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Caterpillar
306 CR Mini Hydraulic Excavator
Net Power
55.9 HP
41.7 kW
Dig Depth
162 in
4110 mm
Overview
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.
Media
Photos
Details
Specifications
Engine
Spec | Value |
---|---|
Net Power | 55.9 HP 41.7 kW |
Gross Power – ISO 14396 | 57.9 HP 43.2 kW |
Displacement | 148 in³ 2.43 l |
Bore | 3.4 in 87 mm |
Stroke | 4 in 102.4 mm |
Engine Model | Cat C2.4 Turbo Cat C2.4 Turbo |
Net Power @ 2,200 rpm – U.S. EPA Tier 4 Final/EU Stage V – ISO 9249/EEC 80/1269 | 55.9 HP 41.7 kW |
Weights
Spec | Value |
---|---|
Minimum Operating Weight with Canopy* | 14134 lb 6410 kg |
Maximum Operating Weight with Canopy** | 15633 lb 7090 kg |
Note (2) | **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket. **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket. |
Maximum Operating Weight with Cab** | 15766 lb 7150 kg |
Minimum Operating Weight with Cab* | 14266 lb 6470 kg |
Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. |
Weight Increase from Minimum Configuration
Spec | Value |
---|---|
Counterweight | 551 lb 250 kg |
Long Stick | 97 lb 44 kg |
Steel Tracks with Pads | 827 lb 375 kg |
Angle Blade | 225 lb 102 kg |
XTC Carriage (no tool) | 141 lb 64 kg |
Travel System
Spec | Value |
---|---|
Ground Pressure – Minimum Weight | 5.1 psi 35.4 kPa |
Ground Pressure – Maximum Weight | 5.7 psi 39.1 kPa |
Gradeability – Maximum | 30 degrees 30 degrees |
Maximum Traction Force – High Speed | 6969 lbf 31 kN |
Maximum Traction Force – Low Speed | 12589 lbf 56 kN |
Travel Speed – High | 3.1 mile/h 5 km/h |
Travel Speed – Low | 1.7 mile/h 2.8 km/h |
Service Refill Capacities
Spec | Value |
---|---|
Cooling System | 2.6 gal (US) 10 l |
Hydraulic System | 27.5 gal (US) 104 l |
Hydraulic Tank | 14 gal (US) 53 l |
Engine Oil | 2.1 gal (US) 8 l |
Fuel Tank | 34.3 gal (US) 130 l |
Hydraulic System
Spec | Value |
---|---|
Operating Pressure – Travel | 3553 psi 24500 kPa |
Auxiliary Circuit – Primary – Flow | 24 gal/min 90 l/min |
Digging Force – Bucket | 11578 lbf 51.5 kN |
Auxiliary Circuit – Primary – Pressure | 3553 psi 24500 kPa |
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump |
Auxiliary Circuit – Secondary – Flow | 9 gal/min 33 l/min |
Operating Pressure – Equipment | 3553 psi 24500 kPa |
Auxiliary Circuit – Secondary – Pressure | 3553 psi 24500 kPa |
Digging Force – Stick – Standard | 6632 lbf 29.5 kN |
Operating Pressure – Swing | 3263 psi 22500 kPa |
Digging Force – Stick – Long | 5957 lbf 26.5 kN |
Pump Flow at 2,400 rpm | 40 gal/min 151 l/min |
Swing System
Spec | Value |
---|---|
Boom Swing – Right | 65 degrees 65 degrees |
Boom Swing – Left | 60 degrees 60 degrees |
Machine Swing Speed | 11 r/min 11 r/min |
Blade
Spec | Value |
---|---|
Straight Blade Width | 78 in 1980 mm |
Angle Blade Width | 78 in 1980 mm |
Straight Blade Height | 15.4 in 390 mm |
Angle Blade Height | 15.7 in 400 mm |
Certification - Cab
Spec | Value |
---|---|
Top Guard | ISO 10262:1998 (Level II) ISO 10262:1998 (Level II) |
Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 ISO 12117-2:2008 |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 ISO 12117:1997 |
Sound
Spec | Value |
---|---|
Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) 72 dB(A) |
Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) 99 dB(A) |
Note | European Union Directive “2000/14/EC” European Union Directive “2000/14/EC” |
Dimensions - Standard Stick
Spec | Value |
---|---|
Track Belt/Shoe Width | 16 in 400 mm |
Maximum Reach | 248 in 6295 mm |
Stick Length | 62 in 1580 mm |
Vertical Wall | 107 in 2710 mm |
Swing Bearing – Height | 27 in 672 mm |
Maximum Reach – Ground Level | 241 in 6130 mm |
Maximum Blade Height | 16 in 415 mm |
Ground Clearance | 12 in 306 mm |
Boom In Reach | 98 in 2485 mm |
Boom Swing – Right | 36 in 910 mm |
Transport Height | 69 in 1755 mm |
Tail Swing with Counterweight | 58 in 1475 mm |
Cab Height | 100 in 2545 mm |
Width over Upper House | 77 in 1950 mm |
Maximum Dump Clearance | 170 in 4325 mm |
Tail Swing without Counterweight | 53 in 1350 mm |
Boom Swing – Left | 29 in 735 mm |
O/A Undercarriage Length | 102 in 2580 mm |
Maximum Dig Height | 230 in 5835 mm |
Maximum Blade Depth | 24 in 600 mm |
O/A Track Width | 78 in 1980 mm |
Dig Depth | 146 in 3710 mm |
O/A Shipping Length | 235 in 5975 mm |
Dimensions - Long Stick
Spec | Value |
---|---|
Dig Depth | 162 in 4110 mm |
Maximum Blade Height | 16 in 415 mm |
O/A Track Width | 78 in 1980 mm |
Track Belt/Shoe Width | 16 in 400 mm |
Tail Swing with Counterweight | 58 in 1475 mm |
Vertical Wall | 125 in 3165 mm |
Boom In Reach | 117 in 2960 mm |
Maximum Blade Depth | 24 in 600 mm |
Maximum Dig Height | 241 in 6130 mm |
Transport Height | 95 in 2410 mm |
Stick Length | 78 in 1980 mm |
Ground Clearance | 12 in 306 mm |
Swing Bearing – Height | 27 in 672 mm |
Width over Upper House | 77 in 1950 mm |
O/A Undercarriage Length | 102 in 2580 mm |
O/A Shipping Length | 234 in 5950 mm |
Cab Height | 100 in 2545 mm |
Maximum Reach | 263 in 6685 mm |
Boom Swing – Left | 29 in 735 mm |
Tail Swing without Counterweight | 53 in 1350 mm |
Boom Swing – Right | 36 in 910 mm |
Maximum Dump Clearance | 182 in 4610 mm |
Maximum Reach – Ground Level | 257 in 6535 mm |
Air Conditioning System
Spec | Value |
---|---|
Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1287). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1287). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes. |
Sustainability
Spec | Value |
---|---|
Recyclability | 96% 96% |
Standard Equipment
OPERATOR ENVIRONMENT – CAB AND CANOPY
- 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
- 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)
– 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
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
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
- One Piece Boom (3055 mm/120.3 in)
- Standard Stick (1580 mm/62.2 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools
- Thumb Ready
ELECTRICAL
- 12 Volt Electrical System
- 90 Ampere Alternator
- 650 CCA Maintenance Free Battery
- Battery Disconnect
- Circuit Breaker
- Ignition Key Stop Switch
- Signaling/Warning Horn
- Product Link™ Basic (regulations apply)
- Travel Alarm
OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Optional Equipment
OPERATOR ENVIRONMENT – CAB AND CANOPY
- 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
OPERATOR ENVIRONMENT – CAB ONLY
- Cab Heat Only
- Air Suspension Heated Seat
UNDERCARRIAGE
- Angle Blade
- Extra Tool Carrier (XTC)
- 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
- 2nd Auxiliary Hydraulic Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
ELECTRICAL
- Product Link Elite (regulations apply)
- Camera
- Rotating Beacon
GUARDING
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Mesh Front Guard ISO 10262 1998 Level I
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A (Cab Only)
- Track Guards
OTHER
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump