309 CR VAB Mini Hydraulic Excavator

Overview

The Cat^® 309 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.

Key Features

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

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Specifications

Note	The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR VAB with a Standard Undercarriage, please refer to the 308 CR information.

Net Power	69.5 hp
Displacement	203 in³
Stroke	4.7 in
Bore	3.7 in
Gross Power - SAE J1995:2014	74.3 hp
Note	Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC	69.5 hp
Engine Model - U.S. EPA Tier 4 Final/EU Stage V	Cat C3.3B

Operating Weight	21477 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, standard stick, blade and no bucket.
Minimum Operating Weight*	20121 lb
Maximum Operating Weight*	21477 lb

Steel Tracks with Pads	728 lb
Counterweight	552 lb
Standard Stick	77 lb

Ground Pressure - Minimum Weight	5.1 psi
Travel Speed - High	3.1 mile/h
Maximum Traction Force - High Speed	6497 lbf
Travel Speed - Low	1.6 mile/h
Ground Pressure - Maximum Weight	5.5 psi
Maximum Traction Force - Low Speed	19064 lbf
Gradeability - Maximum	30 degrees

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

Operating Pressure - Travel	4134 psi
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard	9509 lbf
Digging Force - Bucket	13946 lbf
Pump Flow at 2,400 rpm	62 gpm
Operating Pressure - Swing	3626 psi
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment	4134 psi
Maximum Auxiliary Circuit - Secondary - Flow at Pump	9 gpm
Maximum Auxiliary Circuit - Secondary - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump	35 gpm
Maximum Auxiliary Circuit - Primary - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump	4134 psi
Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump	37 gpm

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

Height	17 in
Width - Wide	103.9 in
Width - Standard	97.2 in

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

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

Dig Depth	150.2 in
Cab Height	100 in
Maximum Blade Depth	19.1 in
Maximum Blade Height	16.1 in
Stick Length	71.7 in
Maximum Reach	256.5 in
Tail Swing without Counterweight	57.1 in
Vertical Wall	99.2 in
Swing Bearing Height	29.8 in
Track Belt/Shoe Width	17.7 in
Boom Swing Right	37 in
Overall Track Width	97.2 in
Overall Shipping Length	255.7 in
Maximum Dump Clearance	135.8 in
Boom in Reach	122.8 in
Maximum Reach at Ground Level	248 in
Transport Height	97.4 in
Overall Undercarriage Length	126 in
Ground Clearance	14 in
Tail Swing with Counterweight	62.4 in
Maximum Dig Height	205.5 in
Boom Swing Left	24 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.

Ground Clearance	14 in
Cab Height	100 in
Boom in Reach	106.7 in
Vertical Wall	146.7 in
Swing Bearing Height	29.8 in
Maximum Dump Clearance	247.4 in
Overall Undercarriage Length	126 in
Maximum Reach at Ground Level	303.7 in
Tail Swing without Counterweight	57.1 in
Maximum Reach	310.4 in
Track Belt/Shoe Width	17.7 in
Overall Shipping Length	255.7 in
Maximum Blade Depth	19.1 in
Maximum Dig Height	322 in
Overall Track Width	97.2 in
Tail Swing with Counterweight	62.4 in
Stick Length	71.7 in
Maximum Blade Height	16.1 in
Boom Swing Right	37 in
Boom Swing Left	24 in
Transport Height	97.4 in
Dig Depth	136.2 in