The Caterpillar 320D L is a hydraulic excavator in Caterpillar's 20-ton class, designed for general earthmoving, trenching, site preparation, and material handling. It features a long undercarriage for improved stability and reduced ground pressure, making it suitable for soft ground and demanding jobsite conditions. The 320D L is commonly equipped with a Caterpillar diesel engine, hydraulic system optimized for digging performance, and a spacious operator cab with controls for precision operation. It is used in construction, utility work, road building, and quarry support applications. The model is part of Caterpillar's D Series excavator lineup.
Boom/Stick Excavator Option 1
Caterpillar 320D L Excavator Boom/Stick Excavator Option 1 specifications
Max Cutting Height
32.60 ft (9.94 m)
Max Digging Depth
25.20 ft (7.68 m)
Max Loading Height
22.80 ft (6.95 m)
Max Reach Along Ground
35.40 ft (10.79 m)
Max Vertical Wall Digging Depth
22.90 ft (6.98 m)
Shipping Height of Unit
12.30 ft (3.75 m)
Shipping Length of Unit
31.00 ft (9.45 m)
Boom/Stick Excavator Option 2
Caterpillar 320D L Excavator Boom/Stick Excavator Option 2 specifications
Max Cutting Height
31.20 ft (9.51 m)
Max Digging Depth
22.10 ft (6.74 m)
Max Loading Height
21.40 ft (6.52 m)
Max Reach Along Ground
32.40 ft (9.88 m)
Max Vertical Wall Digging Depth
20.00 ft (6.10 m)
Shipping Height of Unit
10.00 ft (3.05 m)
Shipping Length of Unit
31.00 ft (9.45 m)
Boom/Stick Excavator Option 3
Caterpillar 320D L Excavator Boom/Stick Excavator Option 3 specifications
Max Cutting Height
30.50 ft (9.30 m)
Max Digging Depth
20.70 ft (6.31 m)
Max Loading Height
20.70 ft (6.31 m)
Max Reach Along Ground
31.00 ft (9.45 m)
Max Vertical Wall Digging Depth
18.50 ft (5.64 m)
Shipping Length of Unit
31.00 ft (9.45 m)
Boom/Stick Excavator Option 4
Caterpillar 320D L Excavator Boom/Stick Excavator Option 4 specifications
Max Cutting Height
29.40 ft (8.96 m)
Max Digging Depth
19.40 ft (5.91 m)
Max Loading Height
18.80 ft (5.73 m)
Max Reach Along Ground
29.50 ft (8.99 m)
Max Vertical Wall Dig Depth
17.60 ft (5.36 m)
Shipping Length of Unit
29.70 ft (9.05 m)
Boom/Stick Excavator Option 5
Caterpillar 320D L Excavator Boom/Stick Excavator Option 5 specifications
Max Cutting Height
31.00 ft (9.45 m)
Max Digging Depth
21.50 ft (6.55 m)
Max Loading Height
19.80 ft (6.04 m)
Max Reach Along Ground
32.00 ft (9.75 m)
Max Vertical Wall Dig Depth
16.40 ft (5.00 m)
Shipping Height of Unit
10.50 ft (3.20 m)
Shipping Length of Unit
41.60 ft (12.68 m)
Bucket
Caterpillar 320D L Excavator Bucket specifications
Maximum Bucket Capacity
1.60 cu yd (1.22 cu m)
Minimum Bucket Capacity
0.60 cu yd (0.46 cu m)
Reference Bucket Capacity
1.40 cu yd (1.07 cu m)
Dimensions
Caterpillar 320D L Excavator Dimensions specifications
Counterweight Clearance
3.40 ft (1.04 m)
Ground Clearance
1.50 ft (0.46 m)
Height - Top of Cab
9.70 ft (2.96 m)
Length of Track on Ground
10.80 ft (3.29 m)
Removal Counterweight Clearance
3.40 ft (1.04 m)
Shipping Height
11.30 ft (3.44 m)
Shipping Length
31.00 ft (9.45 m)
Tail Swing Radius
9.00 ft (2.74 m)
Transport Width
10.50 ft (3.20 m)
Width to Outside of Tracks
9.90 ft (3.02 m)
DRIVE SYSTEM
Caterpillar 320D L Excavator DRIVE SYSTEM specifications
Maximum Drawbar Pull
46,085.90 lbs (20,904.24 kg)
Engine
Caterpillar 320D L Excavator Engine specifications
Bore
4.10 in (10.41 cm)
Displacement
389.00 cu in (6,374.58 cu cm)
Engine Model
Cat C6.4 ACERT
Net Power
148.00 hp (110.37 kw)
Net Power - EEC 80/1269
148.00 hp (110.37 kw)
Net Power - ISO 9249
148.00 hp (110.37 kw)
Net Power - SAE J1349
148.00 hp (110.37 kw)
Power Measured @
1800 rpm
Stroke
5.20 in (13.21 cm)
Hydraulic System
Caterpillar 320D L Excavator Hydraulic System specifications
Boom Cylinder - Bore
4.70 in (11.94 cm)
Boom Cylinder - Stroke
49.60 in (125.98 cm)
Main Implement System - Maximum Flow (2x)
54.00 gpm (204.39 lpm)
Maximum Pressure - Equipment
5076 psi
Maximum Pressure - Swing
3553 psi
Maximum Pressure - Travel
5076 psi
Operating Specifications
Caterpillar 320D L Excavator Operating Specifications specifications
Alternator Supplied Amperage
50 amps
Cooling System Fluid Capacity
6.60 gal (24.98 l)
Engine Oil Capacity
8.00 gal (30.28 l)
Fuel Capacity
108.00 gal (408.78 l)
Hydraulic Pump Flow Capacity
54.00 gpm (204.39 lpm)
Hydraulic System Fluid Capacity
69.00 gal (261.17 l)
Hydraulic System Relief Valve Pressure
5076 psi
Maximum Bucket Capacity
2.60 cu yd (1.99 cu m)
Maximum Cutting Height
32.70 ft (9.97 m)
Operating Voltage
24 volts
Operating Weight
44,820.00 lbs (20,330.04 kg)
Swing Drive Fluid Capacity
2.10 gal (7.95 l)
Service Refill Capacities
Caterpillar 320D L Excavator Service Refill Capacities specifications
Cooling System
6.60 gal (24.98 l)
Engine Oil
8.00 gal (30.28 l)
Final Drive - Each
2.10 gal (7.95 l)
Fuel Tank Capacity
108.00 gal (408.78 l)
Hydraulic System - Including Tank
69.00 gal (261.17 l)
Hydraulic Tank
32.00 gal (121.12 l)
Swing Drive
2.10 gal (7.95 l)
Standards
Caterpillar 320D L Excavator Standards specifications
Brakes
SAE J1026 APR90
Cab/FOGS
SAE J1356 FEB88
Swing Mechanism
Caterpillar 320D L Excavator Swing Mechanism specifications
Swing Speed
11.5 rpm
Track
Caterpillar 320D L Excavator Track specifications
Standard with Long Undercarriage
27.60 in (70.10 cm)
Undercarriage
Caterpillar 320D L Excavator Undercarriage specifications
Drawbar Pull
46,085.90 lbs (20,904.24 kg)
Max Travel Speed
3.50 mph (5.63 kph)
Shoe Size
24.00 in (60.96 cm)
Track Gauge
7.30 ft (2.23 m)
Weights
Caterpillar 320D L Excavator Weights specifications
Operating Weight
44,820.00 lbs (20,330.04 kg)
Operating Weight - Long Undercarriage
47,554.00 lbs (21,570.16 kg)
Operating Weight - Standard Undercarriage
44,820.00 lbs (20,330.04 kg)
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