The Caterpillar 320C, along with its 320CL and 320CLN variants, represents a versatile class of medium hydraulic excavators built for heavy-duty digging, trenching, and lifting applications. Designed with Caterpillar’s proven 3066 engine (in many markets), these machines combine strong performance and durability with flexible configurations: from the standard C-model to the “L” long-undercarriage version and the “LN” narrow-track option for tighter jobsite access.
With a shipping length of around 10 meters, a tail-swing radius under 2.8 m, and a rugged undercarriage, they strike a balance between reach, stability, and maneuverability. Their specifications make them well-suited for infrastructure, construction, and utilities work where both power and precision are critical.
Dimensions
| Model |
Cat 320C |
Cat 320C L |
320C LN |
| A. Shipping Height (w/ bucket), Reach Boom 1.9 m Stick |
122.8 in (3120 mm) |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
| Reach Boom 2.5 m Stick |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
| Reach Boom 2.9 m Stick |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
| ME Boom 1.9 m Stick |
122.8 in (3120 mm) |
122.8 in (3120 mm) |
122.8 in (3120 mm) |
| ME Boom 2.4 m Stick |
128.0 in (3250 mm) |
128.0 in (3250 mm) |
128.0 in (3250 mm) |
| ME Boom 2.9 m Stick |
123.6 in (3140 mm) |
123.6 in (3140 mm) |
123.6 in (3140 mm) |
| VA Boom 1.9 / 2.4 /2.9 m Stick |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
118.5 in (3010 mm) |
| B. Shipping Length, Reach Boom 1.9 m Stick |
379.5 in (9650 mm) |
379.5 in (9650 mm) |
379.5 in (9650 mm) |
| Reach Boom 2.5 m Stick |
371.7 in (9420 mm) |
371.7 in (9420 mm) |
371.7 in (9420 mm) |
| Reach Boom 2.9 m Stick |
369.3 in (9390 mm) |
369.3 in (9390 mm) |
369.3 in (9390 mm) |
| ME Boom 1.9 m Stick |
362.2 in (9200 mm) |
362.2 in (9200 mm) |
362.2 in (9200 mm) |
| ME Boom 2.4 m Stick |
355.9 in (9030 mm) |
355.9 in (9030 mm) |
355.9 in (9030 mm) |
| ME Boom 2.9 m Stick |
354.3 in (9000 mm) |
354.3 in (9000 mm) |
354.3 in (9000 mm) |
| VA Boom 1.9 m Stick |
374.0 in (9520 mm) |
374.0 in (9520 mm) |
374.0 in (9520 mm) |
| VA Boom 2.4 m Stick |
363.8 in (9240 mm) |
363.8 in (9240 mm) |
363.8 in (9240 mm) |
| VA Boom 2.9 m Stick |
363.8 in (9240 mm) |
363.8 in (9240 mm) |
363.8 in (9240 mm) |
| C. Shipping Width, 600 mm shoes |
110.2 in (2800 mm) |
117.3 in (2980 mm) |
98.0 in (2490 mm) |
| Shipping Width, 700 mm shoes |
- |
121.3 in (3080 mm) |
- |
| Shipping Width, 800 mm shoes |
- |
125.2 in (3180 mm) |
- |
| Shipping Width, 900 mm shoes |
- |
129.1 in (3280 mm) |
- |
| Shipping Width, 320C LN w/ 600 mm shoes |
- |
- |
102.0 in (2590 mm) |
| D. Track Length |
160.2 in (4070 mm) |
175.2 in (4450 mm) |
175.2 in (4450 mm) |
| E. Roller Center Distance |
128.3 in (3260 mm) |
143.7 in (3650 mm) |
143.7 in (3650 mm) |
| F. Tail Swing Radius |
109.1 in (2770 mm) |
109.1 in (2770 mm) |
109.1 in (2770 mm) |
| G. Ground Clearance |
18.1 in (460 mm) |
18.1 in (460 mm) |
18.1 in (460 mm) |
| H. Body Height |
84.6 in (2150 mm) |
84.6 in (2150 mm) |
84.6 in (2150 mm) |
| J. Cab Height (w/ FOG) |
120.0 in (3050 mm) |
120.0 in (3050 mm) |
120.0 in (3050 mm) |
| J. Cab Height (w/o FOG) |
116.1 in (2950 mm) |
116.1 in (2950 mm) |
116.1 in (2950 mm) |
| K. Body Width |
98.4 in (2500 mm) |
98.4 in (2500 mm) |
98.4 in (2500 mm) |
| L. Track Gauge |
86.6 in (2200 mm) |
93.7 in (2380 mm) |
78.3 in (1990 mm) |
Working Range (ME Boom)
| CAT 320C w/ |
M1.9C Stick |
M2.4C Stick |
M2.9B Stick |
| Stick Length |
74.8 in (1900 mm) |
94.5 in (2400 mm) |
114.2 in (2900 mm) |
| A Maximum Digging Depth |
206.7 in (5250 mm) |
226.4 in (5750 mm) |
241.7 in (6140 mm) |
| B Maximum Reach at Ground Level |
330.3 in (8390 mm) |
348.4 in (8850 mm) |
361.8 in (9190 mm) |
| C Maximum Cutting Height |
337.8 in (8580 mm) |
346.5 in (8800 mm) |
354.7 in (9010 mm) |
| D Maximum Loading Height |
221.7 in (5630 mm) |
230.7 in (5860 mm) |
246.1 in (6250 mm) |
| E Minimum Loading Height |
113.0 in (2870 mm) |
93.3 in (2370 mm) |
77.6 in (1970 mm) |
| F Maximum Digging Depth (2.44 m Level Bottom) |
197.2 in (5010 mm) |
218.5 in (5550 mm) |
234.6 in (5960 mm) |
| G Maximum Vertical Wall Digging Depth |
138.6 in (3520 mm) |
156.3 in (3970 mm) |
196.1 in (4980 mm) |
| Bucket Tip Radius |
61.0 in (1550 mm) |
61.0 in (1550 mm) |
55.9 in (1420 mm) |
| Bucket Breakout Force |
34171 lbf (152 kN) |
33047 lbf (147 kN) |
27652 lbf (123 kN) |
| Stick Breakout Force |
32822 lbf (146 kN) |
29900 lbf (133 kN) |
26078 lbf (116 kN) |
Working Range (VA Boom)
| CAT 320C w/ |
VA1.9C Stick |
VA2.4B Stick |
VA2.9B Stick |
| Stick Length |
74.8 in (1900 mm) |
98.4 in (2500 mm) |
114.2 in (2900 mm) |
| A Maximum Digging Depth |
204.7 in (5200 mm) |
224.1 in (5690 mm) |
237.4 in (6030 mm) |
| B Maximum Reach at Ground Level |
343.7 in (8740 mm) |
362.2 in (9220 mm) |
376.9 in (9570 mm) |
| C Maximum Cutting Height |
403.1 in (10260 mm) |
419.7 in (10660 mm) |
430.3 in (10930 mm) |
| D Maximum Loading Height |
279.5 in (7100 mm) |
295.3 in (7500 mm) |
319.4 in (8110 mm) |
| E Minimum Loading Height |
153.9 in (3910 mm) |
137.0 in (3480 mm) |
120.1 in (3050 mm) |
| F Max Digging Depth (2.44 m Level Bottom) |
199.6 in (5070 mm) |
219.3 in (5570 mm) |
233.5 in (5930 mm) |
| G Maximum Vertical Wall Digging Depth |
139.8 in (3550 mm) |
157.5 in (4000 mm) |
184.3 in (4680 mm) |
| Bucket Tip Radius |
61.0 in (1550 mm) |
61.0 in (1550 mm) |
55.9 in (1420 mm) |
| Bucket Breakout Force |
34496 lbf (153 kN) |
33271 lbf (148 kN) |
27877 lbf (124 kN) |
| Stick Breakout Force |
33066 lbf (147 kN) |
30125 lbf (134 kN) |
25853 lbf (115 kN) |
Working Range (Reach Boom)
| CAT 320C w/ |
R1.9C Stick |
R2.5B Stick |
R2.9B Stick |
| Stick Length |
74.8 in (1900 mm) |
98.4 in (2500 mm) |
114.2 in (2900 mm) |
| A Maximum Digging Depth |
224.1 in (5690 mm) |
240.6 in (6110 mm) |
257.9 in (6550 mm) |
| B Maximum Reach at Ground Level |
348.4 in (8850 mm) |
366.1 in (9300 mm) |
382.3 in (9710 mm) |
| C Maximum Cutting Height |
346.9 in (8810 mm) |
363.8 in (9240 mm) |
371.7 in (9440 mm) |
| D Maximum Loading Height |
232.3 in (5900 mm) |
255.1 in (6490 mm) |
262.6 in (6670 mm) |
| E Minimum Loading Height |
127.6 in (3240 mm) |
109.8 in (2790 mm) |
93.3 in (2370 mm) |
| F Maximum Digging Depth (2.44 m Level Bottom) |
213.8 in (5430 mm) |
232.3 in (5900 mm) |
250.8 in (6370 mm) |
| G Maximum Vertical Wall Digging Depth |
144.9 in (3680 mm) |
197.2 in (5010 mm) |
214.2 in (5440 mm) |
| Bucket Tip Radius |
61.0 in (1550 mm) |
55.9 in (1420 mm) |
55.9 in (1420 mm) |
| Bucket Breakout Force |
34172 lbf (152 kN) |
28556 lbf (127 kN) |
26741 lbf (119 kN) |
| Stick Breakout Force |
32822 lbf (146 kN) |
26741 lbf (119 kN) |
23824 lbf (106 kN) |
Bucket Specs
| Bucket Linkage / Width |
Bucket Weight |
Bucket Capacity |
| B 43.3 in (1100 mm) |
1854.1 lb (841 kg) |
1.4 yd3 (1.1 m3) |
| B 49.2 in (1250 mm) |
1602.5 lb (727 kg) |
1.37 yd3 (1.05 m3) |
| B 51.2 in (1300 mm) |
1695.8 lb (769 kg) |
1.44 yd3 (1.1 m3) |
| B 55.1 in (1400 mm) |
1681.4 lb (763 kg) |
1.57 yd3 (1.2 m3) |
| B 59.1 in (1500 mm) |
1722.2 lb (781 kg) |
1.77 yd3 (1.35 m3) |
| C 51.2 in (1300 mm) |
2221.1 lb (1008 kg) |
1.77 yd3 (1.35 m3) |
| C 55.1 in (1400 mm) |
2314.1 lb (1050 kg) |
1.83 yd3 (1.4 m3) |
| C 59.1 in (1500 mm) |
2460.8 lb (1116 kg) |
2.03 yd3 (1.55 m3) |
| C 63.0 in (1600 mm) |
2409.1 lb (1093 kg) |
2.22 yd3 (1.7 m3) |
| Extreme B 23.6 in (600 mm) |
1281.6 lb (581 kg) |
0.54 yd3 (0.41 m3) |
| Extreme B 29.5 in (750 mm) |
1399.9 lb (635 kg) |
0.72 yd3 (0.55 m3) |
| Extreme B 39.4 in (1000 mm) |
1613.6 lb (732 kg) |
1.05 yd3 (0.8 m3) |
| Extreme B 49.2 in (1250 mm) |
1792.0 lb (813 kg) |
1.37 yd3 (1.05 m3) |
| Extreme B 55.1 in (1400 mm) |
1893.1 lb (859 kg) |
1.57 yd3 (1.2 m3) |
| Extreme C 29.5 in (750 mm) |
1683.6 lb (764 kg) |
0.82 yd3 (0.63 m3) |
| Extreme C 39.4 in (1000 mm) |
1994.6 lb (905 kg) |
1.24 yd3 (0.95 m3) |
| Extreme C 57.1 in (1450 mm) |
2528.9 lb (1147 kg) |
1.96 yd3 (1.5 m3) |
| Extreme C 63.0 in (1600 mm) |
2679.4 lb (1216 kg) |
2.22 yd3 (1.7 m3) |
Swing
| Swing Speed |
11.5 rpm |
| Swing Torque |
45581 lb ft (61.8 kNm) |
| Tail Swing Radius |
109.1 in (2770 mm) |
| Brake |
Automatic swing parking brake |
Undercarriage
| CAT 320C w/ |
Standard Undercarriage |
Long Undercarriage |
Long Narrow |
| Number of Shoes per Side |
44 |
49 |
49 |
| Number of Carrier Rollers per Side |
2 |
2 |
2 |
| Number of Track Rollers per Side |
7 |
8 |
8 |
| Undercarriage Length |
160.2 in (4070 mm) |
175.2 in (4450 mm) |
175.2 in (4450 mm) |
| Length of Track on Ground |
128.3 in (3260 mm) |
143.7 in (3650 mm) |
143.7 in (3650 mm) |
| Track Gauge |
86.6 in (2200 mm) |
93.7 in (2380 mm) |
78.3 in (1990 mm) |
| Track Shoes (Standard) |
24 in (600 mm) |
24 in (600 mm) |
20 in (500 mm) |
| Track Shoes (Optional) |
24 in (600 mm) HD |
24 in (600 mm) HD
28 in (700 mm)
28 in (700 mm) HD
32 in (800 mm)
36 in (900 mm) |
24 in (600 mm) |
Weight
| Model |
Cat 320C |
Cat 320C L |
Cat 320C LN |
| Operating Weight |
46010 - 48259 lb (20870 - 21890 kg) |
47212 - 49406 lb (21415 - 22410 kg) |
47146 - 49395 lb (21385 - 22405 kg) |
| Ground Pressure |
8.7 - 9.1 psi (60 - 63 kPa) |
6.4 - 6.8 psi (45 - 47 kPa) |
7.1 - 7.4 psi (49 - 51 kPa) |
| Counterweight |
9083 lb (4120 kg) |
9083 lb (4120 kg) |
9744 lb (4420 kg) |
| Upperstructure Weight (w/o counterweight) |
12291 lb (5575 kg) |
12291 lb (5575 kg) |
12291 lb (5575 kg) |
Engine Details
| Number of Cylinders |
6 |
| Engine Make |
Caterpillar (Perkins) |
| Engine Model |
Cat 3066 T |
| Displacement |
389 cu in (6.37 L) |
| Bore |
4.1 in (102 mm) |
| Stroke |
5.2 in (130 mm) |
| Gross Power |
143 hp (107 kw) |
| Net Power |
138 hp (103 kw) |
| Power Measured @ |
1800 rpm |
| Aspiration |
Turbocharged and aftercooled |
| Emission Standards |
US EPA Tier 2 + EU Stage II |
Operational Specs
| Operating Weight |
46010 - 49395 lb (20870 - 22405 kg) |
| Counterweight (320C / 320C L) |
9083 lb (4120 kg) |
| Counterweight (320C LN) |
9744 lb (4420 kg) |
| Operating Voltage |
24 V |
| Alternator |
50 amps |
| Battery |
2x 12 V, 100 Ah, CCA 900, RC: 165 min, 31 BCI |
| Working Lights |
1x Boom + 2x Cab mounted both sides + 1x Frame mounted |
| FOGS |
ISO 10262. Bolt-on FOGS capability |
| Noise Level (interior) |
74 dB(A) |
| Exterior Sound Level |
EU Directive 2000/14/EC |
Drive Train
| Type |
Two-speed auto shift travel |
| Max Travel Speed |
3.4 mph (5.5 km/h) |
| Drawbar Pull |
44040 lbf (196 kN) |
| Travel Control |
Travel control pedals with removable hand levers |
| Service Brakes |
SAE J1026 APR90 |
Hydraulic System
| Type |
Cross Sensing Hydraulic System |
| Main Pump Flow |
2x 54.2 gal/min (2x 205 L/min) |
| Max Pressure (Implements) |
4980 psi (34300 kPa) |
| Max Pressure (Travel) |
4980 psi (34300 kPa) |
| Max Pressure (Swing) |
3625 psi (25000 kPa) |
| Pilot Pump Flow |
10.8 gal/min (41 L/min) |
| Max Pressure (Pilot System) |
600 psi (4120 kPa) |
Hydraulic Cylinders
| Boom Cylinder, Bore |
4.7 in (120 mm) |
| Boom Cylinder, Stroke |
49.6 in (1260 mm) |
| Stick Cylinder, Bore |
5.5 in (140 mm) |
| Stick Cylinder, Stroke |
56.3 in (1430 mm) |
| B Family Bucket Cylinder, Bore |
4.7 in (120 mm) |
| B Family Bucket Cylinder, Stroke |
40.6 in (1030 mm) |
| C Family Bucket Cylinder, Bore |
5.1 in (130 mm) |
| C Family Bucket Cylinder, Stroke |
45.3 in (1150 mm) |
Service Refill Capacities
| Fuel Tank Capacity |
84.5 gal (320 L) |
| Fuel Tank Capacity (Optional) |
106 gal (400 L) |
| Engine Oil Capacity (w/ filter) |
7.9 gal (30 L) |
| Cooling System Capacity |
7.9 gal (30 L) |
| Hydraulic System Capacity (w/ tank) |
53 gal (200 L) |
| Hydraulic Tank Capacity |
32 gal (120 L) |
| Swing Drive Fluid Capacity |
2.1 gal (8 L) |
| Final Drive Fluid Capacity (each) |
2.6 gal (10 L) |
Comments