US
Metric

Overview

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

Engine Model
Cat C2.4 Turbo
Net Power
54.80 HP
40.90 kW

Weights

Operating Weight
17905.00 lb
8120.00 kg

Blade

Height
17.00 in
431.00 mm
Width
90.00 in
2280.00 mm

Certification - Cab

Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level I)

Dimensions - Long Stick

Boom In Reach
88.60 in
2250.00 mm
Boom Swing - Left
0.00 °
0.00 °
Boom Swing - Right
0.00 °
0.00 °
Cab Height
100.00 in
2541.00 mm
Dig Depth
182.80 in
4642.00 mm
Ground Clearance
14.60 in
370.00 mm
Maximum Blade Depth
16.00 in
407.00 mm
Maximum Blade Height
14.60 in
370.00 mm
Maximum Dig Height
305.70 in
7765.00 mm
Maximum Dump Clearance
225.10 in
5717.00 mm
Maximum Reach
267.90 in
6805.00 mm
Maximum Reach - Ground Level
262.60 in
6670.00 mm
O/A Shipping Length
246.00 in
6257.00 mm
O/A Track Width
86.60 in
2200.00 mm
O/A Undercarriage Length
108.70 in
2760.00 mm
Stick Length
86.90 in
2208.00 mm
Swing Bearing - Height
29.70 in
756.00 mm
Tail Swing with Counterweight
76.00 in
1930.00 mm
Tail Swing without Counterweight
70.90 in
1800.00 mm
Track Belt/Shoe Width
17.70 in
450.00 mm
Transport Height
105.00 in
2656.00 mm
Vertical Wall
161.90 in
4113.00 mm
Width over Upper House
88.60 in
2250.00 mm

Dimensions - Standard Stick

Boom In Reach
66.20 in
1681.00 mm
Boom Swing - Left
0.00 °
0.00 °
Boom Swing - Right
0.00 °
0.00 °
Cab Height
100.00 in
2541.00 mm
Dig Depth
161.40 in
4100.00 mm
Ground Clearance
14.60 in
370.00 mm
Maximum Blade Depth
16.00 in
407.00 mm
Maximum Blade Height
14.60 in
370.00 mm
Maximum Dig Height
289.30 in
7348.00 mm
Maximum Dump Clearance
208.60 in
5300.00 mm
Maximum Reach
247.90 in
6297.00 mm
Maximum Reach - Ground Level
242.10 in
6151.00 mm
O/A Shipping Length
242.00 in
6144.00 mm
O/A Track Width
86.60 in
2200.00 mm
O/A Undercarriage Length
108.70 in
2760.00 mm
Stick Length
65.60 in
1665.00 mm
Swing Bearing - Height
29.70 in
756.00 mm
Tail Swing with Counterweight
76.00 in
1930.00 mm
Tail Swing without Counterweight
70.90 in
1800.00 mm
Track Belt/Shoe Width
17.70 in
450.00 mm
Transport Height
101.00 in
2558.00 mm
Vertical Wall
141.60 in
3597.00 mm
Width over Upper House
88.60 in
2250.00 mm

Engine

Bore
3.40 in
87.00 mm
Displacement
148.00 in³
2.43 l
Gross Power - ISO 14396
57.90 HP
43.20 kW
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269
55.90 HP
41.70 kW
Stroke
4.00 in
102.40 mm

Hydraulic System

Auxiliary Circuit - Primary - Flow
35.00 gal/min
131.00 l/min
Auxiliary Circuit - Primary - Pressure
4134.00 psi
285.00 bar
Auxiliary Circuit - Secondary - Flow
9.00 gal/min
33.00 l/min
Auxiliary Circuit - Secondary - Pressure
4134.00 psi
285.00 bar
Digging Force - Bucket
12272.00 lb
54.60 kN
Digging Force - Stick - Long
7579.00 lb
33.70 kN
Digging Force - Stick - Standard
8504.00 lb
37.80 kN
Operating Pressure - Equipment
4134.00 psi
285.00 bar
Operating Pressure - Swing
3626.00 psi
250.00 bar
Operating Pressure - Travel
4134.00 psi
285.00 bar
Pump Flow at 2,400 rpm
44.00 gal/min
167.00 l/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

Cooling System
2.60 gal (US)
10.00 l
Engine Oil
2.50 gal (US)
9.50 l
Fuel Tank
38.00 gal (US)
145.00 l
Hydraulic System
29.00 gal (US)
110.00 l
Hydraulic Tank
14.00 gal (US)
53.00 l

Sound

Average Exterior Sound Pressure (ISO 6395:2008)
98.00 dB(A)
98.00 dB(A)
Note
European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008)
72.00 dB(A)
72.00 dB(A)

Swing System

Machine Swing Speed
10.00 r/min
10.00 r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
5.50 psi
37.70 kPa
Ground Pressure - Minimum Weight
5.10 psi
34.80 kPa
Maximum Traction Force - High Speed
5856.00 lb
26.10 kN
Maximum Traction Force - Low Speed
14035.00 lb
62.40 kN
Travel Speed - High
3.10 mile/h
5.00 km/h
Travel Speed - Low
1.90 mile/h
3.10 km/h

Weight Increase from Minimum Configuration

Counterweight
552.00 lb
250.00 kg
Long Stick
181.00 lb
82.00 kg
Steel Tracks with Pads
628.00 lb
285.00 kg

Weights

Maximum Operating Weight with Cab**
17905.00 lb
8120.00 kg
Minimum Operating Weight with Cab*
16549.00 lb
7505.00 kg
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.

Engine

Gross Power - SAE J1995
57.90 HP
43.20 kW
Rated Net Power - 2,400 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
54.80 HP
40.90 kW

Hydraulic System

Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9.00 gal/min
33.00 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35.00 gal/min
131.00 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134.00 psi
285.00 bar

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

Height - Boom Working - With Tools
107.50 in
2730.00 mm
Overall Shipping Length - with Counterweight
245.30 in
6230.00 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
240.20 in
6100.00 mm
Height - Boom Transport - No Tools
101.20 in
2570.00 mm
Note (1)
Boom Height when stick is pinned in transport position with no attachments.

Dimensions - Long Stick

Height - Boom Transport - No Tools
100.40 in
2550.00 mm
Overall Shipping Length - without Counterweight
240.90 in
6120.00 mm
Overall Shipping Length - with Counterweight
246.10 in
6250.00 mm
Note (1)
Boom Height when stick is pinned in transport position with no attachments.
Height - Boom Working - With Tools
124.00 in
3150.00 mm
Note (2)
Boom Height when stick is pinned in working position with attachments.
Features

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.

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.

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!

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.

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.

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.

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.

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.
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
    • 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 & IP69K)
      – Hour Meter with Wake Up Switch
  • 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
    • Battery Disconnect
    • Ignition Key Stop Switch
    • Product Link™ Basic (regulations apply)
    • Travel Alarm
  • OTHER
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors
Optional Equipment
  • OPERATOR ENVIRONMENT
    • 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
  • 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
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Bucket Linkage with Lift Eye
  • ELECTRICAL
    • Product Link Elite (regulations apply)
    • Rearview 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
    • Water Jacket Heater
    • Refueling Pump