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307.5 Mini Hydraulic Excavator

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.

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Net Power54.8hp

Engine ModelCat C2.4 Turbo


Gross Power - SAE J199557.9hp



Rated Net Power - 2,400 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/126954.8hp

Operating Weight17905lb

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**17905lb

Minimum Operating Weight with Cab*16549lb

Note (1)*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.

Dig Depth182.8in

Cab Height100in

Maximum Blade Height14.6in

Track Belt/Shoe Width17.7in

Maximum Dump Clearance225.1in

O/A Undercarriage Length108.7in

O/A Track Width86.6in

Vertical Wall161.9in

Width over Upper House88.6in

Boom In Reach88.6in

Stick Length86.9in

Tail Swing with Counterweight76in

Maximum Reach267.9in

Ground Clearance14.6in

Swing Bearing - Height29.7in

Tail Swing without Counterweight70.9in

Maximum Dig Height305.7in

Maximum Blade Depth16in

Maximum Reach - Ground Level262.6in

Height - Boom Transport - No Tools100.4in

Overall Shipping Length - without Counterweight240.9in

Overall Shipping Length - with Counterweight246.1in

Note (1)Boom Height when stick is pinned in transport position with no attachments.

Height - Boom Working - With Tools124in

Note (2)Boom Height when stick is pinned in working position with attachments.



Tail Swing with Counterweight76in

Vertical Wall141.6in

Tail Swing without Counterweight70.9in

Stick Length65.6in

Boom In Reach66.2in

Track Belt/Shoe Width17.7in

Ground Clearance14.6in

O/A Track Width86.6in

Maximum Reach - Ground Level242.1in

O/A Undercarriage Length108.7in

Width over Upper House88.6in

Maximum Reach247.9in

Swing Bearing - Height29.7in

Maximum Blade Height14.6in

Maximum Blade Depth16in

Dig Depth161.4in

Maximum Dump Clearance208.6in

Cab Height100in

Maximum Dig Height289.3in

Height - Boom Working - With Tools107.5in

Overall Shipping Length - with Counterweight245.3in

Note (2)Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.

Overall Shipping Length - without Counterweight240.2in

Height - Boom Transport - No Tools101.2in

Note (1)Boom Height when stick is pinned in transport position with no attachments.


Long Stick181lb


Steel Tracks with Pads628lb

Maximum Traction Force - Low Speed14035lb

Maximum Traction Force - High Speed5856lb

Travel Speed - High3.1mile/h

Ground Pressure - Maximum Weight5.5psi

Travel Speed - Low1.9mile/h

Gradeability - Maximum30 degrees

Ground Pressure - Minimum Weight5.1psi

Cooling System2.6gal (US)

Hydraulic System29gal (US)

Hydraulic Tank14gal (US)

Fuel Tank38gal (US)

Engine Oil2.5gal (US)

TypeLoad Sensing Hydraulics with Variable Displacement Piston Pump

Operating Pressure - Swing3626psi

NoteFlow and pressure are not combinable. Under load, as flow rises pressure goes down.

Pump Flow at 2,400 rpm44gal/min

Digging Force - Stick - Standard8504lb

Operating Pressure - Travel4134psi

Operating Pressure - Equipment4134psi

Digging Force - Stick - Long7579lb

Digging Force - Bucket12272lb

Maximum Auxiliary Circuit - Secondary - Flow at Pump9gal/min

Maximum Auxiliary Circuit - Secondary - Pressure at Pump4134psi

Maximum Auxiliary Circuit - Primary - Flow at Pump35gal/min

Maximum Auxiliary Circuit - Primary - Pressure at Pump4134psi

Machine Swing Speed10r/min

Roll Over Protective Structure (ROPS)ISO 12117-2:2008

Top GuardISO 10262:1998 (Level I)

Tip Over Protective Structure (TOPS)ISO 12117:1997

Operator Sound Pressure (ISO 6396:2008)72dB(A)

Average Exterior Sound Pressure (ISO 6395:2008)98dB(A)

NoteEuropean Union Directive “2000/14/EC”

Air ConditioningThe 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.


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)


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


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

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)


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 & IP69K)
– Hour Meter with Wake Up Switch


Air Suspension Heated Seat

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 & IP69K)
– Numeric Security Code


Greased and Lubricated Track

Tie Down Eyes on Track Frame

Dozer Straight Blade

Dozer Float

Bolt-on, Reversible Wear Edge


Steel Tracks (450 mm/17.7 in wide)

Wide Steel Tracks (600 mm/23.6 in)

Steel Track with Rubber Pads

Track Guides


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)


Long Stick (2200 mm/86.6 in)

Attachments including Buckets, Augers and Hammers

2nd Auxiliary Hydraulic Lines

Boom Lowering Check Valve

Stick Lowering Check Valve

Bucket Linkage with Lift Eye


12 Volt Electrical System

90 Ampere Alternator

900 CCA Maintenance Free Battery

Battery Disconnect

Ignition Key Stop Switch

Product Link Basic (regulations apply)

Travel Alarm


Product Link Elite (regulations apply)

Rearview Camera

Rotating Beacon


Locks on External Enclosure Doors

Lockable Fuel Cap

Beacon Socket

Rear Reflectors


Water Jacket Heater

Refueling Pump


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

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