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450 Backhoe Loader

The Cat® 450 Backhoe Loader delivers improved machine performance, a superior hydraulic system, improved operator controls and ergonomics, and overall versatility.

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Net Power - SAE J1349131HP




Net Peak Torque SAE J1349307ft·lbf

EmissionsEngine meets U.S. EPA Tier 4 Final emission standards.

NoteNo derating required up to 2286 m (7,500 ft).

Ratings at 2,200 rpm - Gross Power ISO 14396143HP

Net Power - 2,200 rpm - SAE J134968HP

Net Peak Power Rating - SAE J1349134HP

Net Power Rating at 2,200 rpm - SAE J1349131HP

Net Peak Power Rating - ISO 9249134HP

Net Torque Rise - 1,200 rpm88%

Net Peak Power - 1,800 rpm - SAE J134972HP

Gross Power - SAE J199574HP

Net Peak Power - 1,800 rpm - ISO 924973HP

Rated Net Power - 2,200 rpm - ISO 924968HP

Net Peak Power - 1,800 rpm - EEC 80/126973HP

Rated Net Power - 2,200 rpm - EEC 80/126969HP

Ratings at 2,200 rpm - Gross Power SAE J1995146HP

Net Torque Rise - 1,400 rpm - SAE J1349400ft·lbf

Gross Power - ISO 1439674HP

Net Torque Rise - 1,400 rpm29%

Power Rating Conditions - No De-Rating Required Up To7500ft

Net Power Rating at 2,200 rpm - ISO 9249131HP

Engine ModelC4.4 ACERT 106 kW (143 hp) Electronic – Turbo Intercooled

Dig Depth - Standard17ft

Operating Weight - Maximum29321lb

Cab - ROPS/FOPS359lb

Air Conditioning101lb

Front Counterweight - Counterweights - Option 2530lb

Operating Weight - Estimated*24039lb

Backhoe Quick Coupler+151 kg (+333 lb)

Note (5)ED = Extreme Duty

Operating Weight - Maximum - ROPS Capacity29321lb

Note (1)*Machine equipped with 15-19.5 12 ply front and 21L-24 16 ply rear, AWD, OROPS, 1.34 m³ (1.75 yd³) general purpose bucket with bolt-on cutting edge, standard stick, 610 mm (24"") heavy-duty backhoe bucket.

Cab, ROPS/FOPS+243 kg (+536 lb)

Loader Bucket - 1.34 m³ (1.75 yd³) GP (Hook-On)–150 kg (–331 lb)

MP Bucket (1.00 m3/1.31 yd3) - With Fold-Over Forks2018lb

Loader Bucket - 1.34 m³ (1.75 yd³) MP ED (Hook-On)+160 kg (+353 lb)

Note (4)HD = Heavy Duty

Note (2)GP = General Purpose


Loader Bucket - 1.34 m³ (1.75 yd³) MP HD (Hook-On)+85 kg (+187 lb)

MP Bucket (1.00 m3/1.31 yd3) - Without Fold-Over Forks3622lb

Loader Bucket - 1.34 m³ (1.75 yd³) MP ED (Pin-On)+290 kg (+639 lb)

Loader Bucket - 1.34 m³ (1.75 yd³) MP HD (Pin-On)+214 kg (+472 lb)

Loader Bucket - 1.53 m³ (2.0 yd³) GP (Pin-On)+80 kg (+176 lb)

Front Counterweight - Counterweights - Option 1255lb

Loader Bucket - 1.53 m³ (2.0 yd³) GP (Hook-On)–73 kg (–162 lb)

Extendible Stick+338 kg (+745 lb)

Loader Quick Coupler+250 kg (+551 lb)

Note (3)MP = Multi Purpose

Rear Counterweight198lb

Front Counterweight - Counterweights - Option 31015lb

Pump TypeVariable Flow, Axial Piston

Pump Capacity at 2,200 rpm58.1gal/min

System Pressure - Loader3800psi

System Pressure - Hitch/Box Scraper2973psi

TypeClosed Center

System Pressure - Backhoe3800psi

Autoshift Transmission - Forward - 6th25.2mile/h

Autoshift Transmission - Reverse - 3rd16.9mile/h

Power Shuttle Transmission - Forward 3rd13mile/h

Autoshift Transmission - Reverse - 2nd7.8mile/h

Autoshift Transmission - Forward - 5th16.9mile/h

Power Shuttle Transmission - Reverse 4th23mile/h

Power Shuttle Transmission - Forward 1st3.4mile/h

Autoshift Transmission - Forward - 4th12.3mile/h

Power Shuttle Transmission - Reverse 2nd5.5mile/h

Power Shuttle Transmission - Forward 2nd5.5mile/h

Power Shuttle Transmission - Reverse 3rd13mile/h

Power Shuttle Transmission - Reverse 1st3.4mile/h

Autoshift Transmission - Forward - 1st3.7mile/h

Autoshift Transmission - Forward - 2nd6mile/h

Autoshift Transmission - Reverse - 1st3.7mile/h

Autoshift Transmission - Forward - 3rd7.8mile/h

Power Shuttle Transmission - Forward 4th23mile/h

NoteTravel speeds of two wheel drive backhoe loader at full throttle, when equipped with 21×24 rear tires.

Rear Axle (Center Housing)5gal (US)

Cooling System with Cab Heater6gal (US)

Cooling System with Air Conditioning4.4gal (US)

Front Axle (4WD)2.9gal (US)

Transmission (Autoshift) - AWD, Autoshift4.8gal (US)

Hydraulic Tank (Nominal)14.3gal (US)

Fuel Tank42.3gal (US)

Front Axle (Center Housing)2.9gal (US)

Planetaries0.2gal (US)

Diesel Exhaust Fluid (DEF)5gal (US)

Rear Axle - Planetaries0.4gal (US)

Front Axle (4WD) - Planetaries0.2gal (US)

Transmission - Power Shuttle - 2WD4gal (US)

Hydraulic System (Minimum)34.4gal (US)

Transmission - Power Shuttle - 4WD4gal (US)

Rear Axle4.4gal (US)

Hydraulic System23.8gal (US)

Hydraulic Tank10.6gal (US)

NoteRequires ultra-low sulfur fuel less than or equal to 15 ppm fuel sulfur

Engine Oil - With Filter2.3gal (US)


Rod Diameter1.65in

Turning Circle (inner wheel not braked) - Outside Widest Loader Bucket37.75ft

Turning Circle (inner wheel not braked) - Outside Front Wheels27.55ft

NoteAWD cylinder, one (1) double-acting.


Power SteeringHydrostatic HMU

TypeFront Wheel

Turning Circle - (inner wheel not braked) - Outside Front Wheels26.8ft

Turning Circle - (inner wheel not braked) - Outside Widest Loader Bucket36ft

Axle Oscillation11°

Rear Axle - Static47756lb

Rear Axle - Dynamic19103lb

Front Axle (4WD) - Dynamic20233lb

Front Axle (4WD) - Static50582lb

Front Axle, AWD - Static50565lb

Front Axle, AWD - Dynamic20225lb

Standard Stick - MP Loader Bucket - 4WDno counterweight

Standard Stick - GP Loader Bucket - 4WD255lb

Standard Configuration of Front/Rear TiresFront: 12.5 80/16.9; Rear: 16.9-24

Dig Depth - Standard3in


5185 mm (17 ft) center pivot excavator style backhoe

Adjustable auxiliary flow controls, loader and backhoe

Air cleaner

Alarm, back-up

Alternator, 150 amp

Audible system fault alarm

Automatic Engine Speed Control (AESC)

Autoshift transmission with six (6) forward and three (3) reverse gears and neutral safety switch

Backhoe Safety Manual

Battery Box, external, lockable

Battery disconnect switch

Battery, maintenance-free, 1,000 CCA

Boom transport lock

Brace, lift cylinder

Brake, SAHR secondary parking

Brakes, hydraulically boosted, oil disc, dual pedals, interlocking


Cat cushion swing system

CD-ROM Parts Manual

Coat restraint

Coolant/antifreeze, extended life

Counterweight, bumper, 974 kg (2,147 lb)

Diagnostic port for engine, machine and gauge cluster Electronic Control Modules

Differential lock, loader joystick

Dome light (cab only)

Engine enclosure, sound suppression removal panels

Engine, Cat C4.4 ACERT (Direct Injection Turbocharged), meets Tier 4 Final/Stage IV emission standards, selective catalyst reduction, diesel oxidation catalyst (DOC)

Face seals, O-ring

Fan, suction and guard

Fast reversing shuttle, all gears

Fenders, rear

Filters, bowl and cartridge: fuel, hydraulic fluid

Filters, spin-on: engine oil, transmission oil, water separator

Flashing hazards/signal lights

Floor mat

Four Wheel Drive/Brake Mode Selector

Fuel tank, fully enclosed

Fully hinged front grill for cooling package cleaning access

Ground level fuel fill and DEF fill

Guard, boom protection plate

Guards, stabilizer, rock

Hammer cup

High ambient cooling package

Hood lock, inside cab

Hydraulic hose, XT

Hydraulic oil cooler

Hydraulic oil level sight gauge

Hydraulic valves, backhoe six (6) function

Hydraulic valves, loader three (3) function

Hydraulics, load sensing with variable displacement piston pump and flow sharing valve

Indicator lights: hydraulic implement lockout, hydraulic filter bypass, water in fuel, operator presence, remote dial throttle active, air filter blocked, engine warning, machine locked (if equipped), warning lamp, emissions module malfunction, low battery/charging system warning, high hydraulic oil temperature; LCD warnings: engine oil pressure, service due, high coolant temperature, auto idle shutdown, high torque converter temperature

Instrument panel lights

Joystick controls: electrohydraulic controls with pattern changer valve

Key start/stop system

LCD operator screen

Lights, working (four [4] front, four [4] rear)

Loader joystick, self-leveling, return-to-dig, transmission disconnect switch, Forward/Neutral/Reverse Switch, MP Auxiliary roller

Loader, single tilt

Machine Security System integrated into LCD operator display

Mirror, rearview

One-touch low idle

Open circuit breather

Operations and Maintenance Manual

Pattern changer, in cab

Power receptacle, 12 volt, one (1) internal + one (1) USB, two (2) external

Product Link

Radio ready (Cab)

Ride Control

Rubber impact strips on radiator guards

Seat belt, retractable, 51 mm (2 in)

Seat mounted controls

Seat, air suspension with armrest

Stabilizer shoes, reversible

Stabilizers, electrohydraulic, auto-up function

Starting system, glow plugs

Steering knob

Steering, hydrostatic

Stop and tail lights

Storage compartment (Cab/Canopy), lockable

Storage tray, electronics and miscellaneous items

Swing transport lock

Throttle, hand and foot, electronic

Tilt steering wheel (Canopy), Tilt/telescoping (Cab)

Tire Valve Stem Protection


Torque converter

Transmission neutralizer switch

Transport tie-downs

Vandalism locks, four (4)

Vandalism protection, gauge cover (Canopy)

Warning horn, electric


Battery, additional, 1,000 CCA

Cab, deluxe with air conditioning

Cold weather fuel (–30° C/–22° F)

Cold weather package, including additional battery, engine block heater, radiator antifreeze, cold weather fuel (–30° C/–22° F) and mounting for an ether bottle

Fenders, front with integral steps

Guard, stabilizer, stab leg bottom

Hydraulic lines, combined function auxiliary

Hydraulic valves, loader quick coupler

Lights, LED work lights, wide and spot

Loader, Quick Coupler

Quick Coupler, backhoe, hydraulic, dual lock

Radio and CD player, Bluetooth®

Rotating beacon, magnetic mount

Seat belt, 75 mm (3 in)

Seat, heated

Stick, extendible

Work Tool Attachments such as buckets, flip over forks, hammers and vibratory plate compactors. See your Cat dealer for more information.



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