309 CR Mini Hydraulic Excavator

309 CR Mini Hydraulic Excavator

Mini Excavators Inspired by Our Customers

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More Comfort – More Performance – More Versatility

4 Industry First Features

Cat Exclusives in a Mini Excavator
Up to 10% Lower Total Ownership Costs

with improved fuel efficiency and longer service intervals
Up to 20% More Performance

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

Engine

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

Specifications

Note	The 309 CR specifications are based on a machine configured with a Long (L) Undercarriage.

Weights

Maximum Operating Weight with Cab**	21091 lb
Minimum Operating Weight with Cab*	19735 lb
Note (1)	*Minimum Weight is based on steel 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.
Operating Weight	21091 lb

Dimensions - Long Stick

Boom In Reach	126.6 in
Boom Swing - Left	23.8 in
Boom Swing - Right	36.8 in
Cab Height	100 in
Dig Depth	182.8 in
Ground Clearance	14 in
Height - Boom Transport - No Tools*	89 in
Height - Boom Working - With Tools**	120.1 in
Maximum Blade Depth	26 in
Maximum Blade Height	16.1 in
Maximum Dig Height	277.1 in
Maximum Dump Clearance	199.7 in
Maximum Reach	300.7 in
Maximum Reach - Ground Level	293.7 in
Note	*Boom Height when stick is pinned in transport position with no attachments.
Note (1)	**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Note (2)	***With blade positioned at the rear of the machine.
O/A Track Width	97.2 in
O/A Undercarriage Length	126 in
Overall Shipping Length - with Counterweight	7052 mm (277.6 in)***
Overall Shipping Length - without Counterweight	7052 mm (277.6 in)***
Stick Length	92.8 in
Swing Bearing - Height	29.7 in
Tail Swing with Counterweight	62.4 in
Tail Swing without Counterweight	57.1 in
Track Belt/Shoe Width	17.7 in
Vertical Wall	134 in

Weight Increase from Minimum Configuration

Counterweight	552 lb
Long Stick	146 lb
Steel Tracks with Pads	728 lb

Travel System

Gradeability - Maximum	30 degrees
Ground Pressure - Maximum Weight	5.4 psi
Ground Pressure - Minimum Weight	5 psi
Maximum Traction Force - High Speed	6497 lb
Maximum Traction Force - Low Speed	19064 lb
Travel Speed - High	3.1 mile/h
Travel Speed - Low	1.6 mile/h

Service Refill Capacities

Cooling System	2.6 gal (US)
Engine Oil	3 gal (US)
Fuel Tank	39 gal (US)
Hydraulic System	29 gal (US)
Hydraulic Tank	14 gal (US)

Hydraulic System

Digging Force - Bucket	13943 lb
Digging Force - Stick - Long	8023 lb
Digging Force - Stick - Standard	9500 lb
Maximum Auxiliary Circuit - High Flow - Flow at Pump	37 gal/min
Maximum Auxiliary Circuit - High Flow - Pressure at Pump	4134 lbf/in
Maximum Auxiliary Circuit - Primary - Flow at Pump	35 gal/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Secondary - Flow at Pump	9 gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump	4134 psi
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment	4134 psi
Operating Pressure - Swing	3626 psi
Operating Pressure - Travel	4134 psi
Pump Flow at 2,400 rpm	62 gal/min
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump

Swing System

Boom Swing - Left	60 degrees
Boom Swing - Right	50 degrees
Machine Swing Speed	10.6 r/min

Blade

Height	17 in
Width - Standard	97 in
Width - Wide	104 in

Certification - Cab

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

Sound

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

Dimensions - Standard Stick

Boom In Reach	120.4 in
Boom Swing - Left	23.8 in
Boom Swing - Right	36.8 in
Cab Height	100 in
Dig Depth	161.7 in
Ground Clearance	14 in
Height - Boom Transport - No Tools*	95.7 in
Height - Boom Working - With Tools**	104.7 in
Maximum Blade Depth	26 in
Maximum Blade Height	16.1 in
Maximum Dig Height	265.2 in
Maximum Dump Clearance	187.4 in
Maximum Reach	281.1 in
Maximum Reach - Ground Level	273.6 in
Note	*Boom Height when stick is pinned in transport position with no attachments.
Note (1)	**Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.
Note (2)	***With blade positioned at the rear of the machine.
O/A Track Width	97.2 in
O/A Undercarriage Length	126 in
Overall Shipping Length - with Counterweight	266.7 in
Overall Shipping Length - without Counterweight	266.7 in
Stick Length	71.8 in
Swing Bearing - Height	29.7 in
Tail Swing with Counterweight	62.4 in
Tail Swing without Counterweight	57.1 in
Track Belt/Shoe Width	17.7 in
Vertical Wall	117.8 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.