Knowing the CAT 320 specs clearly is essential for sourcing the correct replacement parts for your Caterpillar 320 Excavator. This guide walks you through the detailed CAT 320 specs and offers quality replacement parts for your Caterpillar 320 excavator.
What Is CAT 320?
The CAT 320 excavator has been one of the most popular medium-sized crawler excavators for years. It is highly sought-after both as a new machine and on the second-hand market. Caterpillar mainly uses the 320 as an all-rounder. It is big and powerful enough for heavier work like earthmoving, digging deep trenches, and loading large trucks, yet compact and versatile enough for general construction and utility work. In short, the CAT 320 is famous because it offers the perfect balance of power, stability, and productivity for almost any job site. The model name has also been used across several official generations. That makes the 320 not only a well-known machine, but also a highly searched-for used construction machine on the second-hand market.
Detailed CAT 320 Specs
Engine
| Engine Model | C7.1 |
|---|---|
| Net Power | ISO 9249 -117 kW 157 hp; ISO 9249 (DIN) 159 hp (metric) |
| Engine Power | ISO 14396 118 kW 158 hp; ISO 14396 (DIN) 160 hp (metric) |
| Bore | 105 mm 4 in |
| Stroke | 135 mm 5 in |
| Displacement | 7.01 L 428 in3 |
| Biodiesel Capability | Up to B20(1) |
Hydraulic System
| Main System – Maximum Flow –Implement | 429 L/min (215 ×2 pumps);113 gal/min (57 ×2 pumps) |
|---|---|
| Maximum Pressure – Equipment –Normal | 35 000 kPa 5,075 psi |
| Maximum Pressure – Equipment –Heavy Lift Mode/Auto Dig Boost | 38 000 kPa 5,510 psi |
| Maximum Pressure – Travel | 34 300 kPa 4,974 psi |
| Maximum Pressure – Swing | 27 500 kPa 3,998 psi |
| Boom Cylinder – Bore | 120 mm 5 in |
| Boom Cylinder – Stroke | 1260 mm 50 in |
| Stick Cylinder – Bore | 140 mm 6 in |
| Stick Cylinder – Stroke | 1504 mm 59 in |
| Bucket Cylinder – Bore | 120 mm 5 in |
| Bucket Cylinder – Stroke | 1104 mm 43 in |
Swing Mechanism, Track & Drive
| Swing Speed | 11.3 rpm |
|---|---|
| Maximum Swing Torque | 82 kN·m 60,300 lbf-ft |
| Standard Track Shoe Width | 790 mm 31 in |
| Optional Track Shoe Width | 600 mm 24 in |
| Number of Shoes (each side) | 49 |
| Number of Track Rollers (each side) | 8 |
| Number of Carrier Rollers (each side) | 2 |
| Gradeability | 35°/70% |
| Maximum Travel Speed | 5.7 km/h 3.5 mph |
| Maximum Drawbar Pull | 205 kN 45,996 lbf |
Service Refill Capacities
| Fuel Tank Capacity | 345 L 86.6 gal |
|---|---|
| Cooling System | 25 L 6.6 gal |
| Engine Oil | 25 L 6.6 gal |
| Swing Drive | 6 L 1.6 gal |
| Final Drive (each) | 5 L 1.3 gal |
| Hydraulic System (including tank) | 234 L 61.8 gal |
| Hydraulic Tank | 115 L 30.4 gal |
How Much Does A CAT 320 Weigh?
The operating weight of a Caterpillar 320 varies depending on its specific configuration. For a standard heavy-duty setup, it weighs approximately 22,000 kg (48,500 lbs).
This specific operating weight is based on the following configuration:
- Boom: Heavy Duty (HD) Reach boom
- Stick: HD R2.9 (9’6″) stick
- Bucket: 1.19 m³ (1.56 yd³) Heavy Duty (HD) bucket
- Shoes: 790 mm (31″) triple grouser track shoes
- Counterweight: 3.7 metric ton (8,200 lbs) counterweight
*Note: The actual weight may fluctuate slightly if you equip the machine with different stick lengths, bucket capacities, or track shoe widths.
See Related: How Much Does a Mini Excavator Weigh?
Key Maintenance Points for CAT 320 Excavator
Regular inspections are essential for maintaining your CAT 320 excavator. It’s crucial to conduct a thorough check of the excavator components. Here are key maintenance points before each use:
Hydraulic Systems
- Check for leaks
- Inspect tracks and hydraulic lines
Tires
- Check air pressure
- Inspect for cracks or uneven wear
Tracks
- Check for damage or wear
- Ensure bolts are tight
See Related: Excavator Maintenance: Is Your Excavator Ready for the Summer Heat?
Replacement Parts for CAT 320 Excavator
High-quality replacement excavator parts safeguard your Caterpillar 320, ensuring durability and reliable performance on the harshest work sites. Here we’ll present some of the quality excavator replacement parts from FridayParts that are compatible with your CAT 320 excavator.
| Part Names | Replacement Parts Numbers | Part Names | Replacement Parts Numbers |
|---|---|---|---|
| Radiator | 7Y-1961, 7Y1961, CA7Y-1961 | Relief Valve | / |
| Hydraulic Oil Cooler | CA1189954, 118-9954 | Track Roller Bottom Roller | 117-5046,1175046 |
| Air Filter | CA131-8821, CA131-8822 | Side Door Lock Hydraulic Pump Door Lock | / |
| Hydraulic Pump | 114-0602, 1140602, CA1140602 | Idler | 9W-9444 |
| Hydraulic Filter | 4I-3948 | Adjuster Seal Kit | 102-8109, CA1028109, 1028109 |
| Tension Cylinder Assembly | 7Y-1744 | Pusher Pilot Valve Plunger Kit | / |
| Oil Level Sensor | 130677, 1114760, 34390-12300 | Travel Motor shaft(Pump shaft) | / |
| Swing Motor Second Class Frame Assembly | / | Engine Fan Blade Cooling | 5I-8000, 5I8000, CA5I8000 |
FAQs
How does the CAT 320 breakout force compare to other 20-ton models?
The CAT 320 features a bucket digging force of approximately 150 kN, providing superior performance in mass excavation and heavy soil handling.
What is the fuel tank capacity for long-shift operations?
Most CAT 320 models feature a 345-liter (91.1gallon) fuel tank, allowing for full 10-to-12-hour shifts without the need for on-site refilling.
How often should you check the hydraulic system for leaks?
Check the hydraulic system weekly for leaks in hoses, valves and cylinders. This helps save money and keep the machine working well.
What is the best way to maintain the Cat 320’s tracks?
Clean the tracks daily to remove dirt and mud. Inspect them weekly for damage or wear. Adjust track tension often using the grease system to prevent premature wear.
How do you know when to replace the bucket teeth?
Replace bucket teeth when they look dull or worn out. Worn teeth make digging harder and stress the hydraulic system. Check them after every 50 hours of use.
Conclusion
Understanding the CAT 320 specs and parts helps you find the correct replacement parts better. Regular maintenance and quality CAT replacement parts make your excavator last longer. No matter whether you need the parts for maintenance or an upgrade, FridayParts can have you covered with our vast selection of top-notch excavator parts. Explore now and keep your CAT running at its optimal performance.
