HomeMachines/EquipmentNew Machines308 CR (Fixed Boom) Mini Hydraulic Excavator

308 CR (Fixed Boom) Mini Hydraulic Excavator

Product Description

The Cat® 308 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

Specifications
Us
Metric
Engine
Net Power
69 hp
51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp
51.2 kW
Gross Power - ISO 14396
74.3 hp
55.4 kW
Bore
3.5 in
90 mm
Stroke
4.3 in
110 mm
Displacement
171 in³
2.8 l
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Weights
Operating Weight
18659 lb
8462 kg
Minimum Operating Weight with Cab*
16707 lb
7577 kg
Maximum Operating Weight with Cab**
18659 lb
8462 kg
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Weight Increase from Minimum Configuration
Counterweight
551 lb
250 kg
Long Stick
187 lb
85 kg
Steel Tracks with Pads
662 lb
300 kg
Travel System
Travel Speed - High
3 mile/h
4.9 km/h
Travel Speed - Low
1.8 mile/h
3 km/h
Maximum Traction Force - High Speed
6587 lbf
29.3 kN
Maximum Traction Force - Low Speed
15962 lbf
71 kN
Ground Pressure - Minimum Weight
4.8 psi
33.2 kPa
Ground Pressure - Maximum Weight
5.4 psi
37.9 kPa
Gradeability - Maximum
30 degrees
Service Refill Capacities
Cooling System
2.6 gal (US)
10 l
Engine Oil
2.3 gal (US)
8.8 l
Fuel Tank
38 gal (US)
145 l
Hydraulic Tank
14 gal (US)
53 l
Hydraulic System
29 gal (US)
110 l
Hydraulic System
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm
167 L/min
Operating Pressure - Equipment
4134 psi
285 bar
Operating Pressure - Travel
4134 psi
285 bar
Operating Pressure - Swing
3626 psi
250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm
131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm
33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi
285 bar
Digging Force - Stick - Standard
9285 lbf
41.3 kN
Digging Force - Stick - Long
8250 lbf
36.7 kN
Digging Force - Bucket
13241 lbf
58.9 kN
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Swing System
Machine Swing Speed
10 r/min
10 r/min
Blade
Width - Standard
90.6 in
2300 mm
Width - Wide
96.5 in
2450 mm
Height
17 in
431 mm
Certification - Cab
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dimensions - Standard Stick
Dig Depth
163 in
4145 mm
Vertical Wall
142 in
3600 mm
Maximum Reach - Ground Level
246 in
6246 mm
Maximum Reach
252 in
6391 mm
Maximum Dig Height
291 in
7392 mm
Maximum Dump Clearance
207 in
5255 mm
Boom In Reach
66 in
1681 mm
Tail Swing with Counterweight
56 in
1425 mm
Tail Swing without Counterweight
51 in
1290 mm
Maximum Blade Height
14.6 in
370 mm
Maximum Blade Depth
16 in
407 mm
Height - Boom Transport - No Tools*
97 in
2466 mm
Height - Boom Working - With Tools**
105 in
2671 mm
Cab Height
100 in
2541 mm
Swing Bearing - Height
30 in
756 mm
O/A Undercarriage Length
113 in
2880 mm
Overall Shipping Length - with Counterweight
228 in
5780 mm
Overall Shipping Length - without Counterweight
222 in
5645 mm
Track Belt/Shoe Width
18 in
450 mm
O/A Track Width
91 in
2300 mm
Ground Clearance
14 in
350 mm
Stick Length
66 in
1665 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (1)
**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.
Dimensions - Long Stick
Dig Depth
185 in
4687 mm
Vertical Wall
162 in
4110 mm
Maximum Reach - Ground Level
266 in
6766 mm
Maximum Reach
272 in
6900 mm
Maximum Dig Height
307 in
7809 mm
Maximum Dump Clearance
223 in
5672 mm
Boom In Reach
89 in
2250 mm
Tail Swing with Counterweight
56 in
1425 mm
Tail Swing without Counterweight
51 in
1290 mm
Maximum Blade Height
14.6 in
370 mm
Maximum Blade Depth
16 in
407 mm
Height - Boom Transport - No Tools*
100 in
2540 mm
Height - Boom Working - With Tools**
121 in
3080 mm
Cab Height
100 in
2541 mm
Swing Bearing - Height
30 in
756 mm
O/A Undercarriage Length
113 in
2880 mm
Overall Shipping Length - with Counterweight
5800 mm (228 in)***
Overall Shipping Length - without Counterweight
5665 mm (223 in)***
Track Belt/Shoe Width
18 in
450 mm
O/A Track Width
91 in
2300 mm
Ground Clearance
14 in
350 mm
Stick Length
87 in
2208 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Sound
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
99 dB(A)
Note
European Union Directive "2000/14/EC"
Sustainability
Recyclability
96%
Standard/Optional

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