305 CR - Tier 4 / Stage V

Net Power: 45 hp / 33.6 kW
Operating Weight: 12688 lb / 5754 kg
Dig Depth: 144.5 in / 3670 mm

The Cat® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

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305 CR Small Product Brochure (NACD) 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	45 hp / 33.6 kW
Engine Model	C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp / 33.6 kW
Gross Power - 2,400 rpm - SAE J1995:2014	48.4 hp / 36.1 kW
Bore	3.3 in / 84 mm
Stroke	3.9 in / 100 mm
Displacement	101 in³ / 1.662 l
Emissions	The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note	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 2400 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	12688 lb / 5754 kg
Minimum Operating Weight with Canopy*	11016 lb / 4996 kg
Maximum Operating Weight with Canopy**	12469 lb / 5655 kg
Minimum Operating Weight with Cab*	11234 lb / 5095 kg
Maximum Operating Weight with Cab**	12688 lb / 5754 kg
Note (1)	*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Note (2)	**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Weight Increase from Minimum Configuration
Counterweight	534 lb / 242 kg
Long Stick	75 lb / 34 kg
Steel Tracks with Pads	827 lb / 375 kg
Angle Blade	225 lb / 102 kg

Travel System
Travel Speed - High	3.1 mile/h / 5 km/h
Travel Speed - Low	1.7 mile/h / 2.8 km/h
Maximum Traction Force - High Speed	5553 lbf / 24.7 kN
Maximum Traction Force - Low Speed	11353 lbf / 50.5 kN
Ground Pressure - Minimum Weight	4 psi / 27.3 kPa
Ground Pressure - Maximum Weight	4.7 psi / 32.2 kPa
Gradeability - Maximum	30 degrees

Service Refill Capacities
Cooling System	2.9 gal (US) / 11 l
Engine Oil	1.6 gal (US) / 6 l
Fuel Tank	17 gal (US) / 63 l
Hydraulic Tank	16 gal (US) / 60 l
Hydraulic System	20 gal (US) / 75 l

Hydraulic System
Pump Flow at 2,400 rpm	35 gpm / 133 L/min
Operating Pressure - Equipment	3843 psi / 265 bar
Operating Pressure - Travel	3843 psi / 265 bar
Operating Pressure - Swing	2901 psi / 200 bar
Auxiliary Circuit - Primary - Flow	21 gpm / 80 L/min
Auxiliary Circuit - Primary - Pressure	3843 psi / 265 bar
Auxiliary Circuit - Secondary - Flow	7 gpm / 28 L/min
Auxiliary Circuit - Secondary - Pressure	3843 psi / 265 bar
Digging Force - Stick - Standard	6362 lbf / 28.3 kN
Digging Force - Stick - Long	5665 lbf / 25.2 kN
Digging Force - Bucket	11061 lbf / 49.2 kN
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump

Swing System
Machine Swing Speed	9 r/min
Boom Swing - Left	72 Degrees
Boom Swing - Right	50 Degrees

Blade
Straight Blade Width	78 in / 1980 mm
Straight Blade Height	15.4 in / 390 mm
Angle Blade Width	78 in / 1980 mm
Angle Blade Height	15.7 in / 400 mm
Angle Blade - Left	25 degrees
Angle Blade - Right	25 degrees

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

Dimensions - Standard Stick
Dig Depth	134.6 in / 3420 mm
Vertical Wall	91.9 in / 2335 mm
Maximum Reach - Ground Level	220.1 in / 5590 mm
Maximum Reach	226.6 in / 5755 mm
Maximum Dig Height	205.3 in / 5215 mm
Maximum Dump Clearance	145.7 in / 3700 mm
Boom In Reach	101.2 in / 2570 mm
Tail Swing without Counterweight	43.1 in / 1095 mm
Tail Swing with Counterweight	47.2 in / 1200 mm
Maximum Blade Height	15.2 in / 385 mm
Maximum Blade Depth	23.4 in / 595 mm
Boom Height - Shipping Position	71.7 in / 1820 mm
O/A Shipping Height	100.4 in / 2550 mm
Swing Bearing - Height	24.4 in / 619 mm
O/A Undercarriage Length	101.6 in / 2580 mm
Overall Shipping Length*	208.9 in / 5305 mm
Boom Swing - Right	34.1 ° / 865 mm
Boom Swing - Left	24.2 ° / 615 mm
Track Belt/Shoe Width	15.7 in / 400 mm
Ground Clearance	13.2 in / 335 mm
Stick Length	53.2 in / 1351 mm
Note	*Overall Shipping Length depends on blade position during shipment.

Dimensions - Long Stick
Dig Depth	144.5 in / 3670 mm
Vertical Wall	100.8 in / 2560 mm
Maximum Reach - Ground Level	229.7 in / 5835 mm
Maximum Reach	235.8 in / 5990 mm
Maximum Dig Height	210.8 in / 5355 mm
Maximum Dump Clearance	151.4 in / 3845 mm
Boom In Reach	101.6 in / 2580 mm
Tail Swing without Counterweight	43.1 in / 1095 mm
Tail Swing with Counterweight	47.2 in / 1200 mm
Maximum Blade Height	15.2 in / 385 mm
Maximum Blade Depth	23.4 in / 595 mm
Boom Height - Shipping Position	74.6 in / 1895 mm
O/A Shipping Height	100.4 in / 2550 mm
Swing Bearing - Height	24.4 in / 619 mm
O/A Undercarriage Length	101.6 in / 2580 mm
Overall Shipping Length*	210.2 in / 5340 mm
Boom Swing - Right	34.1 ° / 865 mm
Boom Swing - Left	615 mm / 24.2 °
Track Belt/Shoe Width	15.7 in / 400 mm
Track Width	78 in / 1980 mm
Ground Clearance	13.2 in / 335 mm
Stick Length	63 in / 1601 mm
Note	*Overall Shipping Length depends on blade position during shipment.

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)	76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)
Note	The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. *The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.

Sustainability
Recyclability	96%

Standard Equipment

ENGINE
- Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Two Speed Travel
- Fuel Water Separator
- Power on Demand (not available in all regions)
- Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
HYDRAULICS
- Smart Tech Electronic Pump
- Accumulator
- Automatic Swing Brake
- Auxiliary Hydraulic Lines
- One and Two Way Auxiliary Flow
- Continuous Auxiliary Flow
- Auxiliary Line Quick Disconnects
GUARDING
- ROPS ISO 12117-2:2008
- Top Guard ISO 10262:1998 (Level I)
OTHER
- Eco Drain
OPERATOR ENVIRONMENT
- LED Front and Rear Lights
- LED Boom Light
- Canopy or Cab
- Top Guard ISO 10262:1998 Level I
- ROPS – ISO 12117-2:2008
- TOPS – ISO 12117:1997
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer (optional in some regions)
- Adjustable Wrist Rests
- Washable Floor Mat
- Travel Pedals and Hand Levers
- Machine Security
- Machine Security – Standard Key with Pass Code
- Fabric Suspension Seat (Cab only)
- Vinyl Suspension Seat (Canopy only)
- Hydraulic Lockout – All Controls
- Retractable High Visibility Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Storage Pocket
- Skylight
- Mounting Bosses for Front
- Signaling/Warning Horn
- Interior Light (Cab only)
- Boom Light, Halogen (not available in all regions)
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Hour Meter with Wake Up Switch
  – Jog Dial (cab only)
UNDERCARRIAGE
- Rubber Belt (400 mm/15.7 in)
- Dozer Straight Blade
- Dozer Blade Float
- Tie Downs on Track Frame
BOOM, STICK AND LINKAGES
- One Piece Boom (2716 mm/106.9 in)
- Standard Stick (1351 mm/53.2 in)
- Front Shovel Capable – Pin-On
- Thumb Ready
- Certified Lifting Eye
ELECTRICAL
- 12 Volt Battery
- Software (machine and monitor)
- Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- 12 Volt Power Socket
- Travel Alarm (optional in some regions)

Optional Equipment

UNDERCARRIAGE
- Steel Track (400 mm/15.7 in)
- Steel Track with Rubber Pads
- Angle Blade
BOOM, STICK AND LINKAGES
- Long Stick (1601 mm/63.0 in)
- Front Shovel Capable – Dual Lock Manual Coupler
- Front Shovel Capable – Hydraulic Coupler
- Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Bucket Divert Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Hydraulic Quick Coupler Lines
ELECTRICAL
- Product Link™ PL243 (regulations apply)
- Product Link PLE643 (regulations apply)
OTHER
- Bio Oil Capable
- Water Jacket Heater
- Counterweight (242 kg/534 lb)
OPERATOR ENVIRONMENT
- Cab with Air Conditioning
- Cab with Heater
- No Travel Pedals and Hand Levers (optional in some regions)
- Machine Security – Push to Start with Key Fob/Pass Code
- Mirrors, Left, Right and Rear
- Camera
- Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
- Next Generation Advanced Monitor
  – Touch Screen
  – Site Reference System
  – High Definition Camera Capable (IP68 and IP69K)
  – Numeric Security Code
- Seat Belt Reminder System
- Cat Grade with Advanced 2D
- Cat Grade with 3D
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)

Pallet Fork Carriages

For moving palletized loads on construction sites, handling bagged fertilizer and seed at landscaping and nursery sites.

Model	Height	Width	Overall Width
1300 mm (51 in), Skid Steer Coupler, Class II	21.7 in / 550 mm	51 in / 1300 mm	51.7 in / 1312 mm

Equipment Management

Cat® Equipment Management gives you access to the data you need to keep your equipment on the job site and earning money. You can track equipment location and hours, monitor machine use and health, then take informed action that will keep your operation running smoothly, efficiently and profitably.

Model
VisionLink™

Flail Mowers

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

Model	Working Width	Required Hydraulics	Overall Width
HMF110	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
305 mm (12 in), 60 L (2.1 ft3), Pin On, 45 mm (1.8 in)	12 in / 305 mm	2.1 ft³ / 59.5 l	156.5 lb / 71 kg
406 mm (16 in), 76 L (2.7 ft3), Pin On, 45 mm (1.8 in)	16 in / 406 mm	2.7 ft³ / 76.5 l	174.2 lb / 79 kg
457 mm (18 in), 88 L (3.1 ft3), Pin On, 45 mm (1.8 in)	18 in / 457 mm	3.1 ft³ / 87.8 l	194 lb / 88 kg
508 mm (20 in), 102 L (3.6 ft3), Pin On, 45 mm (1.8 in)	20 in / 508 mm	3.6 ft³ / 101.9 l	207.2 lb / 94 kg
619 mm (24 in), 130 L (4.6 ft3), Pin On, 45 mm (1.8 in)	24.4 in / 619 mm	4.6 ft³ / 130.3 l	233.7 lb / 106 kg
762 mm (30 in), 173 L (6.1 ft3), Pin On, 45 mm (1.8 in)	30 in / 762 mm	6.1 ft³ / 172.69 l	280 lb / 127 kg
914 mm (36 in), 221 L (7.8 ft3), Pin On, 45 mm (1.8 in)	36 in / 914 mm	7.8 ft³ / 220.89 l	321.9 lb / 146 kg

Heavy Duty Capacity Buckets - Mini Excavator

Optimized geometry provides maximum digging force and material volume for heavy-duty applications.

Model	Width	Capacity	Weight
305 mm (12 in), 82 L (2.9 ft3), Pin On, 45 mm (1.8 in)	12 in / 305 mm	2.9 ft³ / 82.09 l	185.2 lb / 84 kg
406 mm (16 in), 105 L (3.7 ft3), Pin On, 45 mm (1.8 in)	16 in / 406 mm	3.7 ft³ / 104.8 l	205 lb / 93 kg
457 mm (18 in), 125 L (4.4 ft3), Pin On, 45 mm (1.8 in)	18 in / 457 mm	4.4 ft³ / 124.59 l	227.1 lb / 103 kg
508 mm (20 in), 144 L (5.1 ft3), Pin On, 45 mm (1.8 in)	20 in / 508 mm	5.1 ft³ / 144.39 l	240.3 lb / 109 kg
619 mm (24 in), 181 L (6.4 ft3), Pin On, 45 mm (1.8 in)	24.4 in / 619 mm	6.4 ft³ / 181.19 l	271.2 lb / 123 kg
762 mm (30 in), 241 L (8.5 ft3), Pin On, 45 mm (1.8 in)	30 in / 762 mm	8.5 ft³ / 240.69 l	321.9 lb / 146 kg
914 mm (36 in), 300 L (10.6 ft3), Pin On, 45 mm (1.8 in)	36 in / 914 mm	10.6 ft³ / 300.2 l	368.2 lb / 167 kg

Augers

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

Model	Drive Shaft Torque at Maximum Pressure	Drive Method	Mounting Bracket Design
A41, 5 Ton Mini Excavators	3038.8 lb/ft / 4120 N·m	Gerotor Motor - Single Planetary Reduction	5 Ton Mini Excavator Pin On
A68. 5 Ton Mini Excavators	5034.6 lb/ft / 6826 N·m	Gerotor Motor - Double Planetary Reduction	5 Ton Mini Excavator Pin On

Ditch Cleaning Buckets - Mini Excavator

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

Model	Width	Weight
1000 mm (39 in), 170 L (6 ft3), Pin On	39.4 in / 1000 mm	258.6 lb / 117.3 kg
1300 mm (51 in), 184 L (6.5 ft3), Pin On	51.2 in / 1300 mm	253.5 lb / 115 kg
1300 mm (51 in), 220 L (7.8 ft3), Pin On	51.2 in / 1300 mm	260.6 lb / 118.19 kg
1600 mm (63 in), 280 L (9.9 ft3), Pin On	63 in / 1600 mm	306.7 lb / 139.1 kg

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	9.2 ft³ / 259.89 l	410.5 lb / 186.19 kg
1500 mm (59 in)	59.1 in / 1500 mm	11.6 ft³ / 329.89 l	491.4 lb / 222.89 kg

Dual Lock™ Pin Grabber Couplers - Mini Excavator

Increase machine versatility and improve overall production.

Model	Weight	Width	Length
5 Ton Mini Excavators Hydraulic	169.8 lb / 77 kg	10.7 in / 272 mm	20.8 in / 528 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
TRS6, Pin On (Pin Grabber) / S40, 5-6 Ton Mini Excavators	5-6 Ton Mini Excavators	394.6 lb / 179 kg	Pin On (Pin Grabber) Coupler / S40 Coupler

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