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320 Hydraulic Excavator
User Manual
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Table of contents
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CAT 320 Hydraulic Excavator User Manual

320
Hydraulic Excavator

Technical Specifications

Congurations and features may vary by region. Please consult your Cat® dealer for availability in your area.

Table of Contents

Specications ..............................................................................................2
Super Long Reach Boom Lift Capacities –
Counterweight: 4.7 mt (10,400 lb) ..............................9
Standard and Optional Equipment ...........................................................................17
Dealer Installed Kit and Attachments ........................................................................20
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 ofmanufacture.
• 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 790mm (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 × 2pumps)
35 000 kPa 5,075 psi
38 000 kPa 5,510 psi
113 gal/min (56.5 × 2pumps)
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
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 HDtrack rollers and standard carrier rollers for long undercarriage, without boom cylinder – does not include90% 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 75kg [165 lb] operator)
Track Shoes:
790 mm (31 in) Width, 10 mm (0.39 in) Thick Triple Grouser Track Shoes for Long Undercarriage withStep 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
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
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
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
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