309 CR Mini Hydraulic Excavator

Overview

The Cat^® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

Key Features

More Comfort. More Performance. More Versatility.

Up To 10% Lower Total Cost of Ownership*

with improved fuel efficiency and longer service intervals.

* Versus previous models.

ALWAYS STANDARD

• Stick Steer

• Cruise Control

• Advanced Touchscreen Monitor

• VisionLink™ Connect

Up To 20% More Performance*

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

* Versus previous models.

Media Gallery

Specifications

Net Power	69 hp
Engine Model	Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	69 hp
Gross Power - ISO 14396	55.4 kW
Bore	3.5 in
Stroke	4.3 in
Displacement	171 in³
Note	Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)	Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.

Operating Weight	20870 lb
Minimum Operating Weight with Cab*	18886 lb
Maximum Operating Weight with Cab**	20870 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.

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

Travel Speed - High	3.1 mile/h
Travel Speed - Low	1.6 mile/h
Maximum Traction Force - High Speed	6497 lbf
Maximum Traction Force - Low Speed	19064 lbf
Ground Pressure - Minimum Weight	5.4 psi
Ground Pressure - Maximum Weight	6 psi
Gradeability - Maximum	30 degrees

Cooling System	2.6 gal (US)
Engine Oil	2.3 gal (US)
Fuel Tank	39 gal (US)
Hydraulic Tank	14 gal (US)
Hydraulic System	29 gal (US)

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

Machine Swing Speed	10 r/min
Boom Swing - Left	60 degrees
Boom Swing - Right	50 degrees

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

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

Dig Depth	161.7 in
Vertical Wall	117.8 in
Maximum Reach - Ground Level	273.6 in
Maximum Reach	281.1 in
Maximum Dig Height	265.2 in
Maximum Dump Clearance	187.4 in
Boom In Reach	120.4 in
Tail Swing with Counterweight	62.4 in
Tail Swing without Counterweight	57.1 in
Maximum Blade Height	16.1 in
Maximum Blade Depth	26 in
Height - Boom Transport - No Tools*	95.7 in
Height - Boom Working - With Tools**	104.7 in
Cab Height	100 in
Swing Bearing - Height	29.7 in
O/A Undercarriage Length	126 in
Overall Shipping Length - with Counterweight	266.7 in
Overall Shipping Length - without Counterweight	266.7 in
Track Belt/Shoe Width	17.7 in
O/A Track Width	97.2 in
Ground Clearance	14 in
Stick Length	71.8 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.

Dig Depth	182.8 in
Vertical Wall	134 in
Maximum Reach - Ground Level	293.7 in
Maximum Reach	300.7 in
Maximum Dig Height	277.1 in
Maximum Dump Clearance	199.7 in
Boom In Reach	126.6 in
Tail Swing with Counterweight	62.4 in
Tail Swing without Counterweight	57.1 in
Maximum Blade Height	16.1 in
Maximum Blade Depth	26 in
Height - Boom Transport - No Tools*	89 in
Height - Boom Working - With Tools**	120.1 in
Cab Height	100 in
Swing Bearing - Height	29.7 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)***
Track Belt/Shoe Width	17.7 in
O/A Track Width	97.2 in
Ground Clearance	14 in
Stick Length	92.8 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.

Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).