310 Mini Hydraulic Excavator

Engine Model
Cat C3.3B
Net Power
70 HP
Operating Weight
22,451 lb
  • Exterior View
  • Interior View


Engine Model
Cat C3.3B
Net Power
70 HP
4 in
203 in³
Gross Power - ISO 14396
74 HP
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
72 HP
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70 HP
5 in
Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Gross Power - SAE J1995:2014
74 HP
Engine Model - U.S. EPA Tier 4 Final/EU Stage V
Cat® C3.3B
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC
70 HP


Operating Weight
22,451 lb
Maximum Operating Weight with Cab**
22,451 lb
Minimum Operating Weight with Cab*
21,170 lb
Note (1)
*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, long 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.


17 in
Width - Standard
97 in
Width - Wide
104 in

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)


Boom Swing Left
0 °
Boom Swing Right
0 °
Boom in Reach
90 in
Cab Height
103 in
Dig Depth
205 in
Ground Clearance
14 in
Maximum Blade Depth
26 in
Maximum Blade Height
14 in
Maximum Dig Height
314 in
Maximum Dump Clearance
230 in
Maximum Reach
301 in
Maximum Reach - Ground Level
296 in
Overall Shipping Length
259 in
Overall Track Width
97 in
Overall Undercarriage Length
126 in
Stick Length
98 in
Swing Bearing Height
32 in
Tail Swing with Counterweight
79 in
Tail Swing without Counterweight
71 in
Track Belt/Shoe Width
18 in
Transport Height
114 in
Vertical Wall
192 in

Hydraulic System

Auxiliary Circuit - Primary - Flow
35 gal/min
Auxiliary Circuit - Primary - Pressure
4,134 psi
Auxiliary Circuit - Secondary - Flow
9 gal/min
Auxiliary Circuit - Secondary - Pressure
4,134 psi
Digging Force - Bucket
17,459 lb
Digging Force - Stick
11,060 lb
Operating Pressure - Equipment
4,134 psi
Operating Pressure - Swing
3,336 psi
Operating Pressure - Travel
4,134 psi
Pump Flow at 2,400 rpm
62 gal/min
Load Sensing Hydraulics with Variable Displacement Piston Pump
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4,134 psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4,134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min

Service Refill Capacities

Cooling System
3 gal (US)
Engine Oil
3 gal (US)
Fuel Tank
38 gal (US)
Hydraulic System
37 gal (US)
Hydraulic Tank
14 gal (US)


Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
European Union Directive "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)

Swing System

Machine Swing Speed
11 r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6 psi
Ground Pressure - Minimum Weight
6 psi
Maximum Traction Force - High Speed
6,497 lb
Maximum Traction Force - Low Speed
19,064 lb
Travel Speed - High
3 mile/h
Travel Speed - Low
2 mile/h

Weight Increase from Minimum Configuration

552 lb
Steel Tracks with Pads
728 lb

Dimensions - Standard Stick

Tail Swing without Counterweight
71 in
Stick Length
98 in
Boom In Reach
83 in
Maximum Reach
303 in
Dig Depth
205 in
Ground Clearance - Frame
14 in
O/A Track Width
97 in
Cab Height
100 in
Track Belt/Shoe Width
18 in
Maximum Blade Depth
19 in
Maximum Dump Clearance
230 in
Maximum Dig Height
314 in
Maximum Blade Height
17 in
Tail Swing - Standard Counterweight
76 in
O/A Undercarriage Length
126 in
Vertical Wall
173 in
Swing Bearing - Height
29 in
Maximum Reach - Ground Level
298 in
Overall Shipping Length - with Counterweight
275 in
Note (2)
**Boom Height when stick is pinned in working position with attachments.
Note (1)
*Boom Height when stick is pinned in transport position (if available) with no attachments.
Overall Shipping Length - without Counterweight
270 in
Height - Boom Transport - No Tools*
100 in
Height - Boom Working - With Tools**
106 in

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 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.


  • 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 blade float 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.
  • Engine
    • Cat C3.3B 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
    • Electronic 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
    • TOPS – ISO 12117:1997
    • 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
      – 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 (4300 mm/169.3 in)
    • Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools (not available in all regions)
    • Thumb Ready (not available in all regions)
  • Electrical
    • 12 Volt Electrical System
    • 90 Ampere Alternator
    • 900 CCA Maintenance Free Battery
    • Battery Disconnect
    • Ignition Key Stop Switch
    • Travel Alarm
  • Other
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors
  • Operator Environment
    • Push to Start with Bluetooth® Key
    • Air Suspension Heated Seat
    • Rain Visor
    • Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 & IP69K)
      – Numeric Security Code
  • Undercarriage
    • Wide Dozer Blade
    • 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
    • Certified Lifting Eye
  • Electrical
    • Product Link Elite (regulations apply)
    • Rearview Camera
    • Rotating Beacon
  • Guarding
    • Mesh Front Guard ISO 10262 1998 Level I
    • Heavy Duty Front Guard ISO 10262 1998 Level II
    • Top Cab Guard ISO 10262 1998 Level II
    • Polycarbonate Front Window EN356 P5A (Cab Only)
  • Other
    • Water Jacket Heater
    • Refueling Pump

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