With our huge inventory of new, used and rental equipment, WesTrac has the right machine for the job.
With our huge inventory of new, used and rental equipment, WesTrac has the right machine for the job.
Keep your operation working around the clock by making WesTrac your partner in parts. With over 75,000 product lines stocked in our warehouses, ready-to-go, we won't let you down.
The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.
The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to give you a durable, low-cost-per-hour excavator for light- to medium-duty applications.
Net Power - ISO 9249 | 107 kW | 143 hp |
Net Power - ISO 9249 (DIN) | 145 hp (metric) | 145 hp (metric) |
Engine Model | Cat C4.4 | Cat C4.4 |
Engine Power - ISO 14396 | 108 kW | 145 hp |
Engine Power - ISO 14396 (DIN) | 147 hp (metric) | 147 hp (metric) |
Bore | 105 mm | 4 in |
Stroke | 127 mm | 5 in |
Displacement | 4.4 l | 269 in³ |
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 2,000 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 2,000 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 | 429 l/min (113 gal/min) | 429 l/min (113 gal/min) |
Maximum Pressure - Equipment | 35000 kPa | 5075 psi |
Maximum Pressure - Travel | 34300 kPa | 4974 psi |
Maximum Pressure - Swing | 25000 kPa | 3625 psi |
Swing Mechanism
Swing Speed | 11.3 r/min | 11.3 r/min |
Maximum Swing Torque | 74.4 kN·m | 54900 lb/ft |
Weights
Operating Weight | 20400 kg | 45000 lb |
Note | Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight. | Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight. |
Service Refill Capacities
Fuel Tank Capacity | 345 l | 86.6 gal (US) |
Cooling System | 25 l | 6.6 gal (US) |
Engine Oil | 15 l | 4 gal (US) |
Swing Drive - Each | 12 l | 3.2 gal (US) |
Final Drive - Each | 4 l | 1.1 gal (US) |
Hydraulic System - Including Tank | 234 l | 61.8 gal (US) |
Hydraulic Tank | 115 l | 30.4 gal (US) |
Dimensions
Boom | Reach 5.7 m (18'8") | Reach 5.7 m (18'8") |
Stick | Reach 2.9 m (9'6") | Reach 2.9 m (9'6") |
Bucket | 1.0 m³ (1.31 yd³) | 1.0 m³ (1.31 yd³) |
Shipping Height - Top of Cab | 2960 mm | 9.9 ft |
Handrail Height | 2950 mm | 9.8 ft |
Shipping Length | 9530 mm | 31.3 ft |
Tail Swing Radius | 2830 mm | 9.3 ft |
Counterweight Clearance | 1050 mm | 3.4 ft |
Ground Clearance | 470 mm | 1.5 ft |
Track Length | 4250 mm | 13.9 ft |
Length to Center of Rollers | 3450 mm | 11.3 ft |
Track Gauge | 2380 mm | 7.8 ft |
Transport Width | 2980 mm | 9.8 ft |
Working Ranges & Forces
Maximum Digging Depth | 6630 mm | 21.8 ft |
Boom | Reach 5.7 m (18'8") | Reach 5.7 m (18'8") |
Stick | Reach 2.9 m (9'6") | Reach 2.9 m (9'6") |
Bucket | 1.0 m³ (1.31 yd³) | 1.0 m³ (1.31 yd³) |
Maximum Reach at Ground Level | 9770 mm | 32.1 ft |
Maximum Cutting Height | 9440 mm | 31 ft |
Maximum Loading Height | 6580 mm | 21.6 ft |
Minimum Loading Height | 2260 mm | 7.4 ft |
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom | 6460 mm | 21.2 ft |
Maximum Vertical Wall Digging Depth | 6010 mm | 19.7 ft |
Bucket Digging Force - ISO | 129 kN | 29007 lbf |
Stick Digging Force - ISO | 99 kN | 22301 lbf |
NOTE
Standard and optional equipment may vary. Consult your Cat dealer for details. |
BOOM AND STICKS
5.7 m (18'8") Reach boom |
CAB
Rollover protective structure (ROPS) |
Mechanical-suspension seat |
High-resolution 203 mm (8 in) LCD touchscreen monitor |
CAT TECHNOLOGY
VisionLink® |
Remote Flash |
ELECTRICAL SYSTEM
Two 1,000 CCA maintenance-free batteries |
Programmable time-delay LED working lights |
LED chassis light, left-hand boom lights |
ENGINE
Cat C4.4 single turbo diesel engine |
Two selectable power modes |
Auto engine speed control |
Auto engine idle shutdown |
52°C (125°F) high-ambient cooling capacity |
-32°C (-25°F) cold start capability |
Double element air filter with integrated precleaner |
Reversing electric cooling fans |
HYDRAULIC SYSTEM
Boom and stick regeneration circuits |
Auto two-speed travel |
Boom and stick drift reduction valve |
Three button joysticks |
SAFETY AND SECURITY
Auto hammer stop |
Rearview camera |
Right-hand mirror |
Ground-level engine shutoff switch |
Lockable disconnect switch |
Right-hand handrail and hand hold |
Signaling/warning horn |
SERVICE AND MAINTENANCE
Scheduled Oil Sampling (S·O·S℠) ports |
Ground- and platform-level engine oil dipsticks |
Integrated vehicle health management system |
UNDERCARRIAGE AND STRUCTURES
600 mm (24") triple grouser shoes |
Tie-down points on base frame |
3700 kg (8,150 lb) counterweight |
4200 kg (9,260 lb) counterweight (Australia, New Zealand only) |
NOTE
Standard and optional equipment may vary. Consult your Cat dealer for details. |
The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to give you a durable, low-cost-per-hour excavator for light- to medium-duty applications.
Net Power - ISO 9249 | 107 kW | 143 hp |
Net Power - ISO 9249 (DIN) | 145 hp (metric) | 145 hp (metric) |
Engine Model | Cat C4.4 | Cat C4.4 |
Engine Power - ISO 14396 | 108 kW | 145 hp |
Engine Power - ISO 14396 (DIN) | 147 hp (metric) | 147 hp (metric) |
Bore | 105 mm | 4 in |
Stroke | 127 mm | 5 in |
Displacement | 4.4 l | 269 in³ |
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 2,000 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 2,000 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 | 429 l/min (113 gal/min) | 429 l/min (113 gal/min) |
Maximum Pressure - Equipment | 35000 kPa | 5075 psi |
Maximum Pressure - Travel | 34300 kPa | 4974 psi |
Maximum Pressure - Swing | 25000 kPa | 3625 psi |
Swing Mechanism
Swing Speed | 11.3 r/min | 11.3 r/min |
Maximum Swing Torque | 74.4 kN·m | 54900 lb/ft |
Weights
Operating Weight | 20400 kg | 45000 lb |
Note | Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight. | Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight. |
Service Refill Capacities
Fuel Tank Capacity | 345 l | 86.6 gal (US) |
Cooling System | 25 l | 6.6 gal (US) |
Engine Oil | 15 l | 4 gal (US) |
Swing Drive - Each | 12 l | 3.2 gal (US) |
Final Drive - Each | 4 l | 1.1 gal (US) |
Hydraulic System - Including Tank | 234 l | 61.8 gal (US) |
Hydraulic Tank | 115 l | 30.4 gal (US) |
Dimensions
Boom | Reach 5.7 m (18'8") | Reach 5.7 m (18'8") |
Stick | Reach 2.9 m (9'6") | Reach 2.9 m (9'6") |
Bucket | 1.0 m³ (1.31 yd³) | 1.0 m³ (1.31 yd³) |
Shipping Height - Top of Cab | 2960 mm | 9.9 ft |
Handrail Height | 2950 mm | 9.8 ft |
Shipping Length | 9530 mm | 31.3 ft |
Tail Swing Radius | 2830 mm | 9.3 ft |
Counterweight Clearance | 1050 mm | 3.4 ft |
Ground Clearance | 470 mm | 1.5 ft |
Track Length | 4250 mm | 13.9 ft |
Length to Center of Rollers | 3450 mm | 11.3 ft |
Track Gauge | 2380 mm | 7.8 ft |
Transport Width | 2980 mm | 9.8 ft |
Working Ranges & Forces
Maximum Digging Depth | 6630 mm | 21.8 ft |
Boom | Reach 5.7 m (18'8") | Reach 5.7 m (18'8") |
Stick | Reach 2.9 m (9'6") | Reach 2.9 m (9'6") |
Bucket | 1.0 m³ (1.31 yd³) | 1.0 m³ (1.31 yd³) |
Maximum Reach at Ground Level | 9770 mm | 32.1 ft |
Maximum Cutting Height | 9440 mm | 31 ft |
Maximum Loading Height | 6580 mm | 21.6 ft |
Minimum Loading Height | 2260 mm | 7.4 ft |
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom | 6460 mm | 21.2 ft |
Maximum Vertical Wall Digging Depth | 6010 mm | 19.7 ft |
Bucket Digging Force - ISO | 129 kN | 29007 lbf |
Stick Digging Force - ISO | 99 kN | 22301 lbf |
NOTE
Standard and optional equipment may vary. Consult your Cat dealer for details. |
BOOM AND STICKS
5.7 m (18'8") Reach boom |
CAB
Rollover protective structure (ROPS) |
Mechanical-suspension seat |
High-resolution 203 mm (8 in) LCD touchscreen monitor |
CAT TECHNOLOGY
VisionLink® |
Remote Flash |
ELECTRICAL SYSTEM
Two 1,000 CCA maintenance-free batteries |
Programmable time-delay LED working lights |
LED chassis light, left-hand boom lights |
ENGINE
Cat C4.4 single turbo diesel engine |
Two selectable power modes |
Auto engine speed control |
Auto engine idle shutdown |
52°C (125°F) high-ambient cooling capacity |
-32°C (-25°F) cold start capability |
Double element air filter with integrated precleaner |
Reversing electric cooling fans |
HYDRAULIC SYSTEM
Boom and stick regeneration circuits |
Auto two-speed travel |
Boom and stick drift reduction valve |
Three button joysticks |
SAFETY AND SECURITY
Auto hammer stop |
Rearview camera |
Right-hand mirror |
Ground-level engine shutoff switch |
Lockable disconnect switch |
Right-hand handrail and hand hold |
Signaling/warning horn |
SERVICE AND MAINTENANCE
Scheduled Oil Sampling (S·O·S℠) ports |
Ground- and platform-level engine oil dipsticks |
Integrated vehicle health management system |
UNDERCARRIAGE AND STRUCTURES
600 mm (24") triple grouser shoes |
Tie-down points on base frame |
3700 kg (8,150 lb) counterweight |
4200 kg (9,260 lb) counterweight (Australia, New Zealand only) |
NOTE
Standard and optional equipment may vary. Consult your Cat dealer for details. |