 323D3 HYDRAULIC EXCAVATOR

USE UP TO 10%* LESS FUEL
BY ADAPTING YOUR MACHINE TO SUIT YOUR JOB

ECONOMY MODE BOOM AND STICK REGENERATION

See an incremental 10% fuel savings if using ECO Boom and stick regeneration circuits reduce fuel
mode with no loss of lifting or digging forces. Optional consumption by up to 2% while improving cycle times.
Fuel Flow meter aids in reporting the fuel consumption
through VisionLink.

AUTO ENGINE SPEED CONTROL ONE-TOUCH LOW IDLE

Use automatic engine speed control during no-load or Standard one-touch low idle saves fuel by instantly
light-load conditions to automatically reduce engine reducing engine speed to 1,000 rpm at the push of a
speed to minimize fuel consumption. button. Return the engine speed to the throttle position
by hitting the button again or simply moving the joysticks.

*Compared to 323D3 prefix FEY. Productivity, fuel, CO2 emissions vary by application. Estimated fuel
consumption improvements are based on engineering calculations and validated by tests.

323D3 HYDRAULIC EXCAVATOR 5

 INCREASE EFFICIENCY WITH AN
ELECTRO-HYDRAULIC SYSTEM

HYDRAULIC PUMP AND EFFICIENT HYDRAULIC SMART LAYOUT

MAIN VALVE SYSTEM Put hydraulic power where you need
it. Hydraulic system components are
The electro-hydraulic tandem pump and Balance power and efficiency using
positioned close together for optimum
main valve work together to generate more the open-center, negative flow control
efficiency.
power, a faster response, and more fuel hydraulic system. Hydraulic cross-sensing
efficiency than the previous 323D3 model. makes full engine power always available
from hydraulic pumps regardless of which
function is used.

6 323D3 HYDRAULIC EXCAVATOR

LOWER FEWER FILTERS
MAINTENANCE MEANS LESS
COSTS MAINTENANCE
UP TO 15%* THE 323D3
LOWER MAINTENANCE COSTS WITH:
USES FEWER FILTERS
COMPARED TO THE PAST MODELS.
+ An integrated pilot system eliminates the need for a
dedicated pilot filter, and the redesigned drain system
alllows for the elimination of the drain filter

+ The new hydraulic oil filter design provides improved

filtration performance and needs replacing only every
3,000 hours

+ Hydraulic oil change interval can go up to 6,000 hours

+ Maintenance-free batteries

+ Easily accessible maintenance locations to reduce Fewer filters over the machine’s lifetime.
service time

GROUND LEVEL MAINTENANCE RADIAL SEAL ENGINE AIR FILTER

Most service locations are easily accessible at ground level to Easily access the proven, high-efficiency radial seal engine
allow service and maintenance to get completed quickly and air filter behind the cab. The machine constantly monitors the
efficiently. A service door on the right side of the upper structure engine air filter and will notify you, via the monitor, when service
allows ground-level access to the hydraulic pumps, hydraulic is required.
filters, engine oil filter, and fuel filters.

GREASING MADE EASY SINGLE PLANE DESIGN

A remote greasing block on the boom allows the greasing of Routine cleaning is made easier with the single plane cooling
hard-to-reach locations. A remote mounted greasing point on package design.
the swing bearing allows ease of service.

GROUND LEVEL RADIAL SEAL ENGINE REMOTE GREASING SINGLE PLANE

MAINTENANCE AIR FILTER COOLING PACKAGE

*Compared to 323D3 Prefix FEY.

323D3 HYDRAULIC EXCAVATOR 7

 PROVEN RELIABILITY The 323D3 Excavator uses
reinforced structures, a heavy-

THAT DELIVERS
duty, eight-roller undercarriage,
and a durable swing system that
helps absorb stresses caused

PEACE OF MIND by swing torque – delivering a

machine you can rely on.

GREASE LUBRICATED REINFORCED FRONT TIME-PROVEN

UNDERCARRIAGE STRUCTURES CARBODY
Undercarriage rollers are rebuildable and We designed the heavy-duty stick and The X-shaped, box-section carbody
sealed to prevent dirt and debris from boom structures using high-tensile steel provides excellent resistance to torsional
causing internal wear. Grease lubricated fabricated into a large box section with bending, dissipating stress throughout
links minimize internal bushing wear, internal baffles to absorb torsional stress. the base of the machine.
reducing noise and increasing life up to
25%.

8 323D3 HYDRAULIC EXCAVATOR

 ROBUST FUEL SYSTEM
Expect reliable performance from the double-filtered low-
pressure fuel system and anti-rust fuel tank that protects the
engine from lower quality fuel. The two-stage filtering system
with integrated water separator protects the engine from
particles larger than 4 microns.

HYDRAULIC FILTER GUARDS COME STANDARD

Updated hydraulic filter design prevents The standard, integrated idler guard helps maintain track
oil contaminants from entering the system alignment while traveling or working on the slopes.
during a filter change. Hydraulic system
does not require a pilot filter, eliminating a Robust bottom guards protect machine components that might
filter that has to be changed frequently. be damaged while swinging. A thicker bottom guard plate is
used under the pump compartment to protect the suction hose.

DURABLE SWING SYSTEM

The swing system uses a ball bearing to help absorb
stresses caused by swing torque.

323D3 HYDRAULIC EXCAVATOR 9

WORK IN COMFORT ALL DAY
STAY PRODUCTIVE AND EFFICIENT FROM START TO FINISH
Sites where excavators typically work are rugged and challenging. That’s why it’s important that the 323D3 cab protects the operator
as much as possible from fatigue, stresses, sounds, and temperatures of the job.

VISIBILITY INSIDE AND OUT

INSIDE: Critical machine information is always visible in the
high-resolution 203 mm (8 in) touchscreen display. Easy to use,
intuitive, and user-friendly menus mean more time working and
less time looking for information.

OUTSIDE: The spacious cab provides excellent visibility from the

operator’s seat to keep you aware of your surroundings – without
bending or straining to see.

ADJUST TO SUIT YOUR NEEDS

Work a full day with less fatigue using the ergonomically-
designed electro-hydraulic joysticks matched to operator’s wrist
and arm position. Joystick consoles and seat can be adjusted,
further improving operator comfort and productivity for a variety
of operator sizes and weights.

Easy-to-access radio controls, engine throttle, wiper controls and

Bluetooth® phone pairing for operator convenience.

COMFORTABLE CLIMATE ALL YEAR ROUND

Automatic climate control helps maintain consistent cab
temperature. Five outlets ensure proper air circulation to keep
you comfortable regardless of outside temperatures.

10 323D3 HYDRAULIC EXCAVATOR

FEEL SAFE AT WORK
EVERY DAY WITH CAT EXCAVATORS
Caterpillar builds safety into every machine, allowing operators and service technicians to work safely and get home
safely every day.

EASY-TO-ISOLATE HYDRAULICS
The standard hydraulic lockout lever prevents operators from
leaving the cab without first isolating all hydraulic functions.
When necessary, you can activate the ground level shutoff switch
to stop the fuel to the engine and shut down the machine.

SERVICE SAFELY
The machine provides you a safe work platform for all
routine service and maintenance needs. Anti-skid plating
with countersunk bolts reduces the potential for slippage
and trip hazards.

A battery disconnect switch enhances safety when servicing the

machine by isolating the battery.

FULL-LENGTH FIREWALL
A full-length firewall separates the engine from the hydraulic
pump and offers protection in the event of an incident.

323D3 HYDRAULIC EXCAVATOR 11

 INCREASE YOUR PRODUCTIVITY AND PROFIT
WITH CAT ATTACHMENTS
You can easily expand the performance of your machine by utilizing Cat attachments. Each Cat attachment
is designed to fit the weight and horsepower of Cat excavators for improved performance, safety, and stability.

BUCKETS HYDRAULIC HAMMERS

12 323D3 HYDRAULIC EXCAVATOR

 VISIONLINK®
TAKES THE GUESSWORK OUT OF
MANAGING YOUR EQUIPMENT

VisionLink takes the guesswork out of managing your entire fleet – regardless of size or equipment manufacturer.* Review equipment
data from your desktop or mobile device to maximize uptime and optimize assets. With interactive dashboards, VisionLink makes it
easier for operations of all sizes to make informed decisions that lower costs, simplify maintenance, and improve safety and security on
your jobsite. With different subscription-level options, your Cat dealer can help you determine what you need to connect your fleet and
manage your business.

*Data field availability can vary by equipment manufacturer.

323D3 HYDRAULIC EXCAVATOR 13

TECHNICAL SPECIFICATIONS
See cat.com for complete specifications.

ENGINE SERVICE REFILL CAPACITIES

Engine Model Cat® C7.1 Fuel Tank Capacity 390 L 103 gal
Biodiesel Capability Up to B20(¹) Cooling System 28 L 7.4 gal
Net Power – ISO 9249 106 kW 142 hp Engine Oil 18 L 4.8 gal
Net Power – ISO 9249 DIN 144 hp (metric) Swing Drive (each) 6L 1.6 gal
Engine Power – ISO 14396 113 kW 152 hp Final Drive (each) 5L 1.3 gal
Engine Power – ISO 14396 DIN 154 hp (metric) Hydraulic System (including tank) 218 L 57.6 gal
Bore 105 mm 4 in Hydraulic Tank 115 L 30.4 gal
Stroke 135 mm 5 in
DIMENSIONS
Displacement 7.01 L 428 in3
Boom HD Reach 5.7 m (18'8")
• The 323D3 meets UN R96 Stage II emission standards, equivalent to U.S.
Stick HD Reach 2.5 m (8'2")
EPA Tier 2 and EU Stage II.
• Recommended for use up to 4000 m (13,120 ft) altitude with engine power Bucket SD 1.20 m 3 (1.57 yd 3)
derate above 3000 m (9,840 ft). Shipping Height (top of cab) 3050 mm 10 ft
• Advertised power is tested per the specified standard in effect at the time Handrail Height 3015 mm 9.11 ft
of manufacture.
Shipping Length 9530 mm 31.3 ft
• Net power advertised is the power available at the flywheel when the
engine is equipped with fan, air intake system, exhaust system and Tail Swing Radius 2750 mm 9 ft
alternator. Counterweight Clearance 1020 mm 3.4 ft
• Engine speed at 1,800 rpm.
Ground Clearance 450 mm 1.6 ft
¹ Cat engines are compatible with diesel fuel blended with the following
( )

lower-carbon intensity fuels** up to: Track Length 4460 mm 14.8 ft

• 100% biodiesel FAME (fatty acid methyl ester) * or Length to Center of Rollers 3650 mm 12 ft
• 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL
Track Gauge 2380 mm 7.1 ft
(gas-to-liquid) fuels. Refer to guidelines for successful application. Please
consult your Cat dealer or “Caterpillar Machine Fluids Recommendationss” Transport Width 2980 mm 9.9 ft
(SEBU6250) for details.
*For use of blends higher than 20% biodiesel, consult your Cat dealer. WORKING RANGES AND FORCES
**Tailpipe greenhouse gas emissions from lower-carbon intensity fuels Boom HD Reach 5.7 m (18'8")
are essentially the same as traditional fuels.
Stick HD Reach 2.5 m (8'2")

HYDRAULIC SYSTEM Bucket SD 1.20 m 3 (1.57 yd 3)

Main System – Maximum Flowt 429 L/min 113 gal/min Maximum Digging Depth 6300 mm 20.8 ft
Maximum Pressure – Equipment 35 000 kPa 5,075 psi Maximum Reach at Ground Level 9470 mm 31.1 ft
Maximum Pressure – Travel 35 000 kPa 5,075 psi Maximum Cutting Height 9250 mm 30.4 ft
Maximum Pressure – Swing 25 000 kPa 3,625 psi Maximum Loading Height 6290 mm 20.8 ft
Minimum Loading Height 2590 mm 8.6 ft
SWING MECHANISM
Maximum Depth Cut for 2440 mm (8'0") 5960 mm 19.7 ft
Swing Speed 11.88 r/min Level Bottom
Maximum Swing Torque 62 kN•m 45,581 lbf-ft Maximum Vertical Wall Digging Depth 5720 mm 18.9 ft
MACHINE WEIGHTS Bucket Digging Force (ISO) 147 kN 33,050 lbf
Operating Weight 22 600 kg 49,800 lb Stick Digging Force (ISO) 111 kN 24,950 lbf

14 323D3 HYDRAULIC EXCAVATOR

STANDARD & OPTIONAL EQUIPMENT
Standard and optional equipment may vary. Consult your Cat dealer for details.

UNDERCARRIAGE AND STRUCTURES STANDARD OPTIONAL BOOM AND STICK STANDARD OPTIONAL
600 mm (24 in) triple grouser shoes 5.7 m (18'8") HD Reach boom 

(12 mm/0.5 in thick) 2.5 m (8'2") HD Reach stick 
Grease lubricated track links 
ELECTRICAL SYSTEM STANDARD OPTIONAL
Tie down points on base frame 
Two 750 CCA maintenance free batteries 
Center track guiding guard 
Centralized electrical disconnect switch 
Segmented HD track guiding guard 
LED chassis and cab lights 
Heavy-duty track rollers 
LED left-side boom light 
4000 kg (8,820 lb) counterweight 
LED right-side boom lights 
4460 mm (14'8") long undercarriage 
600 mm (24") triple grouser shoes (10 SERVICE AND MAINTENANCE STANDARD OPTIONAL

mm/0.4" thick)
Engine oil, fuel, and hydraulic oil filters

Full length track guiding guard  grouped for ease of maintenance
CAB STANDARD OPTIONAL Scheduled Oil Sampling (S•O•SSM) ports 

Sound suppressed cab with viscous mounts  Radiator screen for radiator/oil cooler 

High-resolution 203 mm (8") LCD HYDRAULIC SYSTEM STANDARD OPTIONAL


touchscreen monitor
Electronic main control valve,
Mechanically adjustable seat with headrest  
hammer ready
Automatic bi-level air conditioner 
Back-to-back electronic pump 
Keyless push-to-start engine control 
Boom and stick regeneration circuits 
1-button joystick 
Automatic hydraulic warm up 
AM/FM radio with USB and auxiliary port 
Automatic two-speed travel 
24V DC outlet 
High performance hydraulic return filter 
Cup holder and storage compartments 
Hammer lines 
70/30 tempered glass windshield 
Hammer return filter 
Upper radial wiper with washer 
TECHNOLOGY STANDARD OPTIONAL
Openable steel hatch 
VisionLink® 
Dome light 

Washable floor mat  SAFETY AND SECURITY STANDARD OPTIONAL

3-button joystick  Anti-skid plating with countersunk bolts 

Handrail and handhold 

ENGINE STANDARD OPTIONAL
Lockable external tool/storage box 
Diesel engine, C7.1 1106C – mechanical
governor – meets UN R96 Stage II,  Signaling/warning horn 
equivalent to Tier 2 and Stage II Hydraulic lockout lever 
Two selectable power modes: Standard, Eco  ROPS 
One-touch low idle with auto engine speed OPG with matching lights 

control (AEC)
Rearview camera 
Two stage fuel filtration system with water
separator and indicator
 Travel alarm 

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

4000 m (13,120 ft) altitude capability 

Radial seal air filter with double filter element 

Electric fuel priming pump 

Biodiesel capability (up to B20) 

–32° C (–25° F) cold start capability 

Air pre-cleaner 

Engine fuel flow meter 

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area.
For additional information, refer to the Technical Specifications brochures for the 323D3 available at www.cat.com or your Cat dealer.

323D3 HYDRAULIC EXCAVATOR 15

For more complete information on Cat products, dealer services and industry solutions, visit us on the web at www.cat.com AEXQ2416-03 (11-2023)
Replaces AEXQ2416-02
VisionLink is a trademark of VirtualSite Solutions LLC, registered in the United States and in other countries. (India)

Materials and specifications are subject to change without notice. Featured machines in photos may include additional
equipment. See your Cat dealer for available options.

© 2023 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, Product Link, S•O•S,
"Caterpillar Corporate Yellow", the "Power Edge" and Cat “Modern Hex” trade dress as well as corporate and product identity
used herein, are trademarks of Caterpillar and may not be used without permission.