309 CR

Net Power: 69 hp / 51.2 kW
Operating Weight: 20870 lb / 9465 kg
Dig Depth: 182.8 in / 4642 mm

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.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.

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309 CR Long Undercarriage Product Brochure (North America, Chile, Colombia, Europe, Turkey, ANZP) 309 CR Standard Undercarriage Product Brochure (Europe, Turkey, ANZP) Cat Mini Hydraulic Excavators Product Line Brochure (North America) Cat Mini Hydraulic Excavators Product Line Brochure (Europe) Options And Accessories Kit Guide for Mini Hydraulic Excavators Cat Attachments for Mini Excavators Brochure Attachment Compatibility Guide for Mini Excavators

Specifications
Equipment
Related Products

Engine
Net Power	69 hp / 51.2 kW
Engine Model	Cat® C2.8 Turbo
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC	69 hp / 51.2 kW
Gross Power - ISO 14396	55.4 kW / 74.3 hp
Bore	3.5 in / 90 mm
Stroke	4.3 in / 110 mm
Displacement	171 in³ / 2.8 l
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 2,200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.

Weights
Operating Weight	20870 lb / 9465 kg
Minimum Operating Weight with Cab*	18886 lb / 8565 kg
Maximum Operating Weight with Cab**	20870 lb / 9465 kg
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.

Weight Increase from Minimum Configuration
Counterweight	552 lb / 250 kg
Long Stick	146 lb / 66 kg
Steel Tracks with Pads	728 lb / 330 kg

Travel System
Travel Speed - High	3.1 mile/h / 4.9 km/h
Travel Speed - Low	1.6 mile/h / 2.6 km/h
Maximum Traction Force - High Speed	6497 lb / 28.9 kN
Maximum Traction Force - Low Speed	19064 lb / 84.8 kN
Ground Pressure - Minimum Weight	5.4 psi / 37.5 kPa
Ground Pressure - Maximum Weight	6 psi / 41.4 kPa
Gradeability - Maximum	30 degrees

Service Refill Capacities
Cooling System	2.6 gal (US) / 10 l
Engine Oil	2.3 gal (US) / 8.8 l
Fuel Tank	39 gal (US) / 147 l
Hydraulic Tank	14 gal (US) / 53 l
Hydraulic System	29 gal (US) / 110 l

Hydraulic System
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	62 gpm / 233 L/min
Operating Pressure - Equipment	4134 psi / 285 bar
Operating Pressure - Travel	4134 psi / 285 bar
Operating Pressure - Swing	3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump	35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump	4134 psi / 285 bar
Maximum Auxiliary Circuit - High Flow - Flow at Pump	37 gpm / 140 L/min
Maximum Auxiliary Circuit - High Flow - Pressure at Pump	4134 lbf/in / 285 bar
Digging Force - Stick - Standard	9500 lb / 42.3 kN
Digging Force - Stick - Long	8023 lb / 35.7 kN
Digging Force - Bucket	13943 lb / 62 kN
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

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

Blade
Width - Standard	97 in / 2470 mm
Width - Wide	104 in / 2640 mm
Height	17 in / 431 mm

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

Dimensions - Standard Stick
Dig Depth	161.7 in / 4108 mm
Vertical Wall	117.8 in / 2991 mm
Maximum Reach - Ground Level	273.6 in / 6949 mm
Maximum Reach	281.1 in / 7141 mm
Maximum Dig Height	265.2 in / 6736 mm
Maximum Dump Clearance	187.4 in / 4760 mm
Boom In Reach	120.4 in / 3059 mm
Tail Swing with Counterweight	62.4 in / 1585 mm
Tail Swing without Counterweight	57.1 in / 1450 mm
Maximum Blade Height	16.1 in / 408 mm
Maximum Blade Depth	26 in / 671 mm
Height - Boom Transport - No Tools*	95.7 in / 2430 mm
Height - Boom Working - With Tools**	104.7 in / 2660 mm
Cab Height	100 in / 2541 mm
Swing Bearing - Height	29.7 in / 756 mm
O/A Undercarriage Length	126 in / 3200 mm
Overall Shipping Length - with Counterweight	266.7 in / 6774 mm
Overall Shipping Length - without Counterweight	266.7 in / 6774 mm
Track Belt/Shoe Width	17.7 in / 450 mm
O/A Track Width	97.2 in / 2470 mm
Ground Clearance	14 in / 356 mm
Stick Length	71.8 in / 1820 mm
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.

Dimensions - Long Stick
Dig Depth	182.8 in / 4642 mm
Vertical Wall	134 in / 3404 mm
Maximum Reach - Ground Level	293.7 in / 7460 mm
Maximum Reach	300.7 in / 7637 mm
Maximum Dig Height	277.1 in / 7039 mm
Maximum Dump Clearance	199.7 in / 5072 mm
Boom In Reach	126.6 in / 3215 mm
Tail Swing with Counterweight	62.4 in / 1585 mm
Tail Swing without Counterweight	57.1 in / 1450 mm
Maximum Blade Height	16.1 in / 408 mm
Maximum Blade Depth	26 in / 671 mm
Height - Boom Transport - No Tools*	89 in / 2260 mm
Height - Boom Working - With Tools**	120.1 in / 3050 mm
Cab Height	100 in / 2541 mm
Swing Bearing - Height	29.7 in / 756 mm
O/A Undercarriage Length	126 in / 3200 mm
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 / 450 mm
O/A Track Width	97.2 in / 2470 mm
Ground Clearance	14 in / 356 mm
Stick Length	92.8 in / 2358 mm
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 System
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 System

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).

Sound
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"

Sustainability
Recyclability	96%

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

Standard Equipment

ENGINE
- Cat C2.8 Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Fit-For-Life Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) Aftertreatment System
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Swing Brake
- Automatic Two Speed Travel
- Fuel Water Separator with Indicator
- Radial Seal – Double Element Air Filter
- Extended Life Coolant, –37° C (–35° F)
HYDRAULICS
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Dedicated Auxiliary Hydraulic Pump
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- Ecology Drain
OPERATOR ENVIRONMENT
- Top Guard ISO 10262:1998 (Level I)
- ROPS ISO 12117-2:2008
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer
- Adjustable Wrist Rests
- Molded Footrests
- Removable, Washable Floor Mat
- Travel Pedals and Hand Levers
- Cat Key with Passcode Option
- HVAC with Automatic Temperature Control
- Hydraulic Lockout Controls
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- Cab Mirrors (vary by region)
- Fabric, High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- LED Interior Light
- Literature Holder
- Mounting Bosses for Top and Front Guards
- 12V Power Socket
- Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
- Skylight
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Jog Dial Interface
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Camera Ready (IP68 & IP69K)
  – Hour Meter with Wake Up Switch
TECHNOLOGY (availability varies by region)
- Product Link™ Elite (regulations apply)
UNDERCARRIAGE
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
BOOM, STICK AND LINKAGES
- One Piece Boom (3400 mm/133.9 in)
- Standard Stick (1820 mm/71.7 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
- Thumb Ready (not available in all regions)
ELECTRICAL
- 12 Volt Electrical System
- 60 Ampere Alternator
- Circuit Breaker
- 900 CCA Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- Ignition Key Stop Switch
- Travel Alarm
GUARDING
- ROPS ISO 12117-2:2008
- Top Guard ISO 10262:1998 (Level I)
OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors

Optional Equipment

HYDRAULICS
- Third Auxiliary
OPERATOR ENVIRONMENT
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- Seat Belt Reminder System
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
  – Touch Screen
  – Site Reference System
  – High Definition Camera Capable (IP68 & IP69K)
  – Numeric Security Code
TECHNOLOGY (availability varies by region)
- Ease of Use Indicate
- Ease of Use E-Fence
- Ease of Use Laser Catcher
- Cat Grade Advanced 2D
- Cat Grade 3D
UNDERCARRIAGE
- Wide Dozer Blade
- Steel Tracks (450 mm/17.7 in wide)
- Wide Steel Tracks (600 mm/23.6 in)
- Steel Track with Rubber Pads
- Track Guides
BOOM, STICK AND LINKAGES
- Long Stick (2360 mm/92.9 in)
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines with Case Drain
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
ELECTRICAL
- Rear and Side Camera
- Rotating Beacon
GUARDING
- Top Guard ISO 10262:1998 (Level II)
- Front Guard (Mesh) ISO 10262:1998 (Level I)
- Front Guard (Heavy Duty) ISO 10262:1998 (Level II)
- Track Guards
OTHER
- Counterweight (250 kg/551 lb)
- Counterweight (500 kg/1103 lb)
- Water Jacket Heater
- Refueling Pump
- Variable Angle Boom (refer to 309 CR VAB brochure for VAB specs and additional information)

Flail Mowers

Flail Mowers are ideal for efficient cutting and mulching of vegetation and overgrowth.

Model	Working Width	Required Hydraulics	Overall Width
HMF210	39.4 in / 1000 mm	Standard Flow	46.6 in / 1184 mm

Heavy Duty Buckets - Mini Excavator

High strength buckets designed for maximum performance and value over a broad range of applications.

Model	Width	Capacity	Weight
330 mm (13 in), 99 L (3.5 ft3), Pin On, 50 mm (2 in)	13 in / 330 mm	3.5 ft³ / 99.09 l	299.8 lb / 136 kg
457 mm (18 in), 150 L (5.3 ft3), Pin On, 50 mm (2 in)	18 in / 457 mm	5.3 ft³ / 150.1 l	332.9 lb / 151 kg
610 mm (24 in), 229 L (8.1 ft3), Pin On, 50 mm (2 in)	24 in / 610 mm	8.1 ft³ / 229.39 l	392.4 lb / 178 kg
762 mm (30 in), 309 L (10.9 ft3), Pin On, 50 mm (2 in)	30 in / 762 mm	10.9 ft³ / 308.7 l	456.4 lb / 207 kg
914 mm (36 in), 388 L (13.7 ft3), Pin On, 50 mm (2 in)	36 in / 914 mm	13.7 ft³ / 387.89 l	507.1 lb / 230 kg

Augers

Designed to drill holes for footings, fencing, signs and trees.

Model	Drive Shaft Torque at Maximum Pressure	Drive Method	Mounting Bracket Design
A68, 5 Ton Mini Excavators	5034.6 lb/ft / 6826 N·m	Gerotor Motor - Double Planetary Reduction	8 Ton Mini Excavator Pin On

Ditch Cleaning Buckets - Mini Excavator

Used in ditch cleaning, sloping, grading and other finishing work.

Model	Width	Weight	Tip Radius
1219 mm (48 in), 329 L (11.6 ft3), Pin On	48 in / 1219 mm	477.1 lb / 216.39 kg	31.3 in / 795 mm
1372 mm (54 in), 375 L (13.2 ft3), Pin On	54 in / 1372 mm	517 lb / 234.5 kg	31.3 in / 795 mm
1524 mm (60 in), 420 L (14.8 ft3), Pin On	60 in / 1524 mm	557.1 lb / 252.69 kg	31.3 in / 795 mm

Mulchers

High-performance cutting and mulching of vegetation and overgrowth.

Model	Overall Width	Working Width	Length
HM208	40.4 in / 1026 mm	32.2 in / 818 mm	28.1 in / 714 mm
HM210	48.3 in / 1226 mm	39.8 in / 1012 mm	28.1 in / 714 mm

Grading Buckets - Mini Excavator

For cleaning ditches, sloping, grading and other finishing work.

Model	Width	Capacity	Weight
1200 mm (47 in)	47.2 in / 1200 mm	14.5 ft³ / 410.6 l	615.3 lb / 279.1 kg
1500 mm (59 in)	59.1 in / 1500 mm	18.4 ft³ / 521 l	761.9 lb / 345.6 kg

Heavy Duty Rock Buckets - Mini Excavator

Used for aggressive bucket loading in highly abrasive applications such as severe rock.

Model	Width	Capacity	Weight
610 mm (24 in)	24 in / 610 mm	8.1 ft³ / 229.39 l	427.7 lb / 194 kg
762 mm (30 in)	30 in / 762 mm	10.9 ft³ / 308.7 l	491.6 lb / 223 kg

Dual Lock™ Pin Grabber Couplers - Mini Excavator

Increase machine versatility and improve overall production.

Model	Weight	Width	Length
8 Ton Mini Excavators Hydraulic	211.6 lb / 96 kg	14.6 in / 370 mm	23.4 in / 595 mm

Tiltrotators

Helps you get the job done faster with the quality you expect from Cat products. Integrated to your excavator, Tiltrotators are productive, easy-to-use, and add value to your operation. Tiltrotators are a versatile solution providing enhancements to your operation.

Model	Machine Class	Weight	Interface Options: Top-Bottom
TRS8, Pin On (Pin Grabber) / S50, 7-9 Ton Mini Excavators	7-9 Ton Mini Excavators	712.1 lb / 323 kg	Pin On (Pin Grabber Coupler) / S50 Coupler

Heavy Duty Buckets

Ideal for semi-rocky soil or where hard bank material must be broken out and removed.

Model	Width	Capacity	Weight
300 mm (12 in), 96 L (3.4 ft3), Pin Lock, Weld-On Adapters	11.8 in / 300 mm	3.4 ft³ / 96 l	249.1 lb / 113 kg
406 mm (16 in), 120 L (4.2 ft3), Pin Lock, Weld-On Adapters	16 in / 406 mm	4.2 ft³ / 120 l	297.6 lb / 135 kg
457 mm (18 in), 139 L (4.9 ft3), Pin Lock, Weld-On Adapters	18 in / 457 mm	4.9 ft³ / 139 l	304.2 lb / 138 kg
610 mm (24 in), 207 L (7.3 ft3), Pin Lock, Weld-On Adapters	24 in / 610 mm	7.3 ft³ / 207 l	370.4 lb / 168 kg
762 mm (30 in), 280 L (9.9 ft3), Pin Lock, Weld-On Adapters	30 in / 762 mm	9.9 ft³ / 280 l	443.1 lb / 201 kg
914 mm (36 in), 340 L (12 ft3), Pin Lock, Weld-On Adapters	36 in / 914 mm	12 ft³ / 340 l	509.3 lb / 231 kg

High Capacity Buckets

Ideal for work in lower density soils and light materials.

Model	Width	Capacity	Weight
406 mm (16 in), 160 L (5.7 ft3), Pin Lock, Weld-On Adapters	16 in / 406 mm	5.7 ft³ / 160 l	337.3 lb / 153 kg
457 mm (18 in), 180 L (6.4 ft3), Pin Lock, Weld-On Adapters	18 in / 457 mm	6.4 ft³ / 180 l	357.1 lb / 162 kg
610 mm (24 in), 260 L (9.2 ft3), Pin Lock, Weld-On Adapters	24 in / 610 mm	9.2 ft³ / 260 l	427.7 lb / 194 kg
762 mm (30 in), 360 L (12.7 ft3), Pin Lock, Weld-On Adapters	30 in / 762 mm	12.7 ft³ / 360 l	489.4 lb / 222 kg
914 mm (36 in), 460 L (16.2 ft3), Pin Lock, Weld-On Adapters	36 in / 914 mm	16.2 ft³ / 460 l	560 lb / 254 kg

Mobile Scrap & Demolition Shears

Cat® Scrap and Demolition Shears are industry leaders in steel processing. Power and performance in a reliable package, backed by the best dealer network in the world.

Model	Tip Force	Rotation	Jaw Opening
S308	43.3 Sh Ton / 385 kN	360 Degrees	9.4 in / 240 mm