Used CAT D7G Crawler Bulldozer for Sale

The used CAT D7G bulldozer is a proven heavy earthmoving machine for construction, mining, road building, land development, and site preparation. It combines strong diesel power with a durable crawler chassis and a large hydraulic blade.

This unit is also fitted with a rear ripper. Therefore, it can handle both pushing and ground-breaking work. Contractors can use one machine to move soil, level a site, open hard ground, and prepare surfaces for later construction.

For buyers seeking a reliable second-hand crawler dozer, the D7G remains a practical choice because of its simple mechanical design, strong frame, and widely recognized Caterpillar powertrain.

Main Features

The CAT D7G is designed for demanding earthmoving work while keeping operation and maintenance straightforward.

• Cat 3306 turbocharged diesel engine
• Approx. 149 kW / 200 hp net power
• Heavy-duty crawler undercarriage
• Three-speed planetary powershift transmission
• Hydraulic front blade control
• Large blade for bulk earthmoving
• Rear ripper installed on the photographed unit
• Enclosed operator cab
• Single-grouser track shoes
• Strong final-drive and track structure
• Suitable for long working shifts
• Easy access to major service areas

Its powertrain uses a torque converter and torque divider system. As a result, the machine can maintain useful pushing force when the load on the blade changes.

Reference Specifications

The following figures are reference specifications for the Caterpillar D7G. Exact data for an individual used unit can vary according to year, blade, track shoe, cab, ripper, and other equipment.

Model: Caterpillar D7G
Machine Type: Crawler Bulldozer / Track-Type Tractor
Engine Model: Cat 3306
Engine Type: 6-Cylinder Turbocharged Diesel
Engine Displacement: 10.5 L
Net Power: 149 kW / 200 hp
Gross Power: 165 kW / 215 hp
Rated Speed: 2,000 rpm
Transmission: 3-Speed Planetary Powershift
Forward Gears: 3
Reverse Gears: 3
Standard Track Shoe Width: Approx. 508 mm
Track Shoes per Side: 38
Track Rollers per Side: 6
Track on Ground: Approx. 2,720 mm
Fuel Tank: Approx. 435 L
Reference Operating Weight: Approx. 20,600 kg with standard 7S blade configuration
7S Blade Capacity: Approx. 4.2 m³
7S Blade Width: Approx. 3,660 mm
7S Blade Height: Approx. 1,270 mm
Maximum Digging Depth: Approx. 447 mm
Rear Attachment: Ripper available; photographed machine is equipped with a multi-shank ripper

Caterpillar’s historical specification lists a 4.2 m³ 7S blade and 2.9 m³ 7A blade. It also lists an approximate operating weight of 20,600 kg for a 7S-blade configuration, while rear ripper equipment adds further weight.

200 HP Cat 3306 Diesel Engine

The Cat 3306 is one of the main reasons many buyers continue to look for used D7G bulldozers.

This six-cylinder turbocharged diesel engine delivers approximately 200 hp net power. More importantly, it provides the low-speed torque needed for pushing dense soil and working under heavy loads.

The engine uses a relatively simple mechanical design. Therefore, maintenance teams familiar with traditional construction machinery can inspect and service the powertrain without relying on complex electronic systems.

Heavy-Duty Powershift Drivetrain

The D7G uses a three-speed planetary powershift transmission. Reference travel speeds reach about 10 km/h in third forward and 11.9 km/h in third reverse.

This arrangement suits repeated dozing cycles. The operator can push material forward, reverse, reposition the blade, and begin another pass with minimal delay.

In addition, the crawler drive provides strong traction on loose earth, gravel, compacted soil, and rough construction ground.

Large Blade for High-Volume Dozing

The wide front blade allows the D7G to push a large amount of material in each pass.

A reference 7S straight blade offers about 4.2 m³ capacity and 3,660 mm width. The hydraulic system allows the operator to raise, lower, float, and tilt the blade according to site conditions.

This makes the machine suitable for short-distance bulk pushing, rough grading, site leveling, and fill spreading.

Rear Ripper for Hard Ground

The machine in the photos includes a rear multi-shank ripper.

This attachment expands the machine's working range. Before pushing, the operator can use the ripper to loosen compacted soil, hard clay, weathered ground, and other difficult material.

Therefore, contractors can reduce the need for a separate machine during many site-preparation jobs.

Typical Applications

The used CAT D7G can work across many heavy equipment projects, including road construction, mining support, quarry preparation, land clearing, earthmoving, site leveling, industrial development, landfill work, foundation preparation, dam construction, agricultural land development, and large-scale infrastructure projects.

The combination of blade, crawler tracks, and rear ripper makes it especially useful on projects where both cutting and pushing are required.

Used Equipment Inspection

Before export, a used bulldozer should be checked carefully. Our inspection process can cover the engine, transmission, hydraulic system, blade cylinders, steering system, final drives, track chains, rollers, sprockets, idlers, ripper, cab, electrical system, and main frame.

Buyers can also request detailed machine photos, working videos, serial information, engine condition details, and loading information before shipment.

Because each used CAT D7G has a different service history, the actual year, operating hours, attachments, paint condition, and component wear should always be confirmed for the specific machine.

Why Choose a Used CAT D7G?

A used D7G can provide a lower purchase cost than a new large crawler dozer while still offering the power needed for demanding projects.

Its 200 hp engine, strong undercarriage, large blade, and available ripper make it useful for fleet operators, contractors, equipment dealers, and rental companies.

Moreover, the relatively simple mechanical systems make the machine attractive in markets where easy maintenance and parts availability are important purchasing factors.

FAQ

What engine does the CAT D7G use?
The D7G reference specification uses a Cat 3306 six-cylinder turbocharged diesel engine with approximately 149 kW / 200 hp net output.

What is the operating weight of a CAT D7G?
A reference D7G configuration with 7S blade is about 20.6 tonnes. However, actual weight changes with the cab, blade, track shoes, ripper, and other equipment.

What is the blade capacity?
The 7S blade has a reference capacity of about 4.2 m³. A 7A blade configuration is rated at approximately 2.9 m³.

Does this used D7G have a ripper?
Yes. The machine shown in the supplied photos is equipped with a rear multi-shank ripper.

Is the CAT D7G suitable for mining?
Yes. Its crawler chassis, strong blade, diesel power, and ripper configuration make it suitable for mining support, quarry work, earthmoving, and heavy site preparation.

Can the machine be inspected before shipment?
Yes. Buyers can request condition photos, operating videos, component checks, and available machine information before confirming an order.