308 CR Mini Hydraulic Excavator

Overview

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.

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	69.5 hp
Engine Model	Cat C3.3B
Stroke	4.7 in
Bore	3.7 in
Gross Power - SAE J1995:2014	74.3 hp
Displacement	203 in³
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269	69.5 hp

Operating Weight	18493 lb
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**	18493 lb
Minimum Operating Weight with Cab*	16542 lb

Maximum Traction Force - High Speed	6250 lbf
Ground Pressure - Maximum Weight	5.5 psi
Ground Pressure - Minimum Weight	4.9 psi
Travel Speed - High	3.2 mile/h
Travel Speed - Low	1.9 mile/h
Maximum Traction Force - Low Speed	15175 lbf
Gradeability - Maximum	30 degrees

Digging Force - Bucket	13946 lbf
Operating Pressure - Travel	4134 psi
Operating Pressure - Swing	3626 psi
Operating Pressure - Equipment	4134 psi
Digging Force - Stick - Long	8032 lbf
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 gpm
Digging Force - Stick - Standard	9509 lbf
Maximum Auxiliary Circuit - Primary - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump	35 gpm
Maximum Auxiliary Circuit - Secondary - Flow at Pump	9 gpm

Top Guard	ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008

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

Cab Height	100 in
Vertical Wall	117.8 in
Boom In Reach	120.4 in
Tail Swing with Counterweight	62.4 in
Boom Swing - Right	36.8 in
Track Belt/Shoe Width	17.7 in
Maximum Reach	281.1 in
Stick Length	71.7 in
Maximum Blade Height	14.6 in
Boom Swing - Left	23.8 in
Maximum Blade Depth	16 in
O/A Track Width	90.6 in
Maximum Dig Height	265.2 in
Maximum Dump Clearance	187.4 in
Maximum Reach - Ground Level	273.6 in
Tail Swing without Counterweight	57.1 in
O/A Undercarriage Length	113.4 in
Swing Bearing - Height	29.7 in
Ground Clearance	13.8 in
Dig Depth	161.7 in
Note	*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight	264 in
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
Note (2)	***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**	104.7 in
Height - Boom Transport - No Tools*	95.7 in

Dig Depth	182.8 in
Boom Swing - Left	23.8 in
Maximum Dig Height	277.1 in
Maximum Blade Height	14.6 in
Track Belt/Shoe Width	17.7 in
Cab Height	100 in
Tail Swing with Counterweight	62.4 in
O/A Undercarriage Length	113.4 in
Maximum Dump Clearance	199.7 in
Boom Swing - Right	36.8 in
Maximum Blade Depth	16 in
Ground Clearance	13.8 in
Stick Length	92.8 in
Maximum Reach	300.7 in
Maximum Reach - Ground Level	293.7 in
Boom In Reach	126.6 in
Swing Bearing - Height	29.7 in
O/A Track Width	90.6 in
Tail Swing without Counterweight	57.1 in
Vertical Wall	134 in
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
Height - Boom Working - With Tools**	120.1 in
Overall Shipping Length - without Counterweight	6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight	6872 mm (270.6 in)***

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.