Overview
The Cat® 306 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.
Specifications
Units:
| Net Power | — |
| Operating Weight | — |
| Dig Depth | — |
Benefits & Features
ALL DAY COMFORT
- The 306 CR VAB features 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. Travel with improved ergonomics, less effort and improved control is in your hands!
May 4, 2026
Specifications
Units:
| Net Power | — |
| Engine Model | Cat C2.4 Turbo |
| Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 | — |
| Gross Power - ISO 14396 | — |
| Bore | — |
| Stroke | — |
| Displacement | — |
| Note 1 | Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan. |
| Note 2 | Advertised power is tested per the specific standard in effect at the time of manufacture. |
| Operating Weight | — |
| Minimum Operating Weight with Cab* | — |
| Maximum Operating Weight with Cab** | — |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade and no bucket. |
| Note (2) | **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, straight blade and no bucket. |
| Counterweight | — |
| Long Stick | — |
| Steel Tracks with Pads | — |
| Travel Speed - High | — |
| Travel Speed - Low | — |
| Maximum Traction Force - High Speed | — |
| Maximum Traction Force - Low Speed | — |
| Ground Pressure - Minimum Weight | — |
| Ground Pressure - Maximum Weight | — |
| Gradeability - Maximum | 30 degrees |
| Cooling System | — |
| Engine Oil | — |
| Fuel Tank | — |
| Hydraulic Tank | — |
| Hydraulic System | — |
| Pump Flow at 2,400 rpm | — |
| Operating Pressure - Equipment | — |
| Operating Pressure - Travel | — |
| Operating Pressure - Swing | — |
| Auxiliary Circuit - Primary - Flow | — |
| Auxiliary Circuit - Primary - Pressure | — |
| Auxiliary Circuit - Secondary - Flow | — |
| Auxiliary Circuit - Secondary - Pressure | — |
| Digging Force - Stick - Standard | — |
| Digging Force - Stick - Long | — |
| Digging Force - Bucket | — |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Machine Swing Speed | — |
| Boom Swing - Left | 60 degrees |
| Boom Swing - Right | 65 degrees |
| Straight Blade Width | — |
| Straight Blade Height | — |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Top Guard | ISO 10262:1998 - Level II (Optional) |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
| Dig Depth | — |
| Vertical Wall | — |
| Maximum Reach at Ground Level | — |
| Maximum Reach | — |
| Maximum Dig Height | — |
| Maximum Dump Clearance | — |
| Boom in Reach | — |
| Tail Swing with Counterweight | — |
| Tail Swing without Counterweight | — |
| Maximum Blade Height | — |
| Maximum Blade Depth | — |
| Boom Height in Shipping Position with Attachment* | — |
| Boom Height in Shipping Position without Attachment* | — |
| Cab Height | — |
| Swing Bearing Height | — |
| Overall Undercarriage Length | — |
| Overall Shipping Length with Counterweight with Attachment* | — |
| Overall Shipping Length with Counterweight without Attachment* | — |
| Overall Shipping Length without Counterweight with Attachment* | — |
| Overall Shipping Length without Counterweight without Attachment* | — |
| Boom Swing Right | — |
| Boom Swing Left | — |
| Track Belt/Shoe Width | — |
| Overall Track Width | — |
| Width Over Upper House | — |
| Ground Clearance | — |
| Stick Length | — |
| Note | *VAB not at minimum or maximum position; it is at an intermediate position to reduce linkage height. |
| Dig Depth | — |
| Vertical Wall | — |
| Maximum Reach at Ground Level | — |
| Maximum Reach | — |
| Maximum Dig Height | — |
| Maximum Dump Clearance | — |
| Boom in Reach | — |
| Tail Swing with Counterweight | — |
| Tail Swing without Counterweight | — |
| Maximum Blade Height | — |
| Maximum Blade Depth | — |
| Boom Height in Shipping Position with Attachment* | — |
| Boom Height in Shipping Position without Attachment* | — |
| Cab Height | — |
| Swing Bearing Height | — |
| Overall Undercarriage Length | — |
| Overall Shipping Length with Counterweight with Attachment* | — |
| Overall Shipping Length with Counterweight without Attachment* | — |
| Overall Shipping Length without Counterweight with Attachment* | — |
| Overall Shipping Length without Counterweight without Attachment* | — |
| Boom Swing Right | — |
| Boom Swing Left | — |
| Track Belt/Shoe Width | — |
| Overall Track Width | — |
| Width Over Upper House | — |
| Ground Clearance | — |
| Stick Length | — |
| Note | *VAB not at minimum or maximum position; it is at an intermediate position to reduce linkage height. |
| Dig Depth | — |
| Vertical Wall | — |
| Maximum Reach at Ground Level | — |
| Maximum Reach | — |
| Maximum Dig Height | — |
| Maximum Dump Clearance | — |
| Boom in Reach | — |
| Tail Swing with Counterweight | — |
| Tail Swing without Counterweight | — |
| Maximum Blade Height | — |
| Maximum Blade Depth | — |
| Boom Height in Shipping Position without Attachment* | — |
| Cab Height | — |
| Swing Bearing Height | — |
| Overall Undercarriage Length | — |
| Overall Shipping Length with Counterweight with Attachment* | — |
| Overall Shipping Length with Counterweight without Attachment* | — |
| Overall Shipping Length without Counterweight with Attachment* | — |
| Boom Swing Right | — |
| Boom Swing Left | — |
| Track Belt/Shoe Width | — |
| Overall Track Width | — |
| Width Over Upper House | — |
| Ground Clearance | — |
| Stick Length | — |
| Note | *VAB not at minimum or maximum position; it is at an intermediate position to reduce linkage height. |
| Dig Depth | — |
| Vertical Wall | — |
| Maximum Reach at Ground Level | — |
| Maximum Reach | — |
| Maximum Dig Height | — |
| Maximum Dump Clearance | — |
| Boom in Reach | — |
| Tail Swing with Counterweight | — |
| Tail Swing without Counterweight | — |
| Maximum Blade Height | — |
| Maximum Blade Depth | — |
| Boom Height in Shipping Position with Attachment* | — |
| Boom Height in Shipping Position without Attachment* | — |
| Cab Height | — |
| Swing Bearing Height | — |
| Overall Undercarriage Length | — |
| Overall Shipping Length with Counterweight with Attachment* | — |
| Overall Shipping Length with Counterweight without Attachment* | — |
| Overall Shipping Length without Counterweight with Attachment* | — |
| Overall Shipping Length without Counterweight without Attachment* | — |
| Boom Swing Right | — |
| Boom Swing Left | — |
| Track Belt/Shoe Width | — |
| Overall Track Width | — |
| Width Over Upper House | — |
| Ground Clearance | — |
| Stick Length | — |
| Note | *VAB not at minimum or maximum position; it is at an intermediate position to reduce linkage height. |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes. |
| Operator Sound Pressure (ISO 6396:2008) | — |
| Average Exterior Sound Pressure (ISO 6395:2008) | — |
| Note | European Union Directive “2000/14/EC” |
| Recyclability | 96% |
Benefits & Features
ALL DAY COMFORT
- The 306 CR VAB features 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. Travel with improved ergonomics, less effort and improved control is in your hands!
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.
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Standard Equipment
- 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
- 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
- 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
- Hydraulic Lockout Controls
- High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- 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
- Next Generation Color LCD Monitor (IP66)<br>– Fuel Level and Coolant Temperature Gauges<br>– Maintenance and Machine Monitoring<br>– Performance and Machine Adjustments<br>– Numeric Security Code<br>– Multiple Languages<br>– Camera Ready (IP68 & IP69K)<br>– Hour Meter with Wake Up Switch
- OPERATOR ENVIRONMENT – CAB ONLY
- Operator Sound Pressure 72 dB(A) ISO 6396:2008
- HVAC with Automatic Temperature Control
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- LED Interior Light
- 12V Power Socket
- Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only)
- Skylight
- Jog dial interface
- TECHNOLOGY
- Product Link™ Elite (regulations apply)
- UNDERCARRIAGE
- Greased and Lubricated Track
- Hydraulic Track Adjusters
- Tie Down Eyes on Track Frame
- Dozer Straight Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
- Rubber Tracks
- BOOM, STICK AND LINKAGES
- Variable Angle Boom
- Standard Stick (1580 mm/62.2 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools
- Thumb Ready
- 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
- Signaling/Warning Horn
- Travel Alarm
- Rear Camera
- 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 – CAB
- Push to Start with Bluetooth® Key
- Seat Belt Reminder System
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)<br>– Touch Screen<br>– Site Reference System<br>– High Definition Camera Capable (IP68 & IP69K)<br>– Numeric Security Code
- OPERATOR ENVIRONMENT – CAB ONLY
- Air Suspension Heated Seat
- TECHNOLOGY
- Ease of Use Indicate
- Ease of Use E-Fence
- Ease of Use Laser Catcher
- Cat Grade Advanced 2D
- Cat Grade 3D
- UNDERCARRIAGE
- Steel Tracks (450 mm/17.7 in wide)
- Steel Track with Rubber Pads
- BOOM, STICK AND LINKAGES
- Long Stick (190 mm/78 in)
- Attachments including Buckets, Augers and Hammers
- ELECTRICAL
- 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
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump
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| Model | Width | ||
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