New CAT Equipment

310 Mini Hydraulic Excavator

The Cat® 310 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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    Learn more about the 310 Mini Hydraulic Excavator


    Product Specs


    Net Power 69.5 HP
    Stroke 4.7 in
    Note Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
    Bore 3.7 in
    Displacement 203 in³
    Gross Power - SAE J1995:2014 74.3 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 69.5 HP
    Note 1 Advertised power is tested per the specified standard in effect at the time of manufacture.


    Operating Weight 22451 lb
    Minimum Operating Weight with Cab* 21170 lb
    Maximum Operating Weight with Cab** 22451 lb
    Note (2) **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
    Note (1) *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, long stick, blade and no bucket.

    Weight Increase from Minimum Configuration

    Counterweight 552 lb
    Steel Tracks with Pads 728 lb

    Travel System

    Maximum Traction Force - Low Speed 19064 lb
    Maximum Traction Force - High Speed 6497 lb
    Travel Speed - High 3.1 mile/h
    Travel Speed - Low 1.6 mile/h
    Ground Pressure - Maximum Weight 6.4 psi
    Ground Pressure - Minimum Weight 6 psi
    Gradeability - Maximum 30 degrees

    Service Refill Capacities

    Hydraulic Tank 14 gal (US)
    Cooling System 2.6 gal (US)
    Engine Oil 3 gal (US)
    Fuel Tank 38 gal (US)
    Hydraulic System 37 gal (US)

    Hydraulic System

    Operating Pressure - Swing 3336 psi
    Digging Force - Bucket 17459 lb
    Operating Pressure - Travel 4134 psi
    Operating Pressure - Equipment 4134 psi
    Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
    Digging Force - Stick 11060 lb
    Type Load Sensing Hydraulics with Variable Displacement Piston Pump
    Pump Flow at 2,400 rpm 62 gal/min
    Maximum Auxiliary Circuit - Secondary - Flow at Pump 9 gal/min
    Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134 psi
    Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134 psi
    Maximum Auxiliary Circuit - Primary - Flow at Pump 35 gal/min

    Swing System

    Machine Swing Speed 10.6 r/min


    Height 17 in
    Width - Standard 97.2 in
    Width - Wide 103.9 in

    Certification - Cab

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


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


    Dig Depth 205.2 in

    Dimensions - Standard Stick

    Tail Swing without Counterweight 70.9 in
    Stick Length 98.4 in
    Boom In Reach 83.3 in
    Maximum Reach 303 in
    Dig Depth 205.2 in
    Ground Clearance - Frame 14 in
    O/A Track Width 97.2 in
    Cab Height 100 in
    Track Belt/Shoe Width 17.7 in
    Maximum Blade Depth 18.8 in
    Maximum Dump Clearance 229.5 in
    Maximum Dig Height 313.8 in
    Maximum Blade Height 16.6 in
    Tail Swing - Standard Counterweight 76.1 in
    O/A Undercarriage Length 126 in
    Vertical Wall 172.6 in
    Swing Bearing - Height 28.9 in
    Maximum Reach - Ground Level 298 in
    Overall Shipping Length - with Counterweight 274.9 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 269.7 in
    Height - Boom Transport - No Tools* 100.4 in
    Height - Boom Working - With Tools** 106.3 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.


    Recyclability 96%