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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.

Net Power
54.8 HP
Operating Weight
17905 lb
Dig Depth
182.8 in
Engine Model
Cat C2.4 Turbo

Engine

Net Power
54.8HP
Engine Model
Cat C2.4 Turbo
Displacement
148in³
Gross Power - SAE J1995
57.9HP
Bore
3.4in
Stroke
4in
Rated Net Power - 2,400 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
54.8HP

Weights

Operating Weight
17905lb
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.

Dimensions - Long Stick

Dig Depth
182.8in
Cab Height
100in
Maximum Blade Height
14.6in
Track Belt/Shoe Width
17.7in
Maximum Dump Clearance
225.1in
O/A Undercarriage Length
108.7in
O/A Track Width
86.6in
Vertical Wall
161.9in
Width over Upper House
88.6in
Boom In Reach
88.6in
Stick Length
86.9in
Tail Swing with Counterweight
76in
Maximum Reach
267.9in
Ground Clearance
14.6in
Swing Bearing - Height
29.7in
Tail Swing without Counterweight
70.9in
Maximum Dig Height
305.7in
Maximum Blade Depth
16in
Maximum Reach - Ground Level
262.6in
Height - Boom Transport - No Tools
100.4in
Overall Shipping Length - without Counterweight
240.9in
Overall Shipping Length - with Counterweight
246.1in
Note (1)
Boom Height when stick is pinned in transport position with no attachments.
Height - Boom Working - With Tools
124in
Note (2)
Boom Height when stick is pinned in working position with attachments.

Blade

Height
17in
Width
90in

Sustainability

Recyclability
96%

Weight Increase from Minimum Configuration

Long Stick
181lb
Counterweight
552lb
Steel Tracks with Pads
628lb

Travel System

Maximum Traction Force - Low Speed
14035lb
Maximum Traction Force - High Speed
5856lb
Travel Speed - High
3.1mile/h
Ground Pressure - Maximum Weight
5.5psi
Travel Speed - Low
1.9mile/h
Gradeability - Maximum
30 degrees
Ground Pressure - Minimum Weight
5.1psi

Service Refill Capacities

Cooling System
2.6gal (US)
Hydraulic System
29gal (US)
Hydraulic Tank
14gal (US)
Fuel Tank
38gal (US)
Engine Oil
2.5gal (US)

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Swing
3626psi
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Pump Flow at 2,400 rpm
44gal/min
Digging Force - Stick - Standard
8504lb
Operating Pressure - Travel
4134psi
Operating Pressure - Equipment
4134psi
Digging Force - Stick - Long
7579lb
Digging Force - Bucket
12272lb
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134psi
Maximum Auxiliary Circuit - Primary - Flow at Pump
35gal/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134psi

Swing System

Machine Swing Speed
10r/min

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)
72dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
98dB(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
76in
Vertical Wall
141.6in
Tail Swing without Counterweight
70.9in
Stick Length
65.6in
Boom In Reach
66.2in
Track Belt/Shoe Width
17.7in
Ground Clearance
14.6in
O/A Track Width
86.6in
Maximum Reach - Ground Level
242.1in
O/A Undercarriage Length
108.7in
Width over Upper House
88.6in
Maximum Reach
247.9in
Swing Bearing - Height
29.7in
Maximum Blade Height
14.6in
Maximum Blade Depth
16in
Dig Depth
161.4in
Maximum Dump Clearance
208.6in
Cab Height
100in
Maximum Dig Height
289.3in
Height - Boom Working - With Tools
107.5in
Overall Shipping Length - with Counterweight
245.3in
Note (2)
Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Overall Shipping Length - without Counterweight
240.2in
Height - Boom Transport - No Tools
101.2in
Note (1)
Boom Height when stick is pinned in transport position with no attachments.

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

861 mm (34 in) Ripper

Shank Length
33.9 in
Weight
235.9 lb
Overall Length
42 in

HM210 Mulcher

Overall Width
48.3 in
Working Width
39.8 in
Length
28.1 in

HM208 Mulcher

Overall Width
40.4 in
Working Width
32.2 in
Length
28.1 in

H95s Hydraulic Hammer

Operating Weight - With Tool
1382.3 lb
Energy Class
1500.2 ft·lbf
Machine Class
7-10 Ton Mini Excavators, 415-450 Backhoe Loaders (No Side Shift)

B8s Silenced Hydraulic Hammer

Operating Weight - With Tool
758.4 lb
Energy Class
848.2 ft·lbf
Machine Class
6-9 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders, 415-444 Backhoe Loaders

B8 Non-Silenced Hydraulic Hammer

Operating Weight - With Tool
771 lb
Energy Class
848.2 ft·lbf
Machine Class
6-9 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders, 415-444 Backhoe Loaders

G108 Stiff link Contractors’ Grapple

Machine Class
7-9 Ton Mini Excavators
Jaw Opening
69.5 in
Weight
815.7 lb

1312 mm (52 in) Pallet Fork Carriage

Height
21.7 in
Width
51.7 in
Weight
249.1 lb

HMF210 Flail Mower

Working Width
39.4 in
Required Hydraulics
Standard Flow
Overall Width
46.6 in

Tilting Dual Lock Pin Grabber Coupler For 8 Ton Mini Excavators

Weight
448.2 lb
Overall Width
14.6 in
Length
24.5 in

S-50 Pin Grabber S Type Coupler For 8 Ton Mini Excavators

Weight
196.9 lb
Lifting Hook Capacity
6613.9 lb
Width
13.5 in

S-50 Pin Grabber S Type Coupler With Secure Lock For 8 Ton Mini Excavators

Weight
196.9 lb
Lifting Hook Capacity
6613.9 lb
Width
13.5 in

S-45 Pin Grabber S Type Coupler For 7-9 Ton Mini Excavators

Weight
209.4 lb
Lifting Hook Capacity
6613.9 lb
Width
13.5 in

Manual Pin Lock Coupler For 8 Ton Mini Excavators

Weight
174.2 lb
Width
13.7 in
Length
26 in

Manual Dual Lock™ Pin Grabber Coupler For 8 Ton Mini Excavators

Weight
196.2 lb
Width
11.5 in
Length
23.3 in

Hydraulic Dual Lock™ Pin Grabber Coupler For 8 Ton Mini Excavators

Weight
211.6 lb
Width
14.6 in
Length
23.4 in

914 mm (36 in) 7-8 Ton Mini Excavator Pin On Compaction Wheel

Compaction Width
34.8 in
Number of Wheels
5
Machine Class
7-8 Ton Mini Excavators

610 mm (24 in) 7-8 Ton Mini Excavator Pin On Compaction Wheel

Compaction Width
21.9 in
Number of Wheels
3
Machine Class
7-8 Ton Mini Excavators

610 mm (24 in) 1 Ton Mini Excavator Pin Lock Compaction Wheel

Compaction Width
22 in
Number of Wheels
3
Machine Class
1 Ton Mini Excavators

457 mm (18 in) 7-8 Ton Mini Excavator Pin On Compaction Wheel

Compaction Width
17.7 in
Number of Wheels
3
Machine Class
7-8 Ton Mini Excavators

457 mm (18 in) 1 Ton Mini Excavator Pin Lock Compaction Wheel

Compaction Width
17.3 in
Number of Wheels
3
Machine Class
1 Ton Mini Excavators

305 mm (12 in) 7-8 Ton Mini Excavator Pin On Compaction Wheel

Compaction Width
12 in
Number of Wheels
2
Machine Class
7-8 Ton Mini Excavators

305 mm (12 in) 1 Ton Mini Excavator Pin Lock Compaction Wheel

Compaction Width
11.3 in
Number of Wheels
2
Machine Class
1 Ton Mini Excavators

PC45 Cold Planer

Working Width
17.7 in
Maximum Cutting Depth
5.9 in
Required Hydraulics
1st Auxiliary

PC35 Cold Planer

Working Width
13.8 in
Maximum Cutting Depth
4.7 in
Required Hydraulics
1st Auxiliary

1300 mm (51 in) Nordic Grading Bucket

Width
51.2 in
Capacity
14.1 ft³
Weight
637.1 lb

1300 mm (51 in) Nordic Grading Bucket

Width
51.2 in
Capacity
14.1 ft³
Weight
582 lb

1300 mm (51 in) Nordic Grading Bucket

Width
51.2 in
Capacity
14.1 ft³
Weight
595.2 lb

762 mm (30 in) Heavy Duty Rock Bucket

Width
30 in
Capacity
10.9 ft³
Weight
491.6 lb

610 mm (24 in) Heavy Duty Rock Bucket

Width
24 in
Capacity
8.1 ft³
Weight
427.7 lb

914 mm (36 in) Heavy Duty Bucket

Width
36 in
Capacity
13.7 ft³
Weight
507.1 lb

762 mm (30 in) Heavy Duty Bucket

Width
30 in
Capacity
10.9 ft³
Weight
456.4 lb

610 mm (24 in) Heavy Duty Bucket

Width
24 in
Capacity
8.1 ft³
Weight
392.4 lb

457 mm (18 in) Heavy Duty Bucket

Width
18 in
Capacity
5.3 ft³
Weight
332.9 lb

330 mm (13 in) Heavy Duty Bucket

Width
13 in
Capacity
3.5 ft³
Weight
299.8 lb

1500 mm (59 in) Grading Bucket

Width
59.1 in
Capacity
18.4 ft³
Weight
761.9 lb

1200 mm (47 in) Grading Bucket

Width
47.2 in
Capacity
14.5 ft³
Weight
615.3 lb

1524 mm (60 in) Ditch Cleaning Bucket

Width
60 in
Capacity
14.8 ft³
Weight
557.1 lb

1372 mm (54 in) Ditch Cleaning Bucket

Width
54 in
Capacity
13.2 ft³
Weight
517 lb

1219 mm (48 in) Ditch Cleaning Bucket

Width
48 in
Capacity
11.6 ft³
Weight
477.1 lb

914 mm (36 in) Pin Lock High Capacity Bucket

Width
36 in
Capacity
16.2 ft³
Weight
560 lb

762 mm (30 in) Pin Lock High Capacity Bucket

Width
30 in
Capacity
12.7 ft³
Weight
489.4 lb

610 mm (24 in) Pin Lock High Capacity Bucket

Width
24 in
Capacity
9.2 ft³
Weight
427.7 lb

406 mm (16 in) Pin Lock High Capacity Bucket

Width
16 in
Capacity
5.7 ft³
Weight
337.3 lb

457 mm (18 in) Pin Lock High Capacity Bucket

Width
18 in
Capacity
6.4 ft³
Weight
357.1 lb

914 mm (36 in) Pin Lock Heavy Duty Bucket

Width
36 in
Capacity
12 ft³
Weight
509.3 lb

762 mm (30 in) Pin Lock Heavy Duty Bucket

Width
30 in
Capacity
9.9 ft³
Weight
443.1 lb

610 mm (24 in) Pin Lock Heavy Duty Bucket

Width
24 in
Capacity
7.3 ft³
Weight
370.4 lb

406 mm (16 in) Pin Lock Heavy Duty Bucket

Width
16 in
Capacity
4.2 ft³
Weight
297.6 lb

457 mm (18 in) Pin Lock Heavy Duty Bucket

Width
18 in
Capacity
4.9 ft³
Weight
304.2 lb

300 mm (12 in) Pin Lock Heavy Duty Bucket

Width
11.8 in
Capacity
3.4 ft³
Weight
249.1 lb

A68 Auger

Drive Shaft Torque at Maximum Pressure
5034.6 lb/ft
Drive Method
Gerotor Motor - Double Planetary Reduction
Mounting Bracket Design
8 Ton Mini Excavator Pin On

7 – 9 Ton Excavator Class Skid Steer Coupler Adapter

Weight
310.9 lb
Width
44.3 in
Overall Length
19.9 in

671 mm (26 in) 4 Teeth/2 Tine Progressive Link Thumb for 8 Ton Mini Excavators

Number of Teeth/Tines
4/2
Stored Height
26.4 in
Overall Width
17.7 in

858 mm (34 in) 6 Teeth/2 Tine Progressive Link Thumb for 8 Ton Mini Excavators

Number of Teeth/Tines
6/2
Stored Height
33.8 in
Overall Width
17.7 in

S308 Mobile Scrap & Demolition Shear

Tip Force
43.3 Sh Ton
Rotation
360 Degrees
Jaw Opening
9.4 in

Specifications

Standard/Optional Features

Attachments