Cat_306_CR_Mini_Hydraulic_Excavator_AEHQ8236-03.pdf

Features:

The Cat® 306 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

ALL DAY COMFORT

� Your choice of a canopy (availability dependent on region) or a sealed and pressurized cab equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

EASY TO OPERATE

� Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

STICK STEER TRAVEL MODE

� Moving around the job site is even easier with Cat Stick Steer. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A MINI DESIGN

� Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently.

SAFETY ON THE JOB SITE

� Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. An optional back-up camera, courtesy work lights and a fluorescent retractable seat belt with optional seat belt reminder system are just a few of the safety features we’ve built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

� Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

LOWER OPERATING COSTS

� Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.

UNMATCHED DEALER SUPPORT

� Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

CHOICES

� Configure the machine to meet your specific application needs with a dozer straight blade or dozer angle blade.

Cat®

306 CR

Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

EASE OF USE FOR CAT MINI EXCAVATORS

Ease of Use assists operators in controlling the machine to simplify operation, improve accuracy and enhance overall productivity on the job site.

Ease of Use is available equipped on your mini excavator from the factory or as an upgrade kit post purchase.

Operators can choose from two software packages, Indicate or E-Fence to suit their application needs.

INDICATE

Ease of Use Indicate is an entry-level grade system providing visual and audible indicators to where the bucket is versus a target grade to cut and fill to exact specifications the first time without overcutting.

applications.

E-FENCE

Ease of Use E-Fence automatically constrains machine motion within operator pre-set boundaries for Ceiling, Floor, Wall and Swing to avoid structures overhead, underground, in front or to the left or right of the machine.

applications.

CAT GRADE

Cat Grade is available as an aftermarket-installed automatics system that is easy to learn and use. Cat Grade Advanced 2D and 3D give you the ability to create, manage and grade simple to complex designs with accuracy ensuring cuts and fills are made to exact specifications.

Cat Grade reduces costs, improves accuracy, provides improved operator efficiency and enhances safety.

GRADE ADVANCED 2D

Cat Grade Advanced 2D allows the operator to set parameters for digging and leveling operations, including cross slope and work site main fall.

Grade Advanced 2D also lets the operator input, edit and work to basic 2D design plans from the operator’s seat.

GRADE 3D

Cat Grade 3D for excavators adds deeper design capabilities, plus, Global navigation satellite system (GNSS) receivers and a correctional data source to achieve Real Time Kinematic (RTK) positioning guidance for more complex planes, slopes, contours and curves.

Availability varies by region, please contact our Cat dealer to discuss the best technology options for you and your application.

CAT TECHNOLOGY

Engine Engine Model Cat® C2.4 Turbo Net Power ISO 9249, 80/1269/EEC 41.7 kW 55.9 hp Engine Power

the time of manufacture.

• Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.

Weights

**�Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

**�Maximum Weight is based on steel tracks with pads, extra counterweight 500 kg (1,103 lb), operator, full fuel tank, long stick, fixed blade and no bucket.

Weight Increase from Minimum Configuration

Travel System

Service Refill Capacities

Hydraulic System Load Sensing Hydraulics with Variable Displacement Piston Pump

Auxiliary Circuit – Primary

Auxiliary Circuit – Secondary

Swing System

Blade

Certification – Cab

Specifications

14 22

Dimensions Standard Stick Long Stick

1 Dig Depth 3710 mm (146 in) 4110 mm (162 in) 2 Vertical Wall 2710 mm (107 in) 3165 mm (125 in) 3 Maximum Reach at Ground Level 6130 mm (241 in) 6535 mm (257 in) 4 Maximum Reach 6295 mm (248 in) 6685 mm (263 in) 5 Maximum Dig Height 5835 mm (230 in) 6130 mm (241 in) 6 Maximum Dump Clearance 4325 mm (170 in) 4610 mm (182 in) 7 Boom in Reach 2485 mm (98 in) 2960 mm (117 in) 8 Tail Swing with Counterweight (250 kg/551 lb) 1475 mm (58 in) 1475 mm (58 in) with Counterweight (500 kg/1,103 lb) 1516 mm (60.0 in) 1516 mm (60.0 in) Tail Swing without Counterweight 1350 mm (53 in) 1350 mm (53 in)

9 Maximum Blade Height 415 mm (16 in) 415 mm (16 in) 10 Maximum Blade Depth 600 mm (24 in) 600 mm (24 in) 11 Boom Height in Shipping Position 1755 mm (69 in) 2410 mm (95 in) 12 Cab Height 2545 mm (100 in) 2545 mm (100 in) 13 Swing Bearing Height 672 mm (27 in) 672 mm (27 in) 14 Overall Undercarriage Length 2580 mm (102 in) 2580 mm (102 in) 15 Overall Shipping Length 5975 mm (235 in) 5950 mm (234 in) 16 Boom Swing Right 910 mm (36 in) 910 mm (36 in) 17 Boom Swing Left 735 mm (29 in) 735 mm (29 in) 18 Track Belt/Shoe Width 400 mm (16 in) 400 mm (16 in) 19 Overall Track Width 1980 mm (78 in) 1980 mm (78 in) 20 Width Over Upper House 1950 mm (77 in) 1950 mm (77 in) 21 Ground Clearance 306 mm (12 in) 306 mm (12 in) 22 Stick Length 1580 mm (62 in) 1980 mm (78 in)

Lift Capacities with Cab – Minimum Configuration

Lift Point Height

Lift Point radius 3 m (9.8 ft) Lift Point radius 4.5 m (14.8 ft) Lift Point radius (Maximum) Over Front

Over Side

Over Front Over Side

Over Front Over Side m (ft)

Blade Down

Blade Up

Blade Down

Blade Up

Blade Down

Blade Up

4.5 m (14.8 ft) Standard Stick kg 1228* 1228* 1228* 4.16

(lb) (2,708*) (2,708*) (2,708*) (13.6) 3 m

(9.8 ft) Standard Stick kg 1717* 1236 1010 1118* 1118* 806 5.18

(lb) (3,786*) (2,725) (2,227) (2,465*) (2,465*) (1,777) (17)

1.5 m (4.9 ft) Standard Stick kg 3698* 2150 1685 2070* 1180 957 1193* 874 712 5.51

(lb) (8,154*) (4,741) (3,715) (4,564*) (2,602 (2,110)) (2,631*) (1,927) (1,570) (18.1) 0 m (0 ft) Standard Stick kg 3775* 2061 1604 2277* 1137 916 1474* 903 733 5.32

(lb) (8,324*) (4,545) (3,537) (5,021*) (2,507) (2,020) (3,250*) (1,991) (1,616) (17.5)

Minimum Weight with Cab includes rubber tracks, no extra counterweight, operator, full fuel tank, standard stick, fixed blade and no bucket.

Lift Capacities with Cab – Maximum Configuration

Lift Point Height

Lift Point radius 3 m (9.8 ft) Lift Point radius 4.5 m (14.8 ft) Lift Point radius (Maximum) Over Front

Over Side

Over Front Over Side

Over Front Over Side m (ft)

Blade Down

Blade Up

Blade Down

Blade Up

Blade Down

Blade Up

4.5 m (14.8 ft) Long Stick kg 1452* 1452* 1452* 1212* 1212* 1212* 4.7

(lb) (3,202*) (3,202*) (3,202*) (2,672*) (2,672*) (2,672*) (15.4) 3 m

(9.8 ft) Long Stick kg 1512* 1512* 1512* 1116* 1116* 936 5.6

(lb) (3,334*) (3,334*) (3,334*) (2,461*) (2,461*) (2,064) (18.4)

1.5 m (4.9 ft) Long Stick kg 1915* 1497 1252 1172* 1006 847 5.9

(lb) (4,223*) (3,301) (2,761) (2,584*) (2,218) (1,868) (19.4) 0 m (0 ft) Long Stick kg 3709* 2596 2090 2225* 1439 1197 1386* 1033 867 5.73

(lb) (8,178*) (5,724) (4,608) (4,906*) (3,173) (2,639) (3,056*) (2,278) (1,912) (18.8)

Maximum Weight with Cab includes steel tracks with pads, extra counterweight (500 kg/1,103 lb), operator, full fuel tank, long stick, fixed blade and no bucket.

Lift Capacities with Canopy – Minimum Configuration

Lift Point Height

Lift Point radius 3 m (9.8 ft) Lift Point radius 4.5 m (14.8 ft) Lift Point radius (Maximum) Over Front

Over Side

Over Front Over Side

Over Front Over Side m (ft)

Blade Down

Blade Up

Blade Down

Blade Up

Blade Down

Blade Up

4.5 m (14.8 ft) Standard Stick kg 1228* 1228* 1228* 4.16

(lb) (2,708*) (2,708*) (2,708*) (13.6) 3 m

(9.8 ft) Standard Stick kg 1717* 1236 1010 1118* 1118* 806 5.18

(lb) (3,786*) (2,725) (2,227) (2,465*) (2,465*) (1,777) (17)

1.5 m (4.9 ft) Standard Stick kg 3698* 2150 1685 2070* 1180 957 1193* 874 712 5.51

(lb) (8,154*) (4,741) (3,715) (4,564*) (2,602) (2,110) (2,631*) (1,927) (1,570) (18.1) 0 m (0 ft) Standard Stick kg 3775* 2061 1604 2277* 1137 916 1474* 903 733 5.32

(lb) (8,324*) (4,545) (3,537) (5,021*) (2,507) (2,020) (3,250*) (1,991) (1,616) (17.5)

Minimum Weight with Canopy includes rubber tracks, no extra counterweight, operator, full fuel tank, standard stick, fixed blade and no bucket.

Lift Capacities with Canopy – Maximum Configuration

Lift Point Height

Lift Point radius 3 m (9.8 ft) Lift Point radius 4.5 m (14.8 ft) Lift Point radius (Maximum) Over Front

Over Side

Over Front Over Side

Over Front Over Side m (ft)

Blade Down

Blade Up

Blade Down

Blade Up

Blade Down

Blade Up

4.5 m (14.8 ft) Long Stick kg 1452* 1452* 1452* 1212* 1212* 1212* 4.7

(lb) (3,202*) (3,202*) (3,202*) (2,672*) (2,672*) (2,672*) (15.4) 3 m

(9.8 ft) Long Stick kg 1512* 1512* 1512* 1116* 1116* 936 5.6

(lb) (3,334*) (3,334*) (3,334*) (2,461*) (2,461*) (2,064) (18.4)

1.5 m (4.9 ft) Long Stick kg 1915* 1497 1252 1172* 1006 847 5.9

(lb) (4,223*) (3,301) (2,761) (2,584*) (2,218) (1,868) (19.4) 0 m (0 ft) Long Stick kg 3709* 2596 2090 2225* 1439 1197 1386* 1033 867 5.73

(lb) (8,178*) (5,724) (4,608) (4,906*) (3,173) (2,639) (3,056*) (2,278) (1,912) (18.8)

Maximum Weight with Canopy include steel tracks with pads, extra counterweight (500 kg/1,103 lb), operator, full fuel tank, long stick, fixed blade and no bucket.

*�The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart.

306 CR Environmental Declaration

The following information applies to the machine at the time of final manufacture as configured for sale in the regions covered in this document. The content of this declaration is valid as of the date issued; however, content related to machine features and specifications are subject to change without notice. For additional information, please see the machine’s Operation and Maintenance Manual.

For more information on sustainability in action and our progress, please visit https://www.caterpillar.com/en/company/sustainability.

Engine

• The Cat® C2.4 Turbo engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.

• Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to:

�20% biodiesel FAME (fatty acid methyl ester)* �100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.

*�Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

**�Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Air Conditioning System

• 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.

Paint

• Based on best available knowledge, the maximum allowable concentration, measured in parts per million (PPM), of the following heavy metals in paint are:

– Barium < 0.01%

– Cadmium < 0.01%

– Chromium < 0.01%

– Lead < 0.01%

Sound Performance

Operator Sound Pressure* 72 dB(A) (ISO 6396:2008)

External Sound Power Level** 98 dB(A) (ISO 6395:2008)

*�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 European Union Directive 2000/14/EC.

Oils and Fluids

• Caterpillar factory fills with ethylene glycol coolants. Cat Diesel Engine Antifreeze/Coolant (DEAC) and Cat Extended Life Coolant (ELC) can be recycled. Consult your Cat dealer for more information.

• Cat Bio HYDO™ Advanced is an EU Ecolabel approved biodegradable hydraulic oil.

• Additional fluids are likely to be present, please consult the Operations and Maintenance Manual or the Application and Installation guide for complete fluid recommendations and maintenance intervals.

Features and Technology

• The following features and technology may contribute to fuel savings and/or carbon reduction. Features may vary.

Consult your Cat dealer for details.

– Advanced hydraulic systems balance power and efficiency

– �Power On Demand provides full time efficiency and power when you need it, and is transparent to the operator

– �Auto idle and auto engine shutdown

– �Extended maintenance intervals reduce fluid and filter consumption

– �Remote Flash and Remote Troubleshoot (if equipped)

– �Mini Hydraulic Excavator Ease of Use features improve operator efficiency minimizing fuel consumption (if equipped)

– �Cat Grade with Advanced 2D and 3D improves operator efficiency minimizing fuel consumption (if equipped)

Recycling

• The materials included in machines are categorized as below with approximate weight percentage. Because of variations of product configurations, the following values in the table may vary.

Material Type Weight Percentage Steel 65.52%

Iron 21.19%

Rubber 3.50%

Mixed Metal 2.20%

Other 1.89%

Nonferrous Metal 1.81%

Plastic 1.55%

Fluid 1.47%

Mixed-Metal and Nonmetal 0.85%

Mixed Nonmetallic 0.01%

Uncategorized 0.00%

Total 100.00%

• A machine with higher recyclability rate will ensure more efficient usage of valuable natural resources and enhance End-of-Life value of the product. According to ISO 16714 (Earth-moving machinery – Recyclability and recoverability – Terminology and calculation method), recyclability rate is defined as percentage by mass (mass fraction in percent) of the new machine potentially able to be recycled, reused or both.

All parts in the bill of material are first evaluated by component type based on a list of components defined by the ISO 16714 and Japan CEMA (Construction Equipment Manufacturers Association) standards. Remaining parts are further evaluated for recyclability based on material type.

Because of variations of product configurations, the following values in the table may vary.

Recyclability – 96%

The data provided above was based on the product configuration as provided by the individual product group.

Standard and Optional Equipment Standard and optional equipment may vary. Consult your Cat dealer for details.

Standard Optional

ENGINE

Cat C1.7 Turbo Engine (U.S. EPA Tier 4 Final/ EU Stage V)

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

OPERATOR ENVIRONMENT – CAB AND CANOPY

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

Push to Start with Bluetooth® Key

Hydraulic Lockout Controls

High Back, Suspension Seat

Retractable Seat Belt (75 mm/3 in)

Seat Belt Reminder System

Coat Hook

Cup Holder

Literature Holder

Mounting Bosses for Top and Front Guards

Signaling/Warning Horn

Cab and (left side) Boom Work Lights

Utility Space for Mobile Phone

Rain Visor

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

– �Camera Ready (IP68 and IP69K)

– �Hour Meter with Wake Up Switch

Standard Optional OPERATOR ENVIRONMENT – CAB AND CANOPY (continued)

Next Generation Advanced Monitor (Includes all items below)

– �Touch Screen

– �Site Reference System

– �High Definition Camera Capable

(IP68 and IP69K)

– �Numeric Security Code

OPERATOR ENVIRONMENT – CAB ONLY

HVAC with Automatic Temperature Control

Integrated Lower Front Window

Assisted Front Window Overhead Storage

Rear Window Emergency Exit

Cab Mirrors (vary by region)

LED Interior Light

12V Power Socket

Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)

Skylight

Jog dial interface

Air Suspension Heated Seat

TECHNOLOGY (availability varies by region)

Ease of Use Indicate

Ease of Use E-Fence

Cat Grade Advanced 2D

Cat Grade 3D

Product Link™ Basic

Product Link Elite (regulations apply)

UNDERCARRIAGE

Greased and Lubricated Track

Hydraulic Track Adjusters

Tie Down Eyes on Track Frame

Dozer Straight Blade

Dozer Angle Blade

Dozer Float

Bolt-on, Reversible Wear Edge

Rubber Tracks

Steel Tracks (450 mm/17.7 in wide)

Steel Track with Rubber Pads

(continued on next page)

AEHQ8236-03 (08-2024)

Replaces AEHQ8236-02

Build Number: 07A (North America, Chile, Europe, Aus-NZ)

For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com

© 2024 Caterpillar All rights reserved

Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Cat dealer for available options.

CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Corporate Yellow,” the “Power Edge” and Cat “Modern Hex” trade dress as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.

306 CR Mini Hydraulic Excavator

Standard and Optional Equipment (continued) Standard and optional equipment may vary. Consult your Cat dealer for details.

Standard Optional

BOOM, STICK AND LINKAGES

One Piece Boom (3055 mm/120.3 in)

Standard Stick (1580 mm/62.2 in)

Long Stick (190 mm/78 in)

Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools

Thumb Ready

Boom Lowering Control Valve (Europe only)

Stick Lowering Control Valve (Europe only)

Attachments including Buckets, Augers and Hammers

2nd Auxiliary Hydraulic Lines

Boom Lowering Check Valve

Stick Lowering Check Valve

Certified Lifting Eye

ELECTRICAL

12 Volt Electrical System

90 Ampere Alternator

650 CCA Maintenance Free Battery

Lock Out/Tag Out Battery Disconnect

Circuit Breaker

Ignition Key Stop Switch

Travel Alarm

Rear Camera

Rotating Beacon

Standard Optional

GUARDING

ROPS ISO 12117-2:2008

Top Guard ISO 10262:1998 (Level I)

Top Guard ISO 10262:1998 (Level II)

Front Guard (Mesh) ISO 10262:1998 (Level I)

Front Guard (Heavy Duty) ISO 10262:1998 (Level II)

OTHER

Locks on External Enclosure Doors

Lockable Fuel Cap

Beacon Socket

Rear Reflectors

Additional Counterweight (250 kg, 551 lb)

Additional Counterweight (500 kg, 1,103 lb)

Water Jacket Heater

Refueling Pump