New | 307.5 Mini Hydraulic Excavator

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.

Engine ModelCat C2.4 Turbo
Net Power55.9 HP
Bore3.4 in
Displacement148 in³
Gross Power - ISO 1439657.9 HP
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/126955.9 HP
Stroke4 in
Operating Weight18152 lb
Maximum Operating Weight with Cab**18152 lb
Minimum Operating Weight with Cab*16605 lb
Note (1)*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (2)**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Height17 in
Width90 in
Certification - Cab
Roll Over Protective Structure (ROPS)ISO 12117-2:2008
Tip Over Protective Structure (TOPS)ISO 12117:1997
Top GuardISO 10262:1998 (Level II)
Dimensions - Long Stick
Boom In Reach89 in
Cab Height100 in
Dig Depth183 in
Ground Clearance15 in
Maximum Blade Depth16 in
Maximum Blade Height14 in
Maximum Dig Height305 in
Maximum Dump Clearance225 in
Maximum Reach268 in
Maximum Reach - Ground Level263 in
O/A Shipping Length246 in
O/A Track Width87 in
O/A Undercarriage Length109 in
Stick Length87 in
Swing Bearing - Height30 in
Tail Swing with Counterweight79 in
Tail Swing without Counterweight71 in
Track Belt/Shoe Width18 in
Transport Height105 in
Vertical Wall162 in
Width over Upper House89 in
Dimensions - Standard Stick
Boom In Reach66 in
Cab Height100 in
Dig Depth162 in
Ground Clearance15 in
Maximum Blade Depth16 in
Maximum Blade Height14 in
Maximum Dig Height289 in
Maximum Dump Clearance208 in
Maximum Reach248 in
Maximum Reach - Ground Level242 in
O/A Shipping Length242 in
O/A Track Width87 in
O/A Undercarriage Length109 in
Stick Length66 in
Swing Bearing - Height30 in
Tail Swing with Counterweight79 in
Tail Swing without Counterweight71 in
Track Belt/Shoe Width18 in
Transport Height101 in
Vertical Wall142 in
Width over Upper House89 in
Hydraulic System
Auxiliary Circuit - Primary - Flow35 gal/min
Auxiliary Circuit - Primary - Pressure4134 psi
Auxiliary Circuit - Secondary - Flow9 gal/min
Auxiliary Circuit - Secondary - Pressure4134 psi
Digging Force - Bucket12272 lb
Digging Force - Stick - Long7579 lb
Digging Force - Stick - Standard8504 lb
Operating Pressure - Equipment4134 psi
Operating Pressure - Swing3626 psi
Operating Pressure - Travel4134 psi
Pump Flow at 2,400 rpm44 gal/min
TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump
Service Refill Capacities
Cooling System2.6 gal (US)
Engine Oil2.5 gal (US)
Fuel Tank38 gal (US)
Hydraulic System27 gal (US)
Hydraulic Tank14 gal (US)
Average Exterior Sound Pressure (ISO 6395:2008)98 dB(A)
NoteEuropean Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008)72 dB(A)
Swing System
Machine Swing Speed10 r/min
Travel System
Gradeability - Maximum30 degrees
Ground Pressure - Maximum Weight5 psi
Ground Pressure - Minimum Weight5 psi
Maximum Traction Force - High Speed5856 lb
Maximum Traction Force - Low Speed14035 lb
Travel Speed - High3.1 mile/h
Travel Speed - Low1.9 mile/h
Weight Increase from Minimum Configuration
Counterweight552 lb
Long Stick181 lb
Steel Tracks with Pads628 lb

  • 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.

  • controls Are Easy To Use And The Intuitive Next Generation Monitor Provides Customizable Machine Operator Preferences And Easy To Read Machine Information.

  • moving Around The Job Site Is Even Easier With The Cat Stick Steer Option. 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!

  • increased Lifting, Swinging, Travel And Multi-Functioning Performance Helps You Get The Job Done More Efficiently, And Dig-To-Blade Allows For Easy Clean Up.

  • 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.

  • 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.

  • 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.

  • 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.

Standard Equipment

  • 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 (–35° F)
  • 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
  • Sealed and Pressurized Cab
  • Operator Sound Pressure 72 dB(A) ISO 6396
  • 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
  • Fabric, High Back, Suspension Seat
  • Retractable Seat Belt (75 mm/3 in)
  • Coat Hook
  • Cup Holder
  • LED Interior Light
  • Literature Holder
  • 12V Power Socket
  • Radio – Bluetooth®, USB, Auxiliary, Microphone
  • Skylight
  • Mounting Bosses for Top and Front Guards
  • ROPS – ISO 12117-2:2008
  • TOPS – ISO 12117:1997
  • Top Guard – ISO 10262:1998 (Level II)
  • Color LCD Monitor
    – Fuel Level and Coolant Temperature Gauges
    – Maintenance and Machine Monitoring
    – Performance and Machine Adjustments
    – Numeric Security Code
    – Multiple Languages
    – Camera Ready
    – Hour Meter with Wake Up Switch
    – Jog Dial Control Interface
  • Greased and Lubricated Track
  • Hydraulic Track Adjusters
  • Tie Down Eyes on Track Frame
  • Dozer Blade
  • Dozer Float
  • Bolt-on, Reversible Wear Edge
  • Steel Tracks (450 mm/17.7 in wide)
  • One Piece Boom (3700 mm/145.7 in)
  • Standard Stick (1665 mm/65.6 in) or Long Stick (2200 mm/86.6 in)
  • Front Shovel Capable (Pin-On/Manual Coupler/Hydraulic Coupler – not available in all regions)
  • Thumb Ready (not available in all regions)
  • Certified Lifting Eye (not available in all regions)
  • 12 Volt Electrical System
  • 60 Ampere Alternator
  • 900 CCA Maintenance Free Battery
  • Battery Disconnect
  • Ignition Key Stop Switch
  • Signaling/Warning Horn
  • Product Link™ Elite Lite (regulations apply)
  • Travel Alarm

Optional Equipment

  • Rain Visor
  • Air Suspension Heated Seat
  • Rearview Camera
  • Rotating Beacon
  • Attachments including Buckets, Augers and Hammers
  • Steel Track with Rubber Pads
  • Wide Steel Tracks (600 mm/23.6 in)
  • 2nd Auxiliary Hydraulic Lines with Case Drain
  • Boom and Stick Hose Burst Check Valves
  • Bucket Linkage with Lift Eye
  • Track Guides
  • Water Jacket Heater
  • Refueling Pump
  • Cab Guarding









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