308 CR Mini Hydraulic Excavator
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
Equipment
Product Brochures
Attachments
Units:
Engine
Net Power
69.5 HP
51.8 kW
Engine Model
Cat C3.3B
Stroke
4.7 in
120 mm
Bore
3.7 in
94 mm
Gross Power - SAE J1995
74.3 HP
55.4 kW
Displacement
203 in³
3.33 l
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
69.5 HP
51.8 kW
Weights
Operating Weight
20077 lb
9105 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.
Maximum Operating Weight with Cab**
20077 lb
9105 kg
Minimum Operating Weight with Cab*
18610 lb
8440 kg
Weight Increase from Minimum Configuration
Steel Tracks with Pads
752 lb
341 kg
Counterweight
552 lb
250 kg
Long Stick
146 lb
66 kg
Travel System
Maximum Traction Force - High Speed
6250 lb
27.8 kN
Ground Pressure - Maximum Weight
5.8 psi
39.8 kPa
Ground Pressure - Minimum Weight
5.4 psi
36.9 kPa
Travel Speed - High
3.2 mile/h
5.1 km/h
Travel Speed - Low
1.9 mile/h
3.1 km/h
Maximum Traction Force - Low Speed
15175 lb
67.5 kN
Gradeability - Maximum
30 degrees
Service Refill Capacities
Fuel Tank
39 gal (US)
147 l
Hydraulic System
29 gal (US)
110 l
Hydraulic Tank
14 gal (US)
53 l
Cooling System
2.6 gal (US)
10 l
Engine Oil
3 gal (US)
11.2 l
Hydraulic System
Digging Force - Bucket
13946 lb
62 kN
Operating Pressure - Travel
4134 psi
285 bar
Operating Pressure - Swing
3626 psi
250 bar
Operating Pressure - Equipment
4134 psi
285 bar
Digging Force - Stick - Long
8032 lb
35.7 kN
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Pump Flow at 2,400 rpm
44 gal/min
167 l/min
Digging Force - Stick - Standard
9509 lb
42.3 kN
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi
285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min
131 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min
33 l/min
Swing System
Machine Swing Speed
10.6 r/min
10.6 r/min
Boom Swing - Right
50 degrees
Blade
Height
17 in
431 mm
Width - Standard
90.6 in
2300 mm
Width - Wide
96.5 in
2450 mm
Certification - Cab
Top Guard
ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Sound
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
72 dB(A)
Note
European Union Directive "2000/14/EC"
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
99 dB(A)
Dimensions - Standard Stick
Cab Height
100 in
2541 mm
Vertical Wall
117.8 in
2991 mm
Boom In Reach
120.4 in
3059 mm
Tail Swing with Counterweight
62.4 in
1585 mm
Boom Swing - Right
36.8 in
935 mm
Track Belt/Shoe Width
17.7 in
450 mm
Maximum Reach
281.1 in
7141 mm
Stick Length
71.7 in
1820 mm
Maximum Blade Height
14.6 in
370 mm
Boom Swing - Left
23.8 in
604 mm
Maximum Blade Depth
16 in
407 mm
O/A Track Width
90.6 in
2300 mm
Maximum Dig Height
265.2 in
6736 mm
Maximum Dump Clearance
187.4 in
4760 mm
Maximum Reach - Ground Level
273.6 in
6949 mm
Tail Swing without Counterweight
57.1 in
1450 mm
O/A Undercarriage Length
113.4 in
2880 mm
Swing Bearing - Height
29.7 in
756 mm
Ground Clearance
13.8 in
350 mm
Dig Depth
161.7 in
4108 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight
264 in
6706 mm
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Overall Shipping Length - without Counterweight
258.8 in
6574 mm
Note (2)
***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**
104.7 in
2660 mm
Height - Boom Transport - No Tools*
95.7 in
2430 mm
Dimensions - Long Stick
Dig Depth
182.8 in
4643 mm
Boom Swing - Left
23.8 in
604 mm
Maximum Dig Height
277.1 in
7039 mm
Maximum Blade Height
14.6 in
370 mm
Track Belt/Shoe Width
17.7 in
450 mm
Cab Height
100 in
2541 mm
Tail Swing with Counterweight
62.4 in
1585 mm
O/A Undercarriage Length
113.4 in
2880 mm
Maximum Dump Clearance
199.7 in
5072 mm
Boom Swing - Right
36.8 in
935 mm
Maximum Blade Depth
16 in
407 mm
Ground Clearance
13.8 in
350 mm
Stick Length
92.8 in
2358 mm
Maximum Reach
300.7 in
7637 mm
Maximum Reach - Ground Level
293.7 in
7460 mm
Boom In Reach
126.6 in
3215 mm
Swing Bearing - Height
29.7 in
756 mm
O/A Track Width
90.6 in
2300 mm
Tail Swing without Counterweight
57.1 in
1450 mm
Vertical Wall
134 in
3404 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (2)
***With blade positioned at the rear of the machine.
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Height - Boom Transport - No Tools*
89 in
2260 mm
Height - Boom Working - With Tools**
120.1 in
3050 mm
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.
Swing System
Boom Swing - Left
60 degrees
Sustainability
Recyclability
96%
Standard Equipment
ENGINE
HYDRAULICS
OPERATOR ENVIRONMENT
UNDERCARRIAGE
BOOM, STICK AND LINKAGES
ELECTRICAL
OTHER
Brochures
