306 CR Mini Hydraulic Excavator

Overview

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.

Cat Exclusives in a Mini Excavator

with improved fuel efficiency and longer service intervals

with customizable operator settings and improvements in lift, swing, travel and multifunction

Net Power	55.9 hp
Gross Power - ISO 14396	57.9 hp
Displacement	148 in³
Bore	3.4 in
Stroke	4 in
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

Operating Weight	15766 lb
Minimum Operating Weight with Canopy*	14134 lb
Maximum Operating Weight with Canopy**	15633 lb
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
Minimum Operating Weight with Cab*	14266 lb
Note (1)	*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

Ground Pressure - Minimum Weight	5.1 psi
Ground Pressure - Maximum Weight	5.7 psi
Gradeability - Maximum	30 degrees
Maximum Traction Force - High Speed	6969 lbf
Maximum Traction Force - Low Speed	12589 lbf
Travel Speed - High	3.1 mile/h
Travel Speed - Low	1.7 mile/h

Operating Pressure - Travel	3553 psi
Auxiliary Circuit - Primary - Flow	24 gpm
Digging Force - Bucket	11578 lbf
Auxiliary Circuit - Primary - Pressure	3553 psi
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Flow	9 gpm
Operating Pressure - Equipment	3553 psi
Auxiliary Circuit - Secondary - Pressure	3553 psi
Digging Force - Stick - Standard	6632 lbf
Operating Pressure - Swing	3263 psi
Digging Force - Stick - Long	5957 lbf
Pump Flow at 2,400 rpm	40 gpm

Top Guard	ISO 10262:1998 (Level II)
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997

Operator Sound Pressure (ISO 6396:2008)	72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	99 dB(A)
Note	European Union Directive “2000/14/EC”

Track Belt/Shoe Width	16 in
Maximum Reach	248 in
Stick Length	62 in
Vertical Wall	107 in
Swing Bearing - Height	27 in
Maximum Reach - Ground Level	241 in
Maximum Blade Height	16 in
Ground Clearance	12 in
Boom In Reach	98 in
Boom Swing - Right	36 in
Transport Height	69 in
Tail Swing with Counterweight	58 in
Cab Height	100 in
Width over Upper House	77 in
Maximum Dump Clearance	170 in
Tail Swing without Counterweight	53 in
Boom Swing - Left	29 in
O/A Undercarriage Length	102 in
Maximum Dig Height	230 in
Maximum Blade Depth	24 in
O/A Track Width	78 in
Dig Depth	146 in
O/A Shipping Length	235 in

Dig Depth	162 in
Maximum Blade Height	16 in
O/A Track Width	78 in
Track Belt/Shoe Width	16 in
Tail Swing with Counterweight	58 in
Vertical Wall	125 in
Boom In Reach	117 in
Maximum Blade Depth	24 in
Maximum Dig Height	241 in
Transport Height	95 in
Stick Length	78 in
Ground Clearance	12 in
Swing Bearing - Height	27 in
Width over Upper House	77 in
O/A Undercarriage Length	102 in
O/A Shipping Length	234 in
Cab Height	100 in
Maximum Reach	263 in
Boom Swing - Left	29 in
Tail Swing without Counterweight	53 in
Boom Swing - Right	36 in
Maximum Dump Clearance	182 in
Maximum Reach - Ground Level	257 in

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.