CAT 320 Hydraulic Excavator User Manual

320

Hydraulic Excavator

Technical Specifications

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

Table of Contents

	Specifications . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 2
	Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . .2	Major Component Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .3
	Swing Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 2. . . .	.Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .4
	Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . .2	Working Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .5. . . . . . .
	Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 2. . .	Reach Boom Lift Capacities – Counterweight: 4..2 mt (9,300 lb) . . .	. . .7.
	Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 2. . . . .	HD. . Reach. . . . . Boom Lift Capacities – Counterweight: 4..7 mt (10,400 lb)	. . .8
	Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . .2. . . .	Super. . . . . Long Reach Boom Lift Capacities –
	Service Refill Capacities	2	Counterweight: 4..7 mt (10,400 lb) . . . . . . . . . . . . . . . . . . . . . . . .	. . . 9. . .
			Bucket Specifications and Compatibility	11
	Standards	2
			Attachments Offering Guide	13
	Sound Performance	2
			Thumb Specifications	16
	Operating Weight and Ground Pressure	3
	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 in3

•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 flywheel 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 m3 (1.56 yd3) bucket

790 mm (31 in) triple grouser shoes, 4.2 t (10.400 lb) counterweight.

Track

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 –	205 kN	45,996 lbf
Long Undercarriage

Hydraulic System

Main System – Maximum Flow –	429 L/min	113 gal/min
Implement	(214.5 ×	(56.5 ×
	2 pumps)	2 pumps)
Maximum Pressure – Equipment –	35 000 kPa	5,075 psi
Normal
Maximum Pressure – Equipment –	38 000 kPa	5,510 psi
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

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

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 m3 (1.56 yd3) HD Bucket	22 500 kg	49,600 lb	35.5 kPa	5.2 psi
4.7 mt (10,400 lb) Counterweight + Base Machine
	HD Reach Boom + HD R2.9 (9'6") Stick + 1.19 m3 (1.56 yd3) HD Bucket	24 300 kg	53,600 lb	38.4 kPa	5.6 psi
	SLR Boom + SLR Stick + 0.53 m3 (0.69 yd3) GD Bucket	23 900 kg	52,700 lb	37.8 kPa	5.5 psi

All operating weights include a 90% fuel tank with 75 kg (165 lb) operator..

Major Component Weights

		kg	lb
Base Machine (with 4.2 mt [9,300 lb] counterweight, semi-HD swing frame, standard base frame with		14 800	32,600
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		16 000	35,300
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	3370	7,400
	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 m3 (1.56 yd3) HD	960	2,100
	0.57 m3 (0.75 yd3) Ditch Cleaning	390	900
Quick Coupler:
	Pin Grabber QC	390	900

3

320 Hydraulic Excavator Specifications

Dimensions

All dimensions are approximate and may vary depending on bucket selection..

3		4
		1
	6	5
9		8
10		7
		2

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")
1	Machine Height:
		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"
2	Machine Length:
		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"
3	Upperframe Width without Walkways		2780 mm	9'1"	2780 mm	9'1"
4	Tail Swing Radius		2830 mm	9'3"	2830 mm	9'3"
5	Counterweight Clearance		1050 mm	3'5"	1050 mm	3'5"
6	Ground Clearance		470 mm	1'7"	470 mm	1'7"
7	Track Length		4450 mm	14'7"	4450 mm	14'7"
8	Length to Center of Rollers		3650 mm	12'0"	3650 mm	12'0"
9	Track Gauge		2380 mm	7'9"	2380 mm	7'9"
10	Undercarriage Width:
		790 mm (31 in) Shoes	3170 mm	10'5"	3170 mm	10'5"
Bucket Type				HD	Ditch Cleaning (DC)
Bucket Capacity			1.14 m3	1.50 yd3	0.57 m3	0.75 yd3
Bucket Tip Radius			1470 mm	4'10"	1070 mm	3'6"

4

320 Hydraulic Excavator Specifications

Working Ranges

All dimensions are approximate and may vary depending on bucket selection..

	ft	m
	35	11
		10
	30	9
	25	8
		7
	20	6
	15	5	3
		4
	10	3		4
	5	2
		1		5
	0	0
		1		2
	5			R2.9B1 (9'6")
		2
	10	3	7	6
			1
		4
	15	5
	20	6
		7

11

10

9

8

7

6

5

4

3

2

1

0

–1

m

35

30

25

20

15

10

5

0

ft

Boom Option

HD Reach/Reach Boom

5.7 m (18'8")

Stick Option

HD TR Reach/Reach Stick

R2.9B1 (9'6")

1

Maximum Digging Depth

6620 mm

21'9"

2

Maximum Reach at Ground Line

9760 mm

32'0"

3

Maximum Cutting Height

9330 mm

30'7"

4

Maximum Loading Height

6590 mm

21'7"

5

Minimum Loading Height

2270 mm

7'5"

6

Maximum Depth Cut for 2440 mm (8'0") Level Bottom

6440 mm

21'2"

7

Maximum Vertical Wall Digging Depth

5360 mm

17'7"

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 m3

1.50 yd3

Bucket Tip Radius

1470 mm

4'10"

5

320 Hydraulic Excavator Specifications

Working Ranges

All dimensions are approximate and may vary depending on bucket selection..

ft	m
45	14
	13
40	12
35	11
	10
30	9
25	8
	7		3
20	6									4
	5
15
	4
10	3
5	2
	1
0	0
5	1													2
	2
10	3
15	4																								6.28A (20'7")
	5
			1		7														6
20	6
25	7
	8
30	9
35	10
	11
40	12	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0	–1	–2	–3	m
	20
		65	60		55	50		45	40		35	30		25	20	15		10		5	0		–5		ft

Boom Option			SLR Boom
		8.85 m (29'0")
Stick Option			SLR Stick
		6.28A (20'7")
1	Maximum Digging Depth	11 540 mm	37'10"
2	Maximum Reach at Ground Line	15 570 mm	51'1"
3	Maximum Cutting Height	13 540 mm	44'5"
4	Maximum Loading Height	11 440 mm	37'6"
5	Minimum Loading Height	2240 mm	7'4"
6	Maximum Depth Cut for 2440 mm (8'0") Level Bottom	11 440 mm	37'6"
7	Maximum Vertical Wall Digging Depth	11 020 mm	36'2"
Bucket Digging Force (ISO)		62 kN	13,841 lbf
Stick Digging Force (ISO)		49 kN	10,966 lbf
Bucket Type		Ditch Cleaning (DC)
Bucket Capacity		0.57 m3	0.75 yd3
Bucket Tip Radius		1070 mm	3'6"

6