Page 1
320
Hydraulic Excavator
Technical Specifications
Congurations and features may vary by region. Please consult your Cat® dealer for availability in your area.
Table of Contents
Specications ..............................................................................................2
Engine ........................................................2
Swing Mechanism .............................................2
Weights.......................................................2
Track .........................................................2
Drive .........................................................2
Hydraulic System ..............................................2
Service Refill Capacities ........................................2
Standards.....................................................2
Sound Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Operating Weight and Ground Pressure...........................3
Major Component Weights ......................................3
Dimensions....................................................4
Working Ranges ...............................................5
Reach Boom Lift Capacities – Counterweight: 4.2 mt (9,300 lb) .......7
HD Reach Boom Lift Capacities – Counterweight: 4.7 mt (10,400 lb) ...8
Super Long Reach Boom Lift Capacities –
Counterweight: 4.7 mt (10,400 lb) ..............................9
Bucket Specifications and Compatibility .........................11
Attachments Offering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Thumb Specifications..........................................16
Standard and Optional Equipment ...........................................................................17
Dealer Installed Kit and Attachments ........................................................................20
Page 2
320 Hydraulic Excavator Specifications
Engine
Engine Model Cat® C4.4
Net Power (ISO 9249:2007) 128 kW 172 hp
Engine Power (ISO 14396:2002) 129 kW 174 hp
Bore 105 mm 4 in
Stroke 127 mm 5 in
Displacement 4.4 L 269 in
• The 320 meets U.S. EPA Tier 4 Final emission standards.
• Recommended for use up to 4500 m (14,764 ft) altitude with
engine power derate above 3000 m (9,842.5 ft).
• Net power is tested per ISO 14396:2002. Standards in effect at the
time ofmanufacture.
• Net power available at the ywheel when engine is equipped with
fan, air cleaner, aftertreatment, and alternator with engine speed at
2,200 rpm.
• Rated speed at 2,200 rpm.
Swing Mechanism
Swing Speed 11.30 rpm
Maximum Swing Torque 82 kN·m 60,300 lbf-ft
Weights
Operating Weight 22 500 kg 49,600 lb
• Reach boom, R2.9 (9'6") stick, HD 1.19 m (1.56 yd) bucket
790mm (31 in) triple grouser shoes, 4.2 t (10.400 lb) counterweight.
Track
Hydraulic System
Main System – Maximum Flow –
Implement
Maximum Pressure – Equipment –
Normal
Maximum Pressure – Equipment –
Lift Mode
Maximum Pressure – Travel 34 300 kPa 4,974 psi
Maximum Pressure – Swing 27 500 kPa 3,998 psi
Boom Cylinder – Bore 120 mm 4.7 in
Boom Cylinder – Stroke 1260 mm 49.6 in
Stick Cylinder – Bore 140 mm 5.5 in
Stick Cylinder – Stroke 1504 mm 59.2 in
Bucket Cylinder – Bore 120 mm 4.7 in
Bucket Cylinder – Stroke 1104 mm 43.5 in
429 L/min
(214.5 ×
2pumps)
35 000 kPa 5,075 psi
38 000 kPa 5,510 psi
113 gal/min
(56.5 ×
2pumps)
Service Refill Capacities
Fuel Tank Capacity 345 L 86.6 gal
Cooling System 25 L 6.6 gal
Engine Oil 15 L 4.0 gal
Swing Drive (each) 12 L 3.2 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
DEF Tank 39 L 10.3 gal
Standard Track Shoe Width 790 mm 31 in
Number of Shoes (each side) 49
Number of Track Rollers (each side) 8
Number of Carrier Rollers (each side) 2
Drive
Gradeability 35°/70%
Maximum Travel Speed 5.7 km/h 3.5 mph
Maximum Drawbar Pull –
Long Undercarriage
205 kN 45,996 lbf
Standards
Brakes ISO 10265: 2008
Cab/ROPS ISO 12117-2: 2008
FOGS (optional) ISO 10262-2: 1998
Sound Performance
ISO 6395:2008 (external) 99 dB(A)
ISO 6396:2008 ISO 6396 (inside cab) 70 dB(A)
• Hearing protection may be needed when operating with an open
operator station and cab (when not properly maintained or doors/
windows open) for extended periods or in a noisy environment.
2
Page 3
320 Hydraulic Excavator Specifications
Operating Weight and Ground Pressure
790 mm (31 in)
Triple Grouser Shoes
Weight Ground Pressure
4.2 mt (9,300 lb) Counterweight + Base Machine
Reach Boom + R2.9 (9'6") Stick + 1.19 m (1.56 yd) HD Bucket 22 500 kg 49,600 lb 35.5 kPa 5.2 psi
4.7 mt (10,400 lb) Counterweight + Base Machine
3
HD Reach Boom + HD R2.9 (9'6") Stick + 1.19 m
3
SLR Boom + SLR Stick + 0.53 m
All operating weights include a 90% fuel tank with 75 kg (165 lb) operator.
(0.69 yd3) GD Bucket 23 900 kg 52,700 lb 37.8 kPa 5.5 psi
Major Component Weights
Base Machine (with 4.2 mt [9,300 lb] counterweight, semi-HD swing frame, standard base frame with
HDtrack rollers and standard carrier rollers for long undercarriage, without boom cylinder – does not
include90% fuel and 75 kg [165 lb] operator)
Base Machine (with 4.7 mt [10,400 lb] counterweight, HD swing frame, HD base frame with SD track rollers
and SD carrier rollers for Long undercarriage without boom cylinder – does not include 90% fuel and 75kg
[165 lb] operator)
Track Shoes:
790 mm (31 in) Width, 10 mm (0.39 in) Thick Triple Grouser Track Shoes for Long Undercarriage
withStep Extension for ISO 2867:2011
Two Boom Cylinders 340 750
Weight of 90% Fuel Tank and 75 kg (165 lb) Operator 310 680
Counterweights:
4.2 mt Counterweight 4200 9,300
4.7 mt Counterweight 4700 10,400
Swing Frame:
Semi-HD Swing Frame 1910 4,210
Undercarriage:
Standard Base Frame with HD Track Rollers and Standard Carrier Rollers for Long Undercarriage 4390 9,700
Booms (including lines, pins, stick cylinder):
Reach Boom (5.7 m/18'8") 1710 3,800
HD Reach Boom (5.7 m/18'8") 2010 4,400
Super Long Reach Boom (8.85 m/29'0") 2170 4,800
Sticks (including lines, pins, bucket cylinder, bucket linkage):
Reach Stick (R2.9B1/9'6") 990 2,200
HD Thumb Ready Reach Stick (R2.9B1/9'6") 1300 2,900
Super Long Reach Stick (6.28A/20'7") 1340 3,000
Buckets (without linkage):
1.19 m (1.56 yd) HD 960 2,100
0.57 m (0.75 yd) Ditch Cleaning 390 900
Quick Coupler:
Pin Grabber QC 390 900
(1.56 yd3) HD Bucket 24 300 kg 53,600 lb 38.4 kPa 5.6 psi
kg lb
14 800 32,600
16 000 35,300
3370 7,400
3
Page 4
320 Hydraulic Excavator Specifications
2
Dimensions
All dimensions are approximate and may vary depending on bucket selection.
1
43
6
5
9
10
Boom Options HD Reach/Reach Boom SLR Boom
5.7 m (18'8") 8.85 m (29'0")
Stick Options HD TR Reach/Reach Stick SLR Stick
R2.9B1 (9'6") 6.28A (20'7")
Machine Height:
1
Top of Cab Height 2960 mm 9'9" 2960 mm 9'9"
Top of FOGS Height 3100 mm 10'2" 3100 mm 10'2"
Handrails Height 2950 mm 9'8" 2950 mm 9'8"
With Boom/Stick/Bucket Installed 3160 mm 10'4" 3190 mm 10'6"
With Boom/Stick Installed 2910 mm 9'7" 3070 mm 10'1"
With Boom Installed 2480 mm 8'2" 2650 mm 8'8"
Machine Length:
2
With Boom/Stick/Bucket Installed 9530 mm 31'3" 12 750 mm 41'10"
With Boom/Stick Installed 9500 mm 31'2" 12 760 mm 41'10"
With Boom Installed 8450 mm 27'9" 8920 mm 29'3"
Upperframe Width without Walkways 2780 mm 9'1" 2780 mm 9'1"
3
Tail Swing Radius 2830 mm 9'3" 2830 mm 9'3"
4
Counterweight Clearance 1050 mm 3'5" 1050 mm 3'5"
5
Ground Clearance 470 mm 1'7" 470 mm 1'7"
6
Track Length 4450 mm 14'7" 4450 mm 14'7"
7
Length to Center of Rollers 3650 mm 12'0" 3650 mm 12'0"
8
Track Gauge 2380 mm 7'9" 2380 mm 7'9"
9
Undercarriage Width:
10
790 mm (31 in) Shoes 3170 mm 10'5" 3170 mm 10'5"
Bucket Type HD Ditch Cleaning (DC)
Bucket Capacity 1.14 m 1.50 yd 0.57 m 0.75 yd
Bucket Tip Radius 1470 mm 4'10" 1070 mm 3'6"
8
7
4
Page 5
320 Hydraulic Excavator Specifications
m
)
15
10
20
10
15
20
25
30
35
ft
Working Ranges
All dimensions are approximate and may vary depending on bucket selection.
11
10
9
8
7
6
5
3
4
3
2
5
1
0
0
1
5
2
7
3
1
4
5
6
7
4
5
2
6
01234567891011 –1
05101520253035 ft
R2.9B1 (9'6"
m
Boom Option HD Reach/Reach Boom
5.7 m (18'8")
Stick Option HD TR Reach/Reach Stick
R2.9B1 (9'6")
Maximum Digging Depth 6620 mm 21'9"
1
Maximum Reach at Ground Line 9760 mm 32'0"
2
Maximum Cutting Height 9330 mm 30'7"
3
Maximum Loading Height 6590 mm 21'7"
4
Minimum Loading Height 2270 mm 7'5"
5
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 6440 mm 21'2"
6
Maximum Vertical Wall Digging Depth 5360 mm 17'7"
7
Bucket Digging Force (ISO) 163 kN 36,711 lbf
Stick Digging Force (ISO) 109 kN 24,486 lbf
Bucket Type HD
Bucket Capacity 1.14 m 1.50 yd
Bucket Tip Radius 1470 mm 4'10"
5
Page 6
320 Hydraulic Excavator Specifications
m
)
ft
10
15
20
25
30
40
35
10
15
20
25
30
40
35
45
Working Ranges
All dimensions are approximate and may vary depending on bucket selection.
14
13
12
11
10
9
9
8
8
7
7
6
6
5
5
4
4
3
2
5
1
0
0
1
5
2
3
4
5
6
Boom Option SLR Boom
Stick Option SLR Stick
Maximum Digging Depth 11 540 mm 37'10"
1
Maximum Reach at Ground Line 15 570 mm 51'1"
2
Maximum Cutting Height 13 540 mm 44'5"
3
Maximum Loading Height 11 440 mm 37'6"
4
Minimum Loading Height 2240 mm 7'4"
5
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 11 440 mm 37'6"
6
Maximum Vertical Wall Digging Depth 11 020 mm 36'2"
7
Bucket Digging Force (ISO) 62 kN 13,841 lbf
7
8
9
10
11
12
Stick Digging Force (ISO) 49 kN 10,966 lbf
Bucket Type Ditch Cleaning (DC)
Bucket Capacity 0.57 m 0.75 yd
Bucket Tip Radius 1070 mm 3'6"
3
4
5
2
6.28A (20'7"
7
1
121315 10 911
1416181920 17
35 304045 25 20 15 10 5–50506065 55
87654
6
3210 –2 –3–1
m
ft
8.85 m (29'0")
6.28A (20'7")
6
Page 7
320 Hydraulic Excavator Specifications
Reach Boom Lift Capacities – Counterweight: 4.2 mt (9,300 lb) – without Bucket, Heavy Lift: On
2.9 m (9'6")
R2.9B1
1.5 m/5.0 ft 3.0 m/10.0 ft 4.5 m/15.0 ft 6.0 m/20.0 ft 7.5 m/25.0 ft
7.5 m kg *4950 *4950 *4300 *4300 6.15
25.0 ft lb *9,500 *9,500 20.00
6.0 m kg *5450 *5450 *3950 *3950 7.29
20.0 ft lb *12,000 11,900 *8,750 *8,750 24.17
4.5 m kg *6000 5400 *5650 3850 *3900 3450 7.99
15.0 ft lb *13,050 11,600 *12,400 8,200 *8,550 7,650 26.67
3.0 m kg *8750 7850 *6900 5150 5750 3750 *4000 3150 8.36
10.0 ft lb *18,900 16,900 *14,950 11,150 12,350 8,000 *8,750 6,950 27.50
1.5 m kg *10 650 7350 7850 4950 5600 3600 *4250 3050 8.45
5.0 ft lb *22,950 15,850 16,850 10,650 12,100 7,800 *9,300 6,700 28.33
0 m kg *6600 *6600 *11 650 7100 7650 4800 5550 3550 *4700 3100 8.26
0 ft lb *15,150 *15,150 *25,200 15,250 16,450 10,300 11,900 7,600 *10,300 6,850 27.50
–1.5 m kg *7050 *7050 *11 400 *11 400 *11 750 7000 7550 4700 5500 3500 5250 3350 7.78
–5.0 ft lb *15,750 *15,750 *25,850 *25,850 *25,500 15,100 16,250 10,150 11,850 7,550 11,550 7,400 25.83
–3.0 m kg *12 100 *12 100 *15 600 13 650 *11 000 7050 7600 4750 6200 3950 6.95
–10.0 ft lb *27,100 *27,100 *33,800 29,200 *23,800 15,200 16,350 10,200 13,700 8,700 23.33
–4.5 m kg *12 500 *12 500 *9000 7250 *6800 5400 5.60
–15.0 ft lb *26,700 *26,700 *19,100 15,650 *14,950 12,150 18.33
5.7 m (18'8")
790 mm (31")
Triple Grouser Shoes
2380 mm (7'9")
3650 mm (12'0")
4450 mm (14'7")
m
ft
ISO 10567:2007
* Indicates that the load is limited by hydraulic lifting capacity rather than tipping load. The above loads are in compliance with hydraulic excavator lift capacity
standard ISO 10567:2007. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping load. Weight of all lifting accessories must be deducted from the
above lifting capacities. Lifting capacities are based on the machine standing on a firm, uniform supporting surface. The use of a work tool attachment point to
handle/lift objects, could affect the machine lift performance.
Lift capacity stays with ±5% for all available track shoes.
Always refer to the appropriate Operation and Maintenance Manual for specific product information.
7
Page 8
320 Hydraulic Excavator Specifications
HD Reach Boom Lift Capacities – Counterweight: 4.7 mt (10,400 lb) – without Bucket, Heavy Lift: On
2.9 m (9'6")
HD
R2.9B1-
TRS
1.5 m/5.0 ft 3.0 m/10.0 ft 4.5 m/15.0 ft 6.0 m/20.0 ft 7.5 m/25.0 ft
7.5 m kg *4900 *4900 *4250 *4250 6150
25.0 ft lb *9,400 *9,400 19'9"
6.0 m kg *5350 *5350 *3900 *3900 7290
20.0 ft lb *11,750 *11,750 *8,650 *8,650 23'8"
4.5 m kg *5900 5700 *5500 4000 *3850 3600 7990
15.0 ft lb *12,800 12,200 *12,100 8,600 *8,450 8,000 26'1"
3.0 m kg *8600 8300 *6750 5450 *5900 3900 *3950 3300 8360
10.0 ft lb *18,500 17,850 *14,650 11,700 *12,850 8,400 *8,600 7,250 27'4"
1.5 m kg *10 400 7750 *7650 5200 5900 3800 *4150 3200 8450
5.0 ft lb *22,450 16,650 *16,600 11,150 12,650 8,150 *9,150 7,000 27'8"
0 m kg *6750 *6750 *11 400 7450 8000 5000 5750 3700 *4600 3250 8260
0 ft lb *15,450 *15,450 *24,700 16,000 17,200 10,750 12,400 7,950 *10,150 7,100 27'1"
–1.5 m kg *7200 *7200 *11 650 *11 650 *11 500 7350 7900 4900 5750 3650 *5400 3500 7780
–5.0 ft lb *16,050 *16,050 *26,450 *26,450 *24,950 15,800 17,000 10,600 12,350 7,900 *11,950 7,700 25'5"
–3.0 m kg *12 350 *12 350 *15 300 14 300 *10 800 7400 7950 4950 6450 4100 6950
–10.0 ft lb *27,750 *27,750 *33,100 30,650 *23,300 15,950 17,100 10,650 14,300 9,100 22'8"
–4.5 m kg *12 150 *12 150 *8750 7650 *6600 5650 5600
–15.0 ft lb *26,050 *26,050 *18,600 16,450 *14,500 12,700 18'0"
5.7 m (18'8")
790 mm (31")
Triple Grouser Shoes
2380 mm (7'9")
3650 mm (12'0")
4450 mm (14'7")
m
ft
ISO 10567:2007
* Indicates that the load is limited by hydraulic lifting capacity rather than tipping load. The above loads are in compliance with hydraulic excavator lift capacity
standard ISO 10567:2007. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping load. Weight of all lifting accessories must be deducted from the
above lifting capacities. Lifting capacities are based on the machine standing on a firm, uniform supporting surface. The use of a work tool attachment point to
handle/lift objects, could affect the machine lift performance.
Lift capacity stays with ±5% for all available track shoes.
Always refer to the appropriate Operation and Maintenance Manual for specific product information.
8
Page 9
320 Hydraulic Excavator Specifications
Super Long Reach Boom Lift Capacities – Counterweight: 4.7 mt (10,400 lb) – without Bucket
6.28 m (20'7")
Super
Long
Reach
1.5 m/5.0 ft 3.0 m/10.0 ft 4.5 m/15.0 ft 6.0 m/20.0 ft 7.5 m/25.0 ft
12.0 m kg *1300 *1300 10.35
40.0 ft lb *2,850 *2,850 33.33
10.5 m kg *1200 *1200 11.66
35.0 ft lb *2,600 *2,600 38.33
9.0 m kg *1150 *1150 12.66
30.0 ft lb *2,500 *2,500 41.67
7.5 m kg *1100 *1100 13.41
25.0 ft lb *2,450 *2,450 44.17
6.0 m kg *1100 *1100 13.97
20.0 ft lb *2,400 *2,400 45.83
4.5 m kg *1100 *1100 14.34
15.0 ft lb *2,450 *2,450 47.50
3.0 m kg *4700 *4700 *6050 *6050 *4450 *4450 *3600 *3600 *1150 *1150 14.55
10.0 ft lb *11,900 *11,900 *12,900 *12,900 *9,600 *9,600 *7,800 *7,800 *2,500 *2,500 48.33
1.5 m kg *6750 6550 *5250 4500 *4100 3350 *1200 1150 14.60
5.0 ft lb *16,000 14,150 *11,300 9,750 *8,900 7,200 *2,600 2,500 48.33
0 m kg *2050 *2050 *4700 *4700 *5900 4100 *4550 3050 *1300 1100 14.49
0 ft lb *4,550 *4,550 *10,750 *10,750 *12,700 8,800 *9,800 6,600 *2,800 2,450 47.50
–1.5 m kg *2100 *2100 *2750 *2750 *4650 *4650 *6250 3800 *4850 2850 *1400 1150 14.23
–5.0 ft lb *4,600 *4,600 *6,100 *6,100 *10,550 *10,550 *13,550 8,150 *10,450 6,150 *3,000 2,450 46.67
–3.0 m kg *2850 *2850 *3550 *3550 *5200 *5200 *6450 3650 4750 2750 *1500 1200 13.79
–10.0 ft lb *6,350 *6,350 *7,900 *7,900 *11,750 11,750 *13,900 7,850 10,200 5,850 *3,300 2,550 45.83
–4.5 m kg *3700 *3700 *4450 *4450 *6100 5500 *6400 3650 4700 2700 *1700 1250 13.17
–15.0 ft lb *8,200 *8,200 *9,900 *9,900 *13,750 11,800 *13,800 7,800 10,050 5,750 *3,800 2,750 43.33
–6.0 m kg *4550 *4550 *5450 *5450 *7250 5600 *6150 3650 4700 2700 *2000 1400 12.34
–20.0 ft lb *10,150 *10,150 *12,200 *12,200 *16,350 12,050 *13,250 7,900 10,100 5,800 *4,500 3,100 40.83
–7.5 m kg *5500 *5500 *6600 *6600 *7300 5800 *5650 3800 *4550 2750 *2550 1650 11.24
–25.0 ft lb *12,300 *12,300 *14,850 *14,850 *15,650 12,500 *12,150 8,150 *9,800 5,950 *5,700 3,650 36.67
–9.0 m kg *8000 *8000 *6150 6100 *4850 3950 *3950 2900 *2700 2100 9.80
–30.0 ft lb *17,500 *17,500 *13,100 *13,100 *10,350 8,550 *8,300 6,300 *5,900 4,700 31.67
8.85 m (29'0")
790 mm (31")
Triple Grouser Shoes
2380 mm (7'9")
3650 mm (12'0")
4450 mm (14'7")
m
ft
ISO 10567:2007
* Indicates that the load is limited by hydraulic lifting capacity rather than tipping load. The above loads are in compliance with hydraulic excavator lift capacity
standard ISO 10567:2007. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping load. Weight of all lifting accessories must be deducted from the
above lifting capacities. Lifting capacities are based on the machine standing on a firm, uniform supporting surface. The use of a work tool attachment point to
handle/lift objects, could affect the machine lift performance.
Lift capacity stays with ±5% for all available track shoes.
Always refer to the appropriate Operation and Maintenance Manual for specific product information.
(continued on next page)
9
Page 10
320 Hydraulic Excavator Specifications
Super Long Reach Boom Lift Capacities – Counterweight: 4.7 mt (10,400 lb) – without Bucket (continued)
6.28 m (20'7")
Super
Long
Reach
9.0 m/30.0 ft 10.5 m/35.0 ft 12.0 m/40.0 ft 13.5 m/45.0 ft
12.0 m kg *1300 *1300 10.35
40.0 ft lb *2,850 *2,850 33.33
10.5 m kg *2200 *2200 *1200 *1200 11.66
35.0 ft lb *4,750 *4,750 *2,600 *2,600 38.33
9.0 m kg *2200 *2200 *2000 2000 *1150 *1150 12.66
30.0 ft lb *4,800 *4,800 *3,700 *3,700 *2,500 *2,500 41.67
7.5 m kg *2250 *2250 *2250 1950 *1100 *1100 13.41
25.0 ft lb *4,950 *4,950 *4,900 4,150 *2,450 *2,450 44.17
6.0 m kg *2400 *2400 *2300 1900 *1850 1500 *1100 *1100 13.97
20.0 ft lb *5,200 *5,200 *5,000 4,050 *3,250 3,100 *2,400 *2,400 45.83
4.5 m kg *2800 *2800 *2600 2350 *2400 1850 *2300 1450 *1100 *1100 14.34
15.0 ft lb *6,050 *6,050 *5,600 5,000 *5,250 3,900 *4,650 3,050 *2,450 *2,450 47.50
3.0 m kg *3100 2800 *2800 2200 *2550 1750 2300 1400 *1150 *1150 14.55
10.0 ft lb *6,750 6,000 *6,050 4,700 *5,550 3,700 4,900 2,950 *2,500 *2,500 48.33
1.5 m kg *3450 2600 *3000 2050 *2700 1650 2250 1350 *1200 1150 14.60
5.0 ft lb *7,450 5,550 *6,500 4,350 5,800 3,500 4,800 2,800 *2,600 2,500 48.33
0 m kg *3750 2400 3200 1900 2600 1550 2200 1250 *1300 1100 14.49
0 ft lb *8,050 5,150 6,800 4,100 5,600 3,300 4,650 2,700 *2,800 2,450 47.50
–1.5 m kg 3800 2250 3050 1800 2550 1500 2150 1250 *1400 1150 14.23
–5.0 ft lb 8,150 4,800 6,600 3,850 5,450 3,150 4,600 2,600 *3,000 2,450 46.67
–3.0 m kg 3700 2150 3000 1750 2500 1450 2100 1200 *1500 1200 13.79
–10.0 ft lb 7,950 4,600 6,400 3,700 5,350 3,050 *3,700 2,600 *3,300 2,550 45.83
–4.5 m kg 3650 2100 2950 1700 2450 1400 *1700 1250 13.17
–15.0 ft lb 7,850 4,500 6,350 3,650 5,300 3,050 *3,800 2,750 43.33
–6.0 m kg 3650 2100 2950 1700 2500 1450 *2000 1400 12.34
–20.0 ft lb 7,850 4,500 6,400 3,700 *5,150 3,150 *4,500 3,100 40.83
–7.5 m kg 3700 2150 3050 1800 *2550 1650 11.24
–25.0 ft lb *8,000 4,650 *6,450 3,850 *5,700 3,650 36.67
–9.0 m kg *3150 2300 *2700 2100 9.80
–30.0 ft lb *6,550 5,000 *5,900 4,700 31.67
8.85 m (29'0")
790 mm (31")
Triple Grouser Shoes
2380 mm (7'9")
3650 mm (12'0")
4450 mm (14'7")
m
ft
ISO 10567:2007
* Indicates that the load is limited by hydraulic lifting capacity rather than tipping load. The above loads are in compliance with hydraulic excavator lift capacity
standard ISO 10567:2007. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping load. Weight of all lifting accessories must be deducted from the
above lifting capacities. Lifting capacities are based on the machine standing on a firm, uniform supporting surface. The use of a work tool attachment point to
handle/lift objects, could affect the machine lift performance.
Lift capacity stays with ±5% for all available track shoes.
Always refer to the appropriate Operation and Maintenance Manual for specific product information.
10
Page 11
Bucket Specifications and Compatibility
320 Hydraulic Excavator Specifications
4.2 m ton
(9,300lb)
Counterweight
Width Capacity Weight Fill
Linkage
Pin-On (No Quick Coupler)
General Duty Capacity B 600 24 0.55 0.72 620 1,366 100
B 750 30 0.75 0.98 717 1,580 100
B 900 36 0.95 1.24 793 1,747 100
B 1050 42 1.16 1.52 848 1,869 100
B 1200 48 1.38 1.80 924 2,038 100
B 1350 54 1.59 2.08 1002 2,210 100
General Duty Capacity –
WideTip
Heavy Duty B 600 24 0.46 0.60 647 1,426 100
Heavy Duty Power B 1050 42 0.96 1.26 898 1,980 100
Severe Duty B 600 24 0.46 0.61 683 1,506 90
Severe Duty Power B 900 36 0.79 1.03 853 1,881 90
Clean Up B 1800 72 1.60 2.09 979 2,157 100
Ditch Cleaning B 1500 60 1.01 1.32 651 1,436 100
Ditch Cleaning Tilt B 1500 60 0.90 1.18 948 2,090 100
Tamping B 2200 86 0.72 0.94 868 1,913 100
General Duty 312 900 36 0.53 0.69 403 888 100
Ditch Cleaning 312 1200 48 0.57 0.74 386 851 100
The above loads are in compliance with hydraulic excavator standard EN474-5:2006 + A3:2013,
they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity with front linkage
fully extended at ground line with bucket curled.
Capacity based on ISO 7451:2007.
Bucket weight with General Duty tips.
Caterpillar recommends using appropriate work tools to maximize the value customers receive from our products. Use of work tools, including buckets, which are
outside of Caterpillar’s recommendations or specifications for weight, dimensions, flows, pressures, etc. may result in less-than-optimal performance, including
but not limited to reductions in production, stability, reliability, and component durability. Improper use of a work tool resulting in sweeping, prying, twisting and/or
catching of heavy loads will reduce the life of the boom and stick.
B 600 24 0.55 0.72 617 1,360 100
B 750 30 0.75 0.98 715 1,576 100
B 900 36 0.95 1.24 791 1,743 100
B 1050 42 1.16 1.52 861 1,899 100
B 1200 48 1.38 1.80 938 2,069 100
B 1350 54 1.59 2.08 1016 2,241 100
B 750 30 0.64 0.84 752 1,658 100
B 900 36 0.81 1.06 835 1,841 100
B 1050 42 1.00 1.31 892 1,967 100
B 1200 48 1.19 1.56 975 2,150 100
B 1350 54 1.38 1.81 1060 2,336 100
B 1200 48 1.14 1.49 983 2,167 100
B 750 30 0.64 0.84 795 1,753 90
B 900 36 0.81 1.06 885 1,950 90
B 1050 42 1.00 1.31 948 2,091 90
B 1200 48 1.19 1.56 1038 2,289 90
B 2000 78 1.76 2.31 1045 2,303 100
B 1800 72 1.24 1.62 739 1,630 100
B 1800 72 1.11 1.45 1063 2,344 100
B 1800 72 1.40 1.83 1105 2,437 100
B 2000 79 1.23 1.61 1132 2,496 100
B 2200 86 0.90 1.18 891 1,965 100
mm in m
Maximum load with pin-on (payload + bucket) kg 3010 3245 800
3
3
yd
kg lb % R2.9 (9'6")
lb 6,636 7,154 1,764
Reach Reach HD
X X
X X
Maximum Material Density:
2100 kg/m3 (3,500 lb/yd3)
1800 kg/m3 (3,000 lb/yd3)
1500 kg/m3 (2,500 lb/yd3)
1200 kg/m3 (2,000 lb/yd3)
900 kg/m3 (1,500 lb/yd3)
Not Recommended
X
4.7 m ton
(10,400lb)
Counterweight
R2.9 (9'6")
HDTRS
SLR
(continued on next page)
11
Page 12
320 Hydraulic Excavator Specifications
Bucket Specifications and Compatibility (continued)
4.2 m ton
(9,300lb)
Counterweight
Width Capacity Weight Fill
Linkage
With Cat Pin Grabber Coupler
General Duty Capacity B 600 24 0.55 0.72 620 1,366 100
B 750 30 0.75 0.98 717 1,580 100
B 900 36 0.95 1.24 793 1,747 100
B 1050 42 1.16 1.52 848 1,869 100
B 1200 48 1.38 1.80 924 2,038 100
B 1350 54 1.59 2.08 1002 2,210 100
General Duty Capacity –
WideTip
Heavy Duty B 600 24 0.46 0.60 647 1,426 100
Heavy Duty Power B 1050 42 0.96 1.26 898 1,980 100
Heavy Duty Pin Grabber
Performance
Severe Duty B 600 24 0.46 0.61 683 1,506 90
Clean Up B 1800 72 1.60 2.09 979 2,157 100
Ditch Cleaning B 1500 60 1.01 1.32 651 1,436 100
Ditch Cleaning Tilt B 1500 60 0.90 1.18 948 2,090 100
The above loads are in compliance with hydraulic excavator standard EN474-5:2006 + A3:2013,
they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity with front linkage
fully extended at ground line with bucket curled.
Capacity based on ISO 7451:2007.
Bucket weight with General Duty tips.
Caterpillar recommends using appropriate work tools to maximize the value customers receive from our products. Use of work tools, including buckets, which are
outside of Caterpillar’s recommendations or specifications for weight, dimensions, flows, pressures, etc. may result in less-than-optimal performance, including
but not limited to reductions in production, stability, reliability, and component durability. Improper use of a work tool resulting in sweeping, prying, twisting and/or
catching of heavy loads will reduce the life of the boom and stick.
B 600 24 0.55 0.72 617 1,360 100
B 750 30 0.75 0.98 715 1,576 100
B 900 36 0.95 1.24 791 1,743 100
B 1050 42 1.16 1.52 861 1,899 100
B 1200 48 1.38 1.80 938 2,069 100
B 1350 54 1.59 2.08 1016 2,241 100
B 750 30 0.64 0.84 752 1,658 100
B 900 36 0.81 1.06 835 1,841 100
B 1050 42 1.00 1.31 892 1,967 100
B 1200 48 1.19 1.56 975 2,150 100
B 1350 54 1.38 1.81 1060 2,336 100
B 1200 48 1.14 1.49 983 2,167 100
B 600 24 0.44 0.57 682 1,503 100
B 750 30 0.60 0.79 787 1,735 100
B 900 36 0.76 1.00 876 1,931 100
B 1050 42 0.93 1.22 940 2,072 100
B 1200 48 1.11 1.45 1031 2,272 100
B 1350 54 1.28 1.67 1122 2,474 100
B 750 30 0.64 0.84 795 1,753 90
B 900 36 0.81 1.06 885 1,950 90
B 1050 42 1.00 1.31 948 2,091 90
B 1200 48 1.19 1.56 1038 2,289 90
B 900 36 0.79 1.03 853 1,881 90
B 2000 78 1.76 2.31 1045 2,303 100
B 1800 72 1.24 1.62 739 1,630 100
B 1800 72 1.11 1.45 1063 2,344 100
B 1800 72 1.40 1.83 1105 2,437 100
B 2000 79 1.23 1.61 1132 2,496 100
mm in m
Maximum load with coupler (payload + bucket) kg 2636 2825 600
3
3
yd
kg lb % R2.9 (9'6")
lb 5,811 6,228 1,323
Reach Reach HD
Maximum Material Density:
2100 kg/m3 (3,500 lb/yd3)
1800 kg/m3 (3,000 lb/yd3)
1500 kg/m3 (2,500 lb/yd3)
1200 kg/m3 (2,000 lb/yd3)
900 kg/m3 (1,500 lb/yd3)
4.7 m ton
(10,400lb)
Counterweight
R2.9 (9'6")
HDTRS
SLR
12
Page 13
320 Hydraulic Excavator Specifications
Attachments Offering Guide
Not all Attachments are available in all regions. Consult your Cat dealer for congurations available in your region.
Match
ü
PIN-ON ATTACHMENTS
Undercarriage L
Counterweight 4.2 mt (9,300 lb)
Boom Type Reach
Stick Length 2.5 m (8'2") 2.9 m (9'6") 2.9 m TR (9'6")
Hydraulic Hammers H115 S
Multi-Processors MP318 Concrete Cutter Jaw
Demolition and Sorting Grapples G318
Mobile Scrap and Demolition Shears S3025
Pulverizers P215
Compactors (Vibratory Plate) CVP110
Mulchers HM4015 with Bite Limiter
Orange Peel Grapples GSH420-500
†
Allowed usage on machine lessthan 50%
H120 GC
H120 GC S
H120 S
H130 GC
H130 GC S
H130 S
MP318 Demolition Jaw
MP318 Pulverizer Jaw
MP318 Shear Jaw
MP318 Universal Jaw
G318 WH-800
G318 WH-1100
S3025 Flat Top
GSH420-600
GSH420-750
GSH425-750
GSH425-950
GSH425-1150
GSH520-500
GSH520-600
GSH520-750
GSH525-750
No Match 1800 kg/m3 (3,000 lb/yd3) 1200 kg/m3 (2,000 lb/yd3)
ü ü ü
ü ü ü
ü ü ü
ü ü ü
*ü†
*ü†
ü *ü† ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
(continued on next page)
ü
ü
13
Page 14
320 Hydraulic Excavator Specifications
Attachments Offering Guide (continued)
Not all Attachments are available in all regions. Consult your Cat dealer for congurations available in your region.
Match
ü
CAT PIN GRABBER COUPLER ATTACHMENTS
Undercarriage L
Counterweight 4.2 mt (9,300 lb)
Boom Type Reach
Stick Length 2.5 m (8'2") 2.9 m (9'6") 2.9 m TR (9'6")
Hydraulic Hammers H115 S
Multi-Processors MP318 Concrete Cutter Jaw
Demolition and Sorting Grapples G318
Mobile Scrap and Demolition Shears S3025
Pulverizers P215
Compactors (Vibratory Plate) CVP110
Mulchers HM4015 with Bite Limiter
Working range front only
*
H120 GC
H120 GC S
H120 S
H130 GC
H130 GC S
H130 S
MP318 Demolition Jaw
MP318 Pulverizer Jaw
MP318 Shear Jaw
MP318 Universal Jaw
G318 WH-800
G318 WH-1100
S3025 Flat Top
†
Allowed usage on machine lessthan 50%
ü ü ü
*ü† *ü† ü
*ü† *ü† ü
*ü† *ü† ü
*ü† **ü†* ü
*ü† *ü† ü
*ü† *ü† ü
ü ü ü
ü ü ü
ü *ü* ü
ü ü ü
ü ü ü
ü ü ü
ü ü ü
ü *ü* *ü*
ü *ü* ü
ü *ü* ü
ü ü ü
ü ü ü
ü ü ü
(continued on next page)
14
Page 15
320 Hydraulic Excavator Specifications
Attachments Offering Guide (continued)
Not all Attachments are available in all regions. Consult your Cat dealer for congurations available in your region.
Match
ü
TRS18-S70 ATTACHMENTS
Undercarriage L
Counterweight 4.2 mt (9,300 lb)
Boom Type Reach
Stick Length 2.5 m (8'2") 2.9 m (9'6")
Hydraulic Hammers H115 S
Compactors (Vibratory Plate) CVP75
BOOM-MOUNT ATTACHMENTS
Undercarriage L
Counterweight 4.2 mt (9,300 lb)
Boom Type Reach
Mobile Scrap and Demolition Shears S2050
†
Allowed usage on machine lessthan 50%
H120 GC S
H120 S
CVP110
S3035
ü ü
*ü† *ü†
*ü† *ü†
ü ü
ü ü
ü
ü
15
Page 16
320 Hydraulic Excavator Specifications
Thumb Specifications
Match
ü
Bucket Type
General Duty 5 902 36
Heavy Duty 5 902 36
Heavy Duty Power 5 1056 42
Severe Duty 5 902 36
Pin Grabber
Performance
Buckets
^ Maximum bucket payload will vary depending on thumb’s mass, stick length, counterweight, and coupler type; please select bucket using the bucket matchingguide.
Tooth
Quantity
5 1056 42
6 1208 48
7 1350 54
5 1056 42
6 1208 48
7 1350 54
6 1208 48
5 1056 42
6 1208 48
5 902 36
5 1056 42
6 1208 48
7 1350 54
Width
Not Recommended No Match
^
Pro Plus Pro Stiff Link Utility
Pin-on
Cat Pin
Grabber Pin-on
Cat Pin
Grabber Pin-on
ü ü ü ü ü ü ü ü
ü ü ü ü ü ü ü ü
ü^ ü^ ü^ ü^ ü^ ü^ ü^ ü^
ü^ ü^ ü^ ü^ ü^ ü^ ü^ ü^
ü ü ü ü ü ü ü ü
ü ü ü ü ü ü ü ü
ü^ ü^ ü^ ü^ ü^ ü^ ü^ ü^
ü^ ü^ ü^ ü^ ü^ ü^ ü^ ü^
ü ü ü ü ü ü ü ü
ü^ ü^ ü^ ü^ ü^
ü ü ü ü ü ü ü ü
ü ü ü ü ü ü ü ü
ü^ ü^ ü^ ü^ ü^ ü^ ü^ ü^
ü ü ü
ü ü ü ü
ü^ ü^ ü^
ü^ ü^
Cat Pin
Grabber Pin-on
Cat Pin
Grabbermm in
16
Page 17
320 Standard and Optional Equipment
Standard and Optional Equipment
Standard and optional equipment may vary. Consult your Cat dealer for details.
CAB
ROPS, standard sound suppression
High-resolution 254 mm (10 in) LCD
touchscreen monitor
High-resolution 254 mm (10 in) LCD
touchscreen monitor + additional
monitor (for Cat Grade with Advanced
2D or Cat Grade with 3D)
Auto bi-level air conditioner
Jog dial and shortcut keys for
monitorcontrol
Keyless push-to-start engine control
Height-adjustable console, innite
withno tool
Heated seat with air-adjustable
suspension
51 mm (2 in) seat belt
Tilt-up left-side console
®
Bluetooth
withUSBports
12V DC outlets
Document storage
Cup and bottle holders
Rear head storage net and lunchbox
storage net
Openable two-piece front window
Upper radial wiper with washer
Openable polycarbonate skylight hatch
LED dome light
Floor welcome light
Roller front sunscreen
Roller rear sunscreen
Washable oor mat
Beacon ready
Straight travel pedal
integrated radio
Standard Optional
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ENGINE
Three selectable power modes
Auto engine speed control
Auto engine idle shutdown
Work up to 3000 m (9,842.5 ft) above sea
level without engine power de-rating
52° C (125° F) high-ambient cooling
capacity
Cold starting capability for
–32° C (–25° F)
Double element air lter
withintegratedpre-cleaner
Electric fuel priming pump
Electric cooling fans
withauto-reversefunction
Biodiesel capability up to B20
HYDRAULIC SYSTEM
Boom and stick regeneration circuits
Boom and stick lowering check valves
Electronic main control valve
Auto hydraulic oil warm up
Auto two-speed travel
Boom and stick drift reduction valve
Element type main hydraulic lter
Slider joysticks
Tandem type electronic main pump
Hammer return lter circuit
Advanced Tool Control (two pump,
one/two way high-pressure ow)
Medium pressure auxiliary circuit
Quick coupler circuit for Cat Pin Grabber
Fine swing control
Standard Optional
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
(continued on next page)
17
Page 18
320 Standard and Optional Equipment
Standard and Optional Equipment (continued)
Standard and optional equipment may vary. Consult your Cat dealer for details.
UNDERCARRIAGE AND STRUCTURES
790 mm (31 in) triple grouser track shoes
Tie-down points on base frame
Segmented track guiding guards
Full-length track guiding guards
Bottom guards
HD bottom guards
Swivel guard
Travel motor guards
HD travel motor guards
Grease lubricated track links
4200 kg (9,300 lb) counterweight
4700 kg (10,400 lb) counterweight
forSuper Long Reach
Semi-HD swing frame
Base frame with HD track rollers
andstandard carrier rollers
Storage tray in pump compartment
BOOM, STICKS AND LINKAGES
5.7 m (18'8") Reach boom
5.7 m (18'8") HD Reach boom
2.9 m (9'6") Reach stick
2.9 m (9'6") HD Reach Thumb
Readystick
Super Long Reach 8.85 m (29'0") boom
Super Long Reach 6.28 m (20'7") stick
Bucket linkage, B1-family with
liftingeye,Cat Grade
Bucket linkage, A-family with
liftingeye,SLR
ELECTRICAL SYSTEM
1,000 CCA maintenance-free
batteries(×2)
Centralized electrical disconnect switch
Programmable time-delay LED
workinglights
LED chassis light, LH and RH boom
lights for Reach and SLR, cab lights
Premium surround lighting package
Standard Optional
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
CAT TECHNOLOGY
Cat Product Link™
Work tool recognition
Work tool tracking*
Laser catcher
Cat Grade with 2D and offset memory
(not available on SLR)
Cat Grade with Advanced 2D
(notavailable on SLR)
Cat Grade with 3D connectivity
(notavailable on SLR):
– Virtual Reference Station**
– Internet Base Service Station**
– Trimble Connected Community**
Cat Assist:
– Grade Assist
– Boom Assist
– Bucket Assist
– Swing Assist
– Lift Assist
Cat Payload:
– Static weigh
– Semiautomatic calibration
– Payload/cycle information
– USB reporting capability
2D E-Fence:
– E-ceiling
– E-oor
– E-swing
– E-wall
– E-cab avoidance
Auto hammer stop
Auto Dig Boost
Remote Services capability
*Paired with PL161 attachment locator.
**Subscription required.
Standard Optional
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
(continued on next page)
18
Page 19
320 Standard and Optional Equipment
Standard and Optional Equipment (continued)
Standard and optional equipment may vary. Consult your Cat dealer for details.
SERVICE AND MAINTENANCE
Scheduled Oil Sampling (S·O·S
QuickEvac™ maintenance ready
Grouped location for engine oil
and fuel lters
Ground-level second dipstick for engine oil
Radiator screen
SM
) ports
Standard Optional
ü
ü
ü
ü
ü
SAFETY AND SECURITY
Cat Command remote control
Rearview and right-hand-sideview
cameras
360° visibility
Cat PL161 Attachment Locator
Neutral lever (lock out) for all controls
Anti-skid plate and countersunk bolts
onservice platform
Ground-level accessible secondary engine
shutoff switch in cab
RH handrail and handhold
(ISO 2867:2011 compliant)
Travel alarm
Standard Optional
ü
ü
ü
ü
ü
ü
ü
ü
ü
19
Page 20
320 Attachments
Dealer Installed Kit and Attachments
Attachments may vary. Consult your Cat dealer for details.
CAB
• Radial lower wiper
• LH/RH electrical pedal for tool control
• Dual exit rear window kit
• Rain protector plus cab light cover
• 75 mm (3") retractable seat belt
SAFETY AND SECURITY
• Bluetooth key fob
SERVICE AND MAINTENANCE
• Grease gun holder
ELECTRICAL
• Jump start wiring
GUARDS
• Side rubber bumper
• Falling object guard system (not compatible
with cab light cover, rain protector)
• Mesh guard full front (not compatible with
cab light cover, rain protector)
• Mesh guard lower half front
• Full protecting vandalism guard
For more complete information on Cat products, dealer services, andindustry solutions, visit us on the web
atwww.cat.com
© 2020 Caterpillar
All rights reserved
Materials and specications are subject to change without notice. Featured machines in photos may include
additional equipment. See your Cat dealer for available options.
CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Corporate Yellow,” the
“PowerEdge” and Cat “Modern Hex” trade dress as well as corporate and product identity used herein,
aretrademarks ofCaterpillar and may not be used without permission.
AEXQ2161-04 (11-2020)
Replaces AEXQ2161-03
Build Number: 07D
(North America)
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