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320 GC
Technical Specifications
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Technical Specifications
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Technical Specifications
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Cat 320 GC Technical Specifications

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Page 1
320 GC
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
Attachments Offering Guide:
Standard and Optional Equipment ............................................................................8
Dealer Installed Kit and Attachments ........................................................................10
Page 2
320 GC Hydraulic Excavator Specifications
Engine
Engine Model Cat® C4.4
Net Power (ISO 9249) 107 kW 143 hp
Engine Power (ISO 14396) 108 kW 145 hp
Bore 105 mm 4 in
Stroke 127 mm 5 in
Displacement 4.4 L 269 in
• The 320 GC meets China Nonroad Stage III 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 advertised is the power available at the ywheel when the engine is equipped with fan, air intake system, exhaust system and alternator.
• Rated speed at 2,000 rpm.
Swing Mechanism
Swing Speed 11.3 rpm
Maximum Swing Torque 74.4 kN·m 54,900 lbf-ft
Weights
Operating Weight 19 800 kg 43,700 lb
• Reach boom, R2.9 (9'6") stick, GD 1.0 m (1.31 yd) bucket and 600 mm (24") triple grouser shoes, 3.7 mt (8,200 lb) counterweight.
Track
Standard Track Shoes Width 600 mm 24 in
Number of Shoes (each side) 45
Number of Track Rollers (each side) 7
Number of Carrier Rollers (each side) 2
Drive
Gradeability 35°/70%
Maximum Travel Speed 5.7 km/h 3.5 mph
Maximum Drawbar Pull 206 kN 46,311 lbf
Hydraulic System
Main System – Maximum Flow – Implement
Maximum Pressure – Equipment 35 000 kPa 5,075 psi
Maximum Pressure – Travel 34 300 kPa 4,974 psi
Maximum Pressure – Swing 25 000 kPa 3,625 psi
Boom Cylinder – Bore 120 mm 5 in
Boom Cylinder – Stroke 1260 mm 50 in
Stick Cylinder – Bore 135 mm 5 in
Stick Cylinder – Stroke 1504 mm 59 in
Bucket Cylinder – Bore 115 mm 5 in
Bucket Cylinder – Stroke 1104 mm 43 in
429 L/min (215 × 2pumps)
113 gal/min (57 × 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) 4 L 1.1 gal
Hydraulic System (including tank) 234 L 61.8 gal
Hydraulic Tank 115 L 30.4 gal
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 (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.
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Page 3
320 GC Hydraulic Excavator Specifications
Operating Weight and Ground Pressure
600 mm (24")
Triple Grouser Shoes
Weight Ground Pressure
3.7 mt (8,200 lb) Counterweight Base Machine
Reach Boom + R2.9 (9'6") Stick + 1.0 m (1.31 yd) GD Bucket 19 800 kg 43,700 lb 45.6 kPa 6.6 psi
All operating weights include a 90% fuel tank with 75 kg (165 lb) operator.
Major Component Weights
kg lb
Base Machine (with 3.7 mt [8,200 lb] counterweight, standard swing frame, standard base frame with standardtrack rollers and standard carrier rollers for standard undercarriage, without boom cylinders – does not include 90% fuel and 75 kg [165 lb] operator)
Track Shoes:
600 mm (24") Width, 8.5 mm (0.33") Thick Triple Grouser Track Shoes for Standard Undercarriage 2580 5,700
Two Boom Cylinders 340 750
Weight of 90% Fuel Tank and 75 kg (165 lb) Operator 310 680
Counterweight:
3.7 mt Counterweight 3700 8,200
Swing Frame:
Standard Swing Frame 1880 4,150
Undercarriage:
Standard Base Frame with Standard Track Rollers and Standard Carrier Rollers for Standard Undercarriage
Booms (including lines, pins, stick cylinder):
Reach Boom (5.7 m/18'8") 1690 3,700
Sticks (including lines, pins, bucket cylinder, bucket linkage):
Reach Stick (R2.9B1/9'6") 980 2,200
Buckets (without linkage):
1.0 m (1.31 yd) GD 730 1,600
13 200 29,100
4030 8,900
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Page 4
320 GC Hydraulic Excavator Specifications
43
2
Dimensions
All dimensions are approximate and may vary depending on bucket selection.
1
6
9
10
Boom Option Reach Boom
Stick Option Reach Stick
Machine Height:
1
Top of Cab Height 2960 mm 9'9"
Top of FOGS Height 3100 mm 10'2"
Handrails Height 2950 mm 9'8"
With Boom/Stick/Bucket Installed 3160 mm 10'4"
With Boom/Stick Installed 2910 mm 9'7"
With Boom Installed 2480 mm 8'2"
Machine Length:
2
With Boom/Stick/Bucket Installed 9530 mm 31'3"
With Boom/Stick Installed 9500 mm 31'2"
With Boom Installed 8450 mm 27'9"
Upperframe Width without Walkways 2780 mm 9'1"
3
Tail Swing Radius 2830 mm 9'3"
4
Counterweight Clearance 1050 mm 3'5"
5
Ground Clearance 470 mm 1'7"
6
Track Length 4070 mm 13'4"
7
Length to Center of Rollers 3270 mm 10'9"
8
Track Gauge 2200 mm 7'3"
9
Undercarriage Width:
10
600 mm (24") Shoes 2800 mm 9'2"
Bucket Type GD
Bucket Capacity 1.0 m 1.31 yd
Bucket Tip Radius 1580 mm 5'2"
8 7
5.7 m (18'8")
R2.9B1 (9'6")
5
4
Page 5
320 GC Hydraulic Excavator Specifications
Meters
R2.9B1 (9'6")
05101520253035 Feet
Feet
Working Ranges
All dimensions are approximate and may vary depending on bucket selection.
10
30
9
8
25
7
20
6
5
15
10
10
15
20
3
4
3
2
5
1
0
0
1
5
2
7
3
1
4
5
6
7
4
5
2
6
01234567891011 –1
Meters
Boom Option Reach Boom
5.7 m (18'8")
Stick Option Reach Stick
R2.9B1 (9'6")
Maximum Digging Depth 6710 mm 22'0"
1
Maximum Reach at Ground Line 9850 mm 32'4"
2
Maximum Cutting Height 9450 mm 31'0"
3
Maximum Loading Height 6500 mm 21'4"
4
Minimum Loading Height 2180 mm 7'2"
5
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 6540 mm 21'5"
6
Maximum Vertical Wall Digging Depth 6010 mm 19'8"
7
Bucket Digging Force (ISO) 129 kN 29,007 lbf
Stick Digging Force (ISO) 99 kN 22,301 lbf
Bucket Type GD
Bucket Capacity 1.0 m 1.31 yd
Bucket Tip Radius 1560 mm 5'1"
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Page 6
320 GC Hydraulic Excavator Specifications
Bucket Specifications and Compatibility
Width Capacity Weight Fill
Linkage
Pin-On (No Quick Coupler)
Utility Duty B 1150 46 0.90 1.18 725 1,599 100
B 1250 50 1.00 1.31 758 1,672 100
General Duty Excavation B 1150 46 0.90 1.18 758 1,671 100
B 1250 50 1.00 1.31 792 1,747 100 B 1400 56 1.14 1.49 858 1,891 100
Heavy Duty B 1050 43 1.00 1.31 884 1,948 100
B 1200 49 1.19 1.56 955 2,105 100 B 1350 54 1.38 1.81 1018 2,244 100
Severe Duty B 1100 43 1.00 1.31 965 2,128 90
B 1250 49 1.19 1.56 1063 2,343 90 General Duty 312 900 36 0.53 0.69 403 888 100 Ditch Cleaning 312 1200 48 0.57 0.74 386 851 100
Linkage
With Cat Pin Grabber Coupler
Utility Duty B 1150 46 0.90 1.18 725 1,599 100
B 1250 50 1.00 1.31 758 1,672 100 General Duty Excavation
Heavy Duty
Severe Duty B 1100 43 1.00 1.31 965 2,128 90
B 1150 46 0.90 1.18 758 1,671 100
B 1250 50 1.00 1.31 792 1,747 100
B 1400 56 1.14 1.49 858 1,891 100
B 1050 43 1.00 1.31 884 1,948 100
B 1200 49 1.19 1.56 955 2,105 100
B 1350 54 1.38 1.81 1018 2,244 100
B 1250 49 1.19 1.56 1063 2,343 90
mm in m
Width Capacity Weight Fill
mm in m
3
Maximum load with pin-on (payload + bucket) kg 2425
3
Maximum load with coupler (payload + bucket) kg 2006
3
yd
yd
kg lb % R2.9 (9'6")
3
kg lb % R2.9 (9'6")
3.7 mt (8,200 lb) Counterweight
Reach Boom
X
X
lb 5,346
3.7 mt (8,200 lb) Counterweight
Reach Boom
X
lb 4,423
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.
Maximum Material Density:
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
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Page 7
320 GC Hydraulic Excavator Specifications
Attachments Offering Guide – China
Not all Attachments are available in all regions. Consult your Cat dealer for congurations available in your region.
Match
ü
PIN-ON ATTACHMENTS
Counterweight 3.7 mt (8,200 lb) Boom Type Reach Stick Length 2.92 m (9'7")
Hydraulic Hammers H115 S
Compactors (Vibratory Plate) CVP110
CAT PIN GRABBER COUPLER ATTACHMENTS
Counterweight 3.7 mt (8,200 lb) Boom Type Reach Stick Length 2.92 m (9'7")
Hydraulic Hammers H115 S
Compactors (Vibratory Plate) CVP110
Working range front only
*
Allowed usage on machine less than 50%
†
H120 GC
H120 GC Side Mount
H120 S
H130 GC
H130 S
H120 GC
H120 GC Side Mount
H120 S
H130 S
No Match
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Attachments Offering Guide – Hong Kong, Taiwan
Not all Attachments are available in all regions. Consult your Cat dealer for congurations available in your region.
Match
ü
PIN-ON ATTACHMENTS
Counterweight 3.7 mt (8,200 lb) Boom Type Reach Stick Length 2.92 m (9'7")
Hydraulic Hammers H120 GC
Working range front only
*
Allowed usage on machine less than 50%
†
H120 GC S
H130 GC
H130 GC S
No Match
ü
ü
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Page 8
320 GC 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 203 mm (8") LCD touchscreen monitor
Auto bi-level air conditioner
Jog dial and shortcut keys for monitorcontrol
Keyless push-to-start engine control
Height-adjustable console, three steps with tool
Fixed left-side console
Mechanically adjustable seat suspension
51 mm (2") orange seat belt
®
Bluetooth (noUSB,aux port or microphone)
12V DC outlets
Document storage
Cup and bottle holders
Openable two-piece front window
Upper radial wiper with washer
Openable steel hatch
LED dome light
Roller front sunscreen
Roller rear sunscreen
Rear window emergency exit
Washable oor mat
Beacon ready
integrated radio
Standard Optional
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ENGINE
Two selectable power modes
Automatic 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 with integrated pre-cleaner
Electric fuel priming pump
Electric cooling fans with auto-reversefunction
Biodiesel capability up to B20
HYDRAULIC SYSTEM
Boom and stick regeneration circuits
Electronic main control valve
Auto warm up
Auto two-speed travel
Boom and stick drift reduction valve
Element type main hydraulic lter
Three button joysticks
Slider joysticks
Tandem type electronic main pump
Hammer return lter circuit
Tool Control (two pump, one/two way high-pressure ow)
Basic Tool Control (one pump, one way high-pressure ow)
Quick coupler circuit for Cat Pin Grabber
Operating pattern lm (four way)
Standard Optional
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*Hong Kong and Taiwan only
(continued on next page)
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Page 9
320 GC Standard and Optional Equipment
Standard and Optional Equipment (continued)
Standard and optional equipment may vary. Consult your Cat dealer for details.
UNDERCARRIAGE AND STRUCTURES
600 mm (24") triple grouser track shoes
Tie-down points on base frame
Bottom guards
Travel motor guards
Grease lubricated track links
Center track guiding guards
3.7 mt (8,200 lb) counterweight
BOOM, STICKS AND LINKAGES
5.7 m (18'8") Reach boom
2.9 m (9'6") Reach stick
Bucket linkage, B1-family with or without lifting eye
ELECTRICAL SYSTEM
1,000 CCA maintenance-free batteries(×2)
Centralized electrical disconnect switch
Programmable time-delay LED workinglights
LED chassis light and LH boom light
RH boom light, cab lights
Standard Optional
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CAT TECHNOLOGY
Cat Product Link™
Auto hammer stop
SERVICE AND MAINTENANCE
SM
S·O·S
sampling ports
Grouped location for engine oil and fuel lters
Ground-level second dipstick for engineoil
Side entry to service platform
SAFETY AND SECURITY
Rearview camera and side RH mirror
Right-hand-sideview camera
Neutral lever (lock out) for all controls
Anti-skid plate and countersunk bolts onservice platform
Ground-level accessible secondary engine shutoff switch in cab
RH handrail and handhold (ISO 2867:2011 compliant)
Travel alarm
*Hong Kong and Taiwan only
Standard Optional
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9
Page 10
320 GC Attachments

Dealer Installed Kit and Attachments

Attachments may vary. Consult your Cat dealer for details.
CAB
• RH electrical pedal (Hong Kong, Taiwan)
• Polycarbonate roof hatch
SAFETY AND SECURITY
• Bluetooth receiver kit (Hong Kong, Taiwan)
SERVICE AND MAINTENANCE
• Grease gun holder
GUARDS
• FOGS (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
• Swivel guard
For more complete information on Cat products, dealer services, andindustry solutions, visit us on the web atwww.cat.com
© 2020 Caterpillar All rights reserved
Materials and specications 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 “PowerEdge” and Cat “Modern Hex” trade dress as well as corporate and product identity used herein, aretrademarks ofCaterpillar and may not be used without permission.
AEXQ2198-05 (08-2020)
Replaces AEXQ2198-04
Build Number: 07D
(China/Hong Kong/Taiwan)
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