High Performance

Operate with ease. A powerful engine, electro-hydraulic pump and control valve, and high digging force help you get more work done every day.

Low Maintenance Costs

Long life filters for fuel, hydraulic oil, and air help lower your overall costs.

Designed for Daily Work

The 318 GC is easy to own and operate, providing the reliability and durability you expect from Cat® products.

318 GC Silhouette

Small Excavators 318 GC

Request A Price Find Dealer

Key Specs

Net Power - ISO 9249: 111 hp; 83.1 kW

Operating Weight: 38600 lb; 17500 kg

Maximum Digging Depth: 20 ft; 6110 mm

318 GC
Change model

Overview

High Performance with Low Maintenance Costs on the Jobsite

If you need reliability, durability, high productivity, and low cost, the Cat® 318 GC is made for you. This excavator is designed, built, and uniquely supported to help you get more work done every day and help put money back in your pocket.

Benefits

High Performance

Operate with ease. A powerful engine, electro-hydraulic pump and control valve, and high digging force help you get more work done every day.

Low Maintenance Costs

Long life filters for fuel, hydraulic oil, and air help lower your overall costs.

Designed for Daily Work

The 318 GC is easy to own and operate, providing the reliability and durability you expect from Cat® products.

Features At A Glance

The Cat® C3.6 engine meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
The main hydraulic pump is electronically controlled to help improve control and productivity.
Undercarriage and track design help balance performance and stability.
Boom, stick, and bucket linkage are enhanced to ensure maximum durability.
Reinforced bucket linkage pin allows for high digging force.

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area.
Build Number: 05A

Match the power to the job with three working modes: Smart for power automatically adjusted to demand, Eco for lowest fuel burn, and Power for highest productivity.
Hydraulic oil, fuel, and air filters have a long service life, and pilot and case drain filters are not needed to help keep costs low.
Most daily maintenance can be performed from ground level to help decrease the amount of time you spend on daily tasks.
The 318 GC has low hydraulic and engine oil refill capacities to help decrease the amount of time you spend on servicing.
Automatic Engine Speed Control helps reduce fuel consumption as it lowers engine speed when no operation is performed.
Cat Product Link™ comes standard so you can remotely monitor fuel consumption, machine health, location, and hours on demand through VisionLink®.

Start up the machine easily with the push-to-start button.
Operate the excavator comfortably with a 1-button joystick, and easy-to-reach and intuitive controls.
Easily move soft, wet, and sticky material with a new, optional shallow profile bucket.
Cat continues to improve user interface functionality for operators of all skill levels. The touchscreen monitor is an easy-to-use operating tool that presents the jobsite dashboard with an intuitive format. Productivity applications are displayed in grid-view to read on-the-go, and touchscreen navigation is programmed to make sure job performance continues without any hold ups.
Standard high-resolution 203 mm (8 in) touchscreen monitor features:

Continuously improved user interface allows for intuitive navigation, helping minimize performance interruption with the easy-to-use touchscreen menu.
Identify apps quickly with a grid list view, abbreviated app names, and categorized menu options.
The notification center keeps important information visible to the operator and displays messages without shrinking the camera view.
Color coded notifications set critical messages apart from the rest.
Use the in-monitor QR code to learn about machine features through a full suite of “how-to” videos.

Wide seat adjusts for operators of all sizes.
Standard automatic climate control keeps you at the right temperature all shift long.
Convenience features include a radio, headphone port, and a USB port for connecting and charging devices.
Cup holder and storage space forward of the controls can hold large cups and wide cell phones; storage behind the seat can hold a hard hat, large lunchbox, and other items.

Nearly all major mechanical components are accessed from the ground or the service platform.
Radiator screens can be removed easily, are simple to clean, and help keep the radiator free of small debris that can be difficult to remove, such as grass clippings.
The engine compartment is easily accessed from the service platform; fluid caps and gauges are easily reached, and an automatic tensioner helps ensure you will never need to make belt adjustments.
Cat technology helps you monitor your machine, and the Caterpillar service network helps you maximize uptime.

Emergency engine and electrical shut offs are at ground level.
Steps and platforms use anti-skid plates with countersunk bolts to help prevent slipping and tripping.
The operator can exit in an emergency through either the rear window or the steel top hatch.
The cab has large windows and small cab posts, to help provide excellent visibility into the trench and in every direction.
Bright exterior LED lights and an optional rearview camera help ensure you have total visibility on the jobsite.

The Cat® C3.6 engine meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
When engaged, one-touch idle helps operators conserve fuel and reduce greenhouse gas emissions by lowering engine speed when the machine is under no load and return to normal operating speed when desired.
Auto Engine Speed Control reduces fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working. Consult your Cat dealer or the machine's operation and maintenance manual for more information.

*For use of blends higher than 20% biodiesel, consult your Cat dealer.
**Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Specifications Standard Equipment Optional Equipment

Product Specifications for 318 GC

Engine

Net Power - ISO 9249	111 hp 83.1 kW
Engine Model	C3.6 C3.6
Net Power - ISO 9249 (DIN)	113 hp (metric) 113 hp (metric)
Engine Power - ISO 14396:2002	121 hp 90 kW
Engine Power - ISO 14396 (DIN)	122 hp (metric) 122 hp (metric)
Bore	4 in 98 mm
Stroke	5 in 120 mm
Displacement	220 in³ 3.6 l
Biodiesel Capability	Up to B20¹ Up to B20¹
Emissions	Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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 2,400 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 2,400 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. For use of blends higher than 20% biodiesel, consult your Cat dealer. Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels* up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. For use of blends higher than 20% biodiesel, consult your Cat dealer. *Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Hydraulic System

Main System - Maximum Flow	296 L/min (78 gal/min) 296 L/min (78 gal/min)
Maximum Pressure - Equipment	5076 psi 35000 kPa
Maximum Pressure - Travel	5076 psi 35000 kPa
Maximum Pressure - Swing	3452 psi 23800 kPa
Stick Cylinder - Bore	5 in 120 mm
Stick Cylinder - Stroke	47 in 1197 mm
Bucket Cylinder - Bore	4 in 100 mm
Boom Cylinder - Stroke	40 in 1015 mm
Boom Cylinder - Bore	4 in 105 mm
Bucket Cylinder - Stroke	37 in 939 mm

Swing Mechanism

Swing Speed	9.56 r/min 9.56 r/min
Maximum Swing Torque	33840 lbf·ft 46 kN·m

Weights

Operating Weight

38600 lb 17500 kg

Service Refill Capacities

Fuel Tank Capacity	75.3 gal (US) 285 l
Cooling System	2.9 gal (US) 11 l
Engine Oil	2.9 gal (US) 11 l
Final Drive - Each	0.8 gal (US) 3 l
Hydraulic System - Including Tank	50.2 gal (US) 190 l
Hydraulic Tank	24.8 gal (US) 94 l

Dimensions

Boom	Reach 5.1 m (16'9") Reach 5.1 m (16'9")
Stick	Reach 2.6 m (8'6") Reach 2.6 m (8'6")
Bucket	SD 0.91 m³ (1.19 yd³) SD 0.91 m³ (1.19 yd³)
Shipping Height - Top of Cab	9.9 ft 3030 mm
Handrail Height	9.6 ft 2930 mm
Shipping Length	28.6 ft 8730 mm
Tail Swing Radius	8.9 ft 2700 mm
Counterweight Clearance	3.4 ft 1030 mm
Ground Clearance	1.5 ft 460 mm
Track Length	13 ft 3970 mm
Length to Center of Rollers	10.4 ft 3170 mm
Track Gauge	6.5 ft 1990 mm
Transport Width	8.5 ft 2590 mm
Length - Center of Rollers	10 ft 3040 mm

Working Ranges & Forces

Maximum Digging Depth	20 ft 6110 mm
Boom	Reach 5.1 m (16'9") Reach 5.1 m (16'9")
Stick	Reach 2.6 m (8'6") Reach 2.6 m (8'6")
Bucket	SD 0.91 m³ (1.19 yd³) SD 0.91 m³ (1.19 yd³)
Maximum Reach at Ground Level	28.9 ft 8800 mm
Maximum Cutting Height	29.3 ft 8930 mm
Maximum Loading Height	20.6 ft 6270 mm
Minimum Loading Height	7.5 ft 2280 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	19.3 ft 5890 mm
Maximum Vertical Wall Digging Depth	16.6 ft 5070 mm
Bucket Digging Force - ISO	27650 lbf 123 kN
Stick Digging Force - ISO	17980 lbf 80 kN

Machine Weight

Operating Weight

31600 lb 14300 kg

318 GC Standard Equipment

CAB

Sound suppressed with viscous mounts

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

Mechanically adjustable seat with headrest

Auto bi-level air conditioner

Keyless push-to-start engine control

Floor-mounted adjustable consoles

1-button joystick

AM/FM radio with USB and auxiliary port

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Openable steel hatch

Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink®*

ELECTRICAL SYSTEM

750 CCA maintenance-free batteries (x2)

Electrical disconnect switch

LED left-side boom and chassis lights

Cat® C3.6 single turbo diesel engine

ENGINE

Three selectable modes: Power, Smart, Eco

46°C (115°F) high-ambient cooling capability

-18°C (0°F) cold start capability

Electric fuel priming pump

Two-stage fuel filtration system

Sealed double-element air filter with pre-cleaner

HYDRAULIC SYSTEM

Electronic main control valve

Single type electronic main pump

Boom and stick regeneration circuits

Automatic hydraulic oil warm up

Automatic two-speed travel

High performance hydraulic return filter

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Right-hand handrail and hand hold

Lockable external tool/storage box

Lockable disconnect switch

Ground-level engine shutoff switch

Signaling/warning horn

Hydraulic lockout lever

Travel alarm

SERVICE AND MAINTENANCE

Grouped location of filters

Radiator screen

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

Long undercarriage

Grease lubricated track links

Bottom guards

Travel motor guards

Swivel guard

3250 kg (7,165 lb) counterweight

Tie-down points

NOTE

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

* Connect subscription only. Additional subscriptions are available. Contact your Cat dealer for availability

318 GC Optional Equipment

NOTE

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

BOOM AND STICKS

5.1 m (16'9") Reach boom

5.1 m (16'9") HD Reach boom

2.6 m (8'6") Reach stick

2.6 m (8'6") HD Reach stick

2.9 m (9'6") Reach stick

CAB

Operator Protective Guards (OPG)

1 slider joystick

ELECTRICAL SYSTEM

LED right-side boom light

LED cab light

HYDRAULIC SYSTEM

Hammer lines

Hammer floor pedal kit

SAFETY AND SECURITY

Rearview camera

UNDERCARRIAGE AND STRUCTURES

600 mm (24") double grouser track shoes

600 mm (24") triple grouser track shoes

700 mm (28") triple grouser track shoes

Product Specifications for 318 GC

Download Print

Engine

Net Power - ISO 9249	111 hp 83.1 kW
Engine Model	C3.6 C3.6
Net Power - ISO 9249 (DIN)	113 hp (metric) 113 hp (metric)
Engine Power - ISO 14396:2002	121 hp 90 kW
Engine Power - ISO 14396 (DIN)	122 hp (metric) 122 hp (metric)
Bore	4 in 98 mm
Stroke	5 in 120 mm
Displacement	220 in³ 3.6 l
Biodiesel Capability	Up to B20¹ Up to B20¹
Emissions	Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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 2,400 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 2,400 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. For use of blends higher than 20% biodiesel, consult your Cat dealer. Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels* up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. For use of blends higher than 20% biodiesel, consult your Cat dealer. *Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Hydraulic System

Main System - Maximum Flow	296 L/min (78 gal/min) 296 L/min (78 gal/min)
Maximum Pressure - Equipment	5076 psi 35000 kPa
Maximum Pressure - Travel	5076 psi 35000 kPa
Maximum Pressure - Swing	3452 psi 23800 kPa
Stick Cylinder - Bore	5 in 120 mm
Stick Cylinder - Stroke	47 in 1197 mm
Bucket Cylinder - Bore	4 in 100 mm
Boom Cylinder - Stroke	40 in 1015 mm
Boom Cylinder - Bore	4 in 105 mm
Bucket Cylinder - Stroke	37 in 939 mm

Swing Mechanism

Swing Speed	9.56 r/min 9.56 r/min
Maximum Swing Torque	33840 lbf·ft 46 kN·m

Weights

Operating Weight

38600 lb 17500 kg

Service Refill Capacities

Fuel Tank Capacity	75.3 gal (US) 285 l
Cooling System	2.9 gal (US) 11 l
Engine Oil	2.9 gal (US) 11 l
Final Drive - Each	0.8 gal (US) 3 l
Hydraulic System - Including Tank	50.2 gal (US) 190 l
Hydraulic Tank	24.8 gal (US) 94 l

Dimensions

Boom	Reach 5.1 m (16'9") Reach 5.1 m (16'9")
Stick	Reach 2.6 m (8'6") Reach 2.6 m (8'6")
Bucket	SD 0.91 m³ (1.19 yd³) SD 0.91 m³ (1.19 yd³)
Shipping Height - Top of Cab	9.9 ft 3030 mm
Handrail Height	9.6 ft 2930 mm
Shipping Length	28.6 ft 8730 mm
Tail Swing Radius	8.9 ft 2700 mm
Counterweight Clearance	3.4 ft 1030 mm
Ground Clearance	1.5 ft 460 mm
Track Length	13 ft 3970 mm
Length to Center of Rollers	10.4 ft 3170 mm
Track Gauge	6.5 ft 1990 mm
Transport Width	8.5 ft 2590 mm
Length - Center of Rollers	10 ft 3040 mm

Working Ranges & Forces

Maximum Digging Depth	20 ft 6110 mm
Boom	Reach 5.1 m (16'9") Reach 5.1 m (16'9")
Stick	Reach 2.6 m (8'6") Reach 2.6 m (8'6")
Bucket	SD 0.91 m³ (1.19 yd³) SD 0.91 m³ (1.19 yd³)
Maximum Reach at Ground Level	28.9 ft 8800 mm
Maximum Cutting Height	29.3 ft 8930 mm
Maximum Loading Height	20.6 ft 6270 mm
Minimum Loading Height	7.5 ft 2280 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	19.3 ft 5890 mm
Maximum Vertical Wall Digging Depth	16.6 ft 5070 mm
Bucket Digging Force - ISO	27650 lbf 123 kN
Stick Digging Force - ISO	17980 lbf 80 kN

Machine Weight

Operating Weight

31600 lb 14300 kg

318 GC Standard Equipment

Print

CAB

Sound suppressed with viscous mounts

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

Mechanically adjustable seat with headrest

Auto bi-level air conditioner

Keyless push-to-start engine control

Floor-mounted adjustable consoles

1-button joystick

AM/FM radio with USB and auxiliary port

24V DC outlet

Cup holder and storage compartments

70/30 tempered glass windshield

Openable steel hatch

Dome light

Washable floor mat

CAT TECHNOLOGY

VisionLink®*

ELECTRICAL SYSTEM

750 CCA maintenance-free batteries (x2)

Electrical disconnect switch

LED left-side boom and chassis lights

Cat® C3.6 single turbo diesel engine

ENGINE

Three selectable modes: Power, Smart, Eco

46°C (115°F) high-ambient cooling capability

-18°C (0°F) cold start capability

Electric fuel priming pump

Two-stage fuel filtration system

Sealed double-element air filter with pre-cleaner

HYDRAULIC SYSTEM

Electronic main control valve

Single type electronic main pump

Boom and stick regeneration circuits

Automatic hydraulic oil warm up

Automatic two-speed travel

High performance hydraulic return filter

SAFETY AND SECURITY

Anti-skid plating with countersunk bolts

Right-hand handrail and hand hold

Lockable external tool/storage box

Lockable disconnect switch

Ground-level engine shutoff switch

Signaling/warning horn

Hydraulic lockout lever

Travel alarm

SERVICE AND MAINTENANCE

Grouped location of filters

Radiator screen

Scheduled Oil Sampling (S·O·S℠) ports

UNDERCARRIAGE AND STRUCTURES

Long undercarriage

Grease lubricated track links

Bottom guards

Travel motor guards

Swivel guard

3250 kg (7,165 lb) counterweight

Tie-down points

NOTE

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

* Connect subscription only. Additional subscriptions are available. Contact your Cat dealer for availability

318 GC Optional Equipment

Print

NOTE

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

BOOM AND STICKS

5.1 m (16'9") Reach boom

5.1 m (16'9") HD Reach boom

2.6 m (8'6") Reach stick

2.6 m (8'6") HD Reach stick

2.9 m (9'6") Reach stick

CAB

Operator Protective Guards (OPG)

1 slider joystick

ELECTRICAL SYSTEM

LED right-side boom light

LED cab light

HYDRAULIC SYSTEM

Hammer lines

Hammer floor pedal kit

SAFETY AND SECURITY

Rearview camera

UNDERCARRIAGE AND STRUCTURES

600 mm (24") double grouser track shoes

600 mm (24") triple grouser track shoes

700 mm (28") triple grouser track shoes

See how 318 GC compares against frequently compared products.

Excavators

Selected

318 GC

318 GC

Net Power - ISO 9249: 111 hp; 83.1 kW
Operating Weight: 38600 lb; 17500 kg
Maximum Digging Depth: 20 ft; 6110 mm

Excavators

316 GC

316 GC

Net Power - ISO 9249: 104 hp; 77.3 kW
Operating Weight: 32200 lb; 14600 kg
Maximum Digging Depth: 18.1 ft; 5530 mm

View Details

Excavators

313 GC - Tier 4 / Stage V

313 GC - Tier 4 / Stage V

Net Power - ISO 9249: 73 hp; 54.3 kW
Operating Weight: 30400 lb; 13800 kg
Maximum Digging Depth: 19.8 ft; 6040 mm

View Details

Tools And Expert Help At Every Turn

Find Dealer

Payment Calculator

Payment Calculator

Current Offers

Rental Options

Used Options

Product Brochures and More Are Ready to Download!

Caterpillar product brochures and other informational documents are available for your growing business.

318 GC Hydraulic Excavator - Technical Specifications (S Am) Downloadable PDF Opens in a New Tab

Media Gallery

Photos

360 View

318 GC Silhouette

318 GC Silhouette

318 GC Silhouette