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.
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Engine
Engine Model
Cat C2.4 Turbo
Cat C2.4 Turbo
Net Power
55.9 HP
41.7 kW
Gross Power - ISO 14396
57.9 HP
43.2 kW
Displacement
148.0 in³
2.43 l
Bore
3.4 in
87.0 mm
Stroke
4.0 in
102.4 mm
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
15766.0 lb
7150.0 kg
Minimum Operating Weight with Canopy*
14134.0 lb
6410.0 kg
Maximum Operating Weight with Canopy**
15633.0 lb
7090.0 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 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**
15766.0 lb
7150.0 kg
Minimum Operating Weight with Cab*
14266.0 lb
6470.0 kg
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
Weight Increase from Minimum Configuration
Counterweight
551.0 lb
250.0 kg
Long Stick
97.0 lb
44.0 kg
Steel Tracks with Pads
827.0 lb
375.0 kg
Angle Blade
225.0 lb
102.0 kg
XTC Carriage (no tool)
141.0 lb
64.0 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
30 degrees
Maximum Traction Force - High Speed
6969.0 lbf
31.0 kN
Maximum Traction Force - Low Speed
12589.0 lbf
56.0 kN
Travel Speed - High
3.1 mile/h
5.0 km/h
Travel Speed - Low
1.7 mile/h
2.8 km/h
Service Refill Capacities
Cooling System
2.6 gal (US)
10.0 l
Hydraulic System
27.5 gal (US)
104.0 l
Hydraulic Tank
14.0 gal (US)
53.0 l
Engine Oil
2.1 gal (US)
8.0 l
Fuel Tank
34.3 gal (US)
130.0 l
Hydraulic System
Operating Pressure - Travel
3553.0 psi
24500.0 kPa
Auxiliary Circuit - Primary - Flow
24.0 gal/min
90.0 l/min
Digging Force - Bucket
11578.0 lbf
51.5 kN
Auxiliary Circuit - Primary - Pressure
3553.0 psi
24500.0 kPa
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Flow
9.0 gal/min
33.0 l/min
Operating Pressure - Equipment
3553.0 psi
24500.0 kPa
Auxiliary Circuit - Secondary - Pressure
3553.0 psi
24500.0 kPa
Digging Force - Stick - Standard
6632.0 lbf
29.5 kN
Operating Pressure - Swing
3263.0 psi
22500.0 kPa
Digging Force - Stick - Long
5957.0 lbf
26.5 kN
Pump Flow at 2,400 rpm
40.0 gal/min
151.0 l/min
Swing System
Boom Swing - Right
65 degrees
65 degrees
Boom Swing - Left
60 degrees
60 degrees
Machine Swing Speed
11.0 r/min
11.0 r/min
Blade
Straight Blade Width
78.0 in
1980.0 mm
Angle Blade Width
78.0 in
1980.0 mm
Straight Blade Height
15.4 in
390.0 mm
Angle Blade Height
15.7 in
400.0 mm
Certification - Cab
Top Guard
ISO 10262:1998 (Level II)
ISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
ISO 12117:1997
Sound
Operator Sound Pressure (ISO 6396:2008)
72.0 dB(A)
72.0 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99.0 dB(A)
99.0 dB(A)
Note
European Union Directive “2000/14/EC”
European Union Directive “2000/14/EC”
Dimensions - Standard Stick
Track Belt/Shoe Width
16.0 in
400.0 mm
Maximum Reach
248.0 in
6295.0 mm
Stick Length
62.0 in
1580.0 mm
Vertical Wall
107.0 in
2710.0 mm
Swing Bearing - Height
27.0 in
672.0 mm
Maximum Reach - Ground Level
241.0 in
6130.0 mm
Maximum Blade Height
16.0 in
415.0 mm
Ground Clearance
12.0 in
306.0 mm
Boom In Reach
98.0 in
2485.0 mm
Boom Swing - Right
36.0 in
910.0 mm
Transport Height
69.0 in
1755.0 mm
Tail Swing with Counterweight
58.0 in
1475.0 mm
Cab Height
100.0 in
2545.0 mm
Width over Upper House
77.0 in
1950.0 mm
Maximum Dump Clearance
170.0 in
4325.0 mm
Tail Swing without Counterweight
53.0 in
1350.0 mm
Boom Swing - Left
29.0 in
735.0 mm
O/A Undercarriage Length
102.0 in
2580.0 mm
Maximum Dig Height
230.0 in
5835.0 mm
Maximum Blade Depth
24.0 in
600.0 mm
O/A Track Width
78.0 in
1980.0 mm
Dig Depth
146.0 in
3710.0 mm
O/A Shipping Length
235.0 in
5975.0 mm
Dimensions - Long Stick
Maximum Blade Height
16.0 in
415.0 mm
O/A Track Width
78.0 in
1980.0 mm
Track Belt/Shoe Width
16.0 in
400.0 mm
Tail Swing with Counterweight
58.0 in
1475.0 mm
Vertical Wall
125.0 in
3165.0 mm
Boom In Reach
117.0 in
2960.0 mm
Maximum Blade Depth
24.0 in
600.0 mm
Maximum Dig Height
241.0 in
6130.0 mm
Transport Height
95.0 in
2410.0 mm
Stick Length
78.0 in
1980.0 mm
Ground Clearance
12.0 in
306.0 mm
Swing Bearing - Height
27.0 in
672.0 mm
Width over Upper House
77.0 in
1950.0 mm
O/A Undercarriage Length
102.0 in
2580.0 mm
O/A Shipping Length
234.0 in
5950.0 mm
Dig Depth
162.0 in
4110.0 mm
Cab Height
100.0 in
2545.0 mm
Maximum Reach
263.0 in
6685.0 mm
Boom Swing - Left
29.0 in
735.0 mm
Tail Swing without Counterweight
53.0 in
1350.0 mm
Boom Swing - Right
36.0 in
910.0 mm
Maximum Dump Clearance
182.0 in
4610.0 mm
Maximum Reach - Ground Level
257.0 in
6535.0 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.
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.