The Cat® 307.5 Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.
Features
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ALL DAY COMFORT
- A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.
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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.
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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!
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BIG PERFORMANCE IN A MINI DESIGN
- Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, and blade float allows for easy grading.
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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. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we’ve built into the machine.
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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.
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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.
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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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SUSTAINABILITY
- The Cat® C2.4 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 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) * or 100% renewable diesel, HVO (hydrotreated 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.
- Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
- Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
- Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
- The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
- Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
- Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).
*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)
Specifications
Units for specifications
Engine
Net Power | 54.8 hp 40.9 kW |
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Displacement | 148 in³ 2.43 l |
Gross Power - SAE J1995:2014 | 57.9 hp 43.2 kW |
Bore | 3.4 in 87 mm |
Stroke | 4 in 102.4 mm |
Rated Net Power - 2,400 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 | 54.8 hp 40.9 kW |
Engine Model | Cat C2.4 Turbo |
Weights
Operating Weight | 17905 lb 8120 kg |
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Note (2) | **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket. |
Maximum Operating Weight with Cab** | 17905 lb 8120 kg |
Minimum Operating Weight with Cab* | 16549 lb 7505 kg |
Note (1) | *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. |
Dimensions - Long Stick
Dig Depth | 182.8 in 4642 mm |
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Cab Height | 100 in 2541 mm |
Maximum Blade Height | 14.6 in 370 mm |
Track Belt/Shoe Width | 17.7 in 450 mm |
Maximum Dump Clearance | 225.1 in 5717 mm |
O/A Undercarriage Length | 108.7 in 2760 mm |
O/A Track Width | 86.6 in 2200 mm |
Vertical Wall | 161.9 in 4113 mm |
Width over Upper House | 88.6 in 2250 mm |
Boom In Reach | 88.6 in 2250 mm |
Stick Length | 86.9 in 2208 mm |
Tail Swing with Counterweight | 76 in 1930 mm |
Maximum Reach | 267.9 in 6805 mm |
Ground Clearance | 14.6 in 370 mm |
Swing Bearing - Height | 29.7 in 756 mm |
Tail Swing without Counterweight | 70.9 in 1800 mm |
Maximum Dig Height | 305.7 in 7765 mm |
Maximum Blade Depth | 16 in 407 mm |
Maximum Reach - Ground Level | 262.6 in 6670 mm |
Height - Boom Transport - No Tools | 100.4 in 2550 mm |
Overall Shipping Length - without Counterweight | 240.9 in 6120 mm |
Overall Shipping Length - with Counterweight | 246.1 in 6250 mm |
Note (1) | Boom Height when stick is pinned in transport position with no attachments. |
Height - Boom Working - With Tools | 124 in 3150 mm |
Note (2) | Boom Height when stick is pinned in working position with attachments. |
Weight Increase from Minimum Configuration
Long Stick | 181 lb 82 kg |
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Counterweight | 552 lb 250 kg |
Steel Tracks with Pads | 628 lb 285 kg |
Travel System
Maximum Traction Force - Low Speed | 14035 lb 62.4 kN |
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Maximum Traction Force - High Speed | 5856 lb 26.1 kN |
Travel Speed - High | 3.1 mile/h 5 km/h |
Ground Pressure - Maximum Weight | 5.5 psi 37.7 kPa |
Travel Speed - Low | 1.9 mile/h 3.1 km/h |
Gradeability - Maximum | 30 degrees |
Ground Pressure - Minimum Weight | 5.1 psi 34.8 kPa |
Service Refill Capacities
Cooling System | 2.6 gal (US) 10 l |
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Hydraulic System | 29 gal (US) 110 l |
Hydraulic Tank | 14 gal (US) 53 l |
Fuel Tank | 38 gal (US) 145 l |
Engine Oil | 2.5 gal (US) 9.5 l |
Hydraulic System
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
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Operating Pressure - Swing | 3626 psi 250 bar |
Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Pump Flow at 2,400 rpm | 44 gal/min 167 l/min |
Digging Force - Stick - Standard | 8504 lb 37.8 kN |
Operating Pressure - Travel | 4134 psi 285 bar |
Operating Pressure - Equipment | 4134 psi 285 bar |
Digging Force - Stick - Long | 7579 lb 33.7 kN |
Digging Force - Bucket | 12272 lb 54.6 kN |
Maximum Auxiliary Circuit - Secondary - Flow at Pump | 9 gal/min 33 l/min |
Maximum Auxiliary Circuit - Secondary - Pressure at Pump | 4134 psi 285 bar |
Maximum Auxiliary Circuit - Primary - Flow at Pump | 35 gal/min 131 l/min |
Maximum Auxiliary Circuit - Primary - Pressure at Pump | 4134 psi 285 bar |
Swing System
Machine Swing Speed | 10 r/min 10 r/min |
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Blade
Height | 17 in 431 mm |
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Width | 90 in 2280 mm |
Certification - Cab
Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
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Top Guard | ISO 10262:1998 (Level I) |
Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
Sound
Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) 72 dB(A) |
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Average Exterior Sound Pressure (ISO 6395:2008) | 98 dB(A) 98 dB(A) |
Note | European Union Directive “2000/14/EC” |
Air Conditioning System
Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains .90 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes. |
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Dimensions - Standard Stick
Tail Swing with Counterweight | 76 in 1930 mm |
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Vertical Wall | 141.6 in 3597 mm |
Tail Swing without Counterweight | 70.9 in 1800 mm |
Stick Length | 65.6 in 1665 mm |
Boom In Reach | 66.2 in 1681 mm |
Track Belt/Shoe Width | 17.7 in 450 mm |
Ground Clearance | 14.6 in 370 mm |
O/A Track Width | 86.6 in 2200 mm |
Maximum Reach - Ground Level | 242.1 in 6151 mm |
O/A Undercarriage Length | 108.7 in 2760 mm |
Width over Upper House | 88.6 in 2250 mm |
Maximum Reach | 247.9 in 6297 mm |
Swing Bearing - Height | 29.7 in 756 mm |
Maximum Blade Height | 14.6 in 370 mm |
Maximum Blade Depth | 16 in 407 mm |
Dig Depth | 161.4 in 4100 mm |
Maximum Dump Clearance | 208.6 in 5300 mm |
Cab Height | 100 in 2541 mm |
Maximum Dig Height | 289.3 in 7348 mm |
Height - Boom Working - With Tools | 107.5 in 2730 mm |
Overall Shipping Length - with Counterweight | 245.3 in 6230 mm |
Note (2) | Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position. |
Overall Shipping Length - without Counterweight | 240.2 in 6100 mm |
Height - Boom Transport - No Tools | 101.2 in 2570 mm |
Note (1) | Boom Height when stick is pinned in transport position with no attachments. |
Sustainability
Recyclability | 96% |
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Standard Equipment
ENGINE
- Cat C2.4 Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo,Diesel Particulate Filter (DPF)
- 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 ( –37° F)
HYDRAULICS
- Smart Tech Electronic Pump
- Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO™ Advanced Hydraulic Oil
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 (cab machines only)
– 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
TECHNOLOGY (availability varies by region)
- Product Link™ Basic
UNDERCARRIAGE
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Straight Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
BOOM, STICK AND LINKAGES
- One Piece Boom (3700 mm/145.7 in)
- Standard Stick (1665 mm/65.6 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools
- Thumb Ready (not available in all regions)
- Certified Lifting Eye (optional in some regions)
ELECTRICAL
- 12 Volt Electrical System
- 90 Ampere Alternator
- 900 CCA Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- Ignition Key Stop Switch
- Travel Alarm
- Rear and Side 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
OPERATOR ENVIRONMENT
- Air Suspension Heated Seat
- Seat Belt Reminder System
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
– Jog Dial Control Interface
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 and IP69K)
– Numeric Security Code
TECHNOLOGY (availability varies by region)
- Ease of Use Indicate
- Ease of Use E-Fence
- Cat Grade Advanced 2D
- Cat Grade 3D
- Product Link Elite (regulations apply)
UNDERCARRIAGE
- 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 (2200 mm/86.6 in)
- Attachments including Buckets, Augers and Hammers
- Certified Lifting Eye (optional in some regions)
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
- Water Jacket Heater
- Refueling Pump
Videos
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Introducing the Next Generation Cat 7-10 Ton Mini Excavators -
Overview of the Next Generation Cat 7-10 Ton Mini Excavators -
Standard Monitor on the Next Generation Cat Mini Excavators -
Stick Steer on the Cat Next Generation Mini Excavators -
Daily Maintenance and Inspection on the Cat 7-10 Ton Mini Excavators -
Safety Features on the Cat 7-10 Ton Mini Excavators
Documents
- 307.5 Product Brochure
- 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