306 CR Mini Hydraulic Excavator
The Cat® 306 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
55.9 hp
41.7 kW
Gross Power - ISO 14396
57.9 hp
43.2 kW
Displacement
148 in³
2.43 l
Bore
3.4 in
87 mm
Stroke
4 in
102.4 mm
Engine Model
Cat C2.4 Turbo
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
55.9 hp
41.7 kW
Weights
Operating Weight
15766 lb
7150 kg
Minimum Operating Weight with Canopy*
14134 lb
6410 kg
Maximum Operating Weight with Canopy**
15633 lb
7090 kg
Note (2)
**Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket.
Maximum Operating Weight with Cab**
15766 lb
7150 kg
Minimum Operating Weight with Cab*
14266 lb
6470 kg
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
Weight Increase from Minimum Configuration
Counterweight
551 lb
250 kg
Long Stick
97 lb
44 kg
Steel Tracks with Pads
827 lb
375 kg
Angle Blade
225 lb
102 kg
XTC Carriage (no tool)
141 lb
64 kg
Travel System
Ground Pressure - Minimum Weight
5.1 psi
35.4 kPa
Ground Pressure - Maximum Weight
5.7 psi
39.1 kPa
Gradeability - Maximum
30 degrees
Maximum Traction Force - High Speed
6969 lbf
31 kN
Maximum Traction Force - Low Speed
12589 lbf
56 kN
Travel Speed - High
3.1 mile/h
5 km/h
Travel Speed - Low
1.7 mile/h
2.8 km/h
Service Refill Capacities
Cooling System
2.6 gal (US)
10 l
Hydraulic System
27.5 gal (US)
104 l
Hydraulic Tank
14 gal (US)
53 l
Engine Oil
2.1 gal (US)
8 l
Fuel Tank
34.3 gal (US)
130 l
Hydraulic System
Operating Pressure - Travel
3553 psi
24500 kPa
Auxiliary Circuit - Primary - Flow
24 gal/min
90 l/min
Digging Force - Bucket
11578 lbf
51.5 kN
Auxiliary Circuit - Primary - Pressure
3553 psi
24500 kPa
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Flow
9 gal/min
33 l/min
Operating Pressure - Equipment
3553 psi
24500 kPa
Auxiliary Circuit - Secondary - Pressure
3553 psi
24500 kPa
Digging Force - Stick - Standard
6632 lbf
29.5 kN
Operating Pressure - Swing
3263 psi
22500 kPa
Digging Force - Stick - Long
5957 lbf
26.5 kN
Pump Flow at 2,400 rpm
40 gal/min
151 l/min
Swing System
Boom Swing - Right
65 degrees
Boom Swing - Left
60 degrees
Machine Swing Speed
11 r/min
11 r/min
Blade
Straight Blade Width
78 in
1980 mm
Angle Blade Width
78 in
1980 mm
Straight Blade Height
15.4 in
390 mm
Angle Blade Height
15.7 in
400 mm
Certification - Cab
Top Guard
ISO 10262:1998 (Level II)
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)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
99 dB(A)
Note
European Union Directive “2000/14/EC”
Dimensions - Standard Stick
Track Belt/Shoe Width
16 in
400 mm
Maximum Reach
248 in
6295 mm
Stick Length
62 in
1580 mm
Vertical Wall
107 in
2710 mm
Swing Bearing - Height
27 in
672 mm
Maximum Reach - Ground Level
241 in
6130 mm
Maximum Blade Height
16 in
415 mm
Ground Clearance
12 in
306 mm
Boom In Reach
98 in
2485 mm
Boom Swing - Right
36 in
910 mm
Transport Height
69 in
1755 mm
Tail Swing with Counterweight
58 in
1475 mm
Cab Height
100 in
2545 mm
Width over Upper House
77 in
1950 mm
Maximum Dump Clearance
170 in
4325 mm
Tail Swing without Counterweight
53 in
1350 mm
Boom Swing - Left
29 in
735 mm
O/A Undercarriage Length
102 in
2580 mm
Maximum Dig Height
230 in
5835 mm
Maximum Blade Depth
24 in
600 mm
O/A Track Width
78 in
1980 mm
Dig Depth
146 in
3710 mm
O/A Shipping Length
235 in
5975 mm
Dimensions - Long Stick
Dig Depth
162 in
4110 mm
Maximum Blade Height
16 in
415 mm
O/A Track Width
78 in
1980 mm
Track Belt/Shoe Width
16 in
400 mm
Tail Swing with Counterweight
58 in
1475 mm
Vertical Wall
125 in
3165 mm
Boom In Reach
117 in
2960 mm
Maximum Blade Depth
24 in
600 mm
Maximum Dig Height
241 in
6130 mm
Transport Height
95 in
2410 mm
Stick Length
78 in
1980 mm
Ground Clearance
12 in
306 mm
Swing Bearing - Height
27 in
672 mm
Width over Upper House
77 in
1950 mm
O/A Undercarriage Length
102 in
2580 mm
O/A Shipping Length
234 in
5950 mm
Cab Height
100 in
2545 mm
Maximum Reach
263 in
6685 mm
Boom Swing - Left
29 in
735 mm
Tail Swing without Counterweight
53 in
1350 mm
Boom Swing - Right
36 in
910 mm
Maximum Dump Clearance
182 in
4610 mm
Maximum Reach - Ground Level
257 in
6535 mm
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1287). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.
Sustainability
Recyclability
96%
Standard Equipment
OPERATOR ENVIRONMENT – CAB AND CANOPY
OPERATOR ENVIRONMENT – CAB ONLY
UNDERCARRIAGE
BOOM, STICK AND LINKAGES
ELECTRICAL
OTHER
Brochures
