307.5 - Tier 4 / Stage V

307.5 Mini Hydraulic Excavator

The 307.5 Mini Excavator delivers power and performance in a 7 ton size class to help you work in a wide range of applications.

307.5 - Tier 4 / Stage V

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.

Net Power

54.8 hp / 40.9 kW

Operating Weight

17905 lb / 8120 kg

Dig Depth

161.4 in / 4100 mm
  • Specifications
  • Standard / Optional Features
  • Overview
    • Long Name -307.5 Mini Hydraulic Excavator
    • Name -307.5 - Tier 4 / Stage V
    • Brand -Caterpillar
    • Status -Current
  • Engine
    • Net Power - 54.8 hp / 40.9 kW
    • 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
    • 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
    • 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
    • Counterweight - 552 lb / 250 kg
    • Steel Tracks with Pads - 628 lb / 285 kg
  • Travel System
    • Maximum Traction Force - Low Speed - 14035 lbf / 62.4 kN
    • Maximum Traction Force - High Speed - 5856 lbf / 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
    • 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
    • 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 gpm / 167 L/min
    • Digging Force - Stick - Standard - 8504 lbf / 37.8 kN
    • Operating Pressure - Travel - 4134 psi / 285 bar
    • Operating Pressure - Equipment - 4134 psi / 285 bar
    • Digging Force - Stick - Long - 7579 lbf / 33.7 kN
    • Digging Force - Bucket - 12272 lbf / 54.6 kN
    • Maximum Auxiliary Circuit - Secondary - Flow at Pump - 9 gpm / 33 L/min
    • Maximum Auxiliary Circuit - Secondary - Pressure at Pump - 4134 psi / 285 bar
    • Maximum Auxiliary Circuit - Primary - Flow at Pump - 35 gpm / 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
  • Blade
    • Height - 17 in / 431 mm
    • Width - 90 in / 2280 mm
  • Certification - Cab
    • Roll Over Protective Structure (ROPS) - ISO 12117-2:2008
    • 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)
    • 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.
  • Dimensions - Standard Stick
    • Tail Swing with Counterweight - 76 in / 1930 mm
    • 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%
  • 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