335 Hydraulic Excavator

Net Power - ISO 9249
273 HP
Engine Model
Engine Power - ISO 14396
275 HP
  • Exterior View
  • Interior View


Net Power - ISO 9249
273 HP
Engine Model
Engine Power - ISO 14396
275 HP
4 in
5 in
428 in³

Hydraulic System

Main System - Maximum Flow
560 l/min (148 gal/min)
Maximum Pressure - Equipment
5,075 psi
Maximum Pressure - Travel
5,075 psi
Maximum Pressure - Swing
4,181 psi

Swing Mechanism

Swing Speed
11 r/min
Maximum Swing Torque
79,455 ft·lbf


Operating Weight
77,000 lb

Service Refill Capacities

Fuel Tank Capacity
97 gal (US)
Cooling System
3 gal (US)
Engine Oil
7 gal (US)
Swing Drive - Each
3 gal (US)
Final Drive - Each
2 gal (US)
Hydraulic System - Including Tank
93 gal (US)
Hydraulic Tank
41 gal (US)
DEF Tank
7 gal (US)


Reach 6.15 m (20'2")
R3.2CB2 (10'6")
GD 1.54 m³ (2.01 yd³)
Shipping Height - Top of Cab
11 ft
Handrail Height
11 ft
Shipping Length
32 ft
Tail Swing Radius
6 ft
Counterweight Clearance
3 ft
Ground Clearance
2 ft
Track Length
18 ft
Length to Center of Rollers
13 ft
Track Gauge
9 ft
Transport Width
10 ft

Working Ranges & Forces

Maximum Digging Depth
22 ft
Reach 6.15 m (20'2")
R3.2CB2 (10'6")
GD 1.54 m³ (2.01 yd³)
Maximum Reach at Ground Level
34 ft
Maximum Cutting Height
37 ft
Maximum Loading Height
26 ft
Minimum Loading Height
10 ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
23 ft
Maximum Vertical Wall Digging Depth
19 ft
Bucket Digging Force - ISO
46,482 lbf
Stick Digging Force - ISO
32,319 lbf

Performance And Productivity

  • Larger stick and bucket cylinders and higher hydraulic power can help to increase productivity up to 20%. This is about 20% increased fuel efficiency versus the 335F.
  • 20% increased hydraulic power for greater production.
  • 15% increase in bucket and stick force thanks to larger diameter cylinders.
  • Compact radius helps you work in tight spaces.
  • 5% improved swing torque makes working on slopes easier.
  • Increase operating efficiency up to 45% with standard Cat technologies that lower operator fatigue and operating costs, including fuel consumption and daily maintenance.
  • The C7.1 engine meets the latest emission standards. Aftertreatment system requires no maintenance or downtime.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
  • Match the excavator to the job with power modes; let Smart mode automatically match engine and hydraulic power to digging conditions. Smart mode can save you an average of 10% in fuel consumption with no impact on productivity.
  • Advansys™ bucket tips increase penetration and improve cycle times. Tip changes can be done quickly with a simple lug wrench instead of a hammer or special tool, improving safety and uptime.
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Optional SmartBoom™ lets the boom freely travel up and down without using any pump flow so operators can focus on stick and bucket work, reducing operator stress and fuel consumption.
  • Two blade widths are now available: 3.6 m (11'8") wide to cover up to 850 mm (33") shoes or 3.45 m (11'3") wide to cover 600 mm (24") shoes.
  • Don’t let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 52°C (125.6°F) without de-rate and cold start capability of 18°C (0°F). An optional -32°C (-25°F) cold start package is available.

Technology That Gets Work Done

  • Improve productivity with standard ease-of-use features, including Cat GRADE with 2D, Cat Payload, and Cat 2D E-Fence.
  • Standard Grade Assist helps you stay on grade – simply and effortlessly – with single-lever digging.
  • Set your desired bucket angle and let Bucket Assist automatically maintain the angle in sloping, leveling, fine grading, and trenching applications.
  • Automatically stop excavator swing at operator-defined set points in truck loading and trenching applications with Swing Assist, which will help you use less effort and consume less fuel.
  • Standard Cat Payload on-board weighing system lets you achieve precise load targets and increase loading efficiency with on-the-go weighing and real-time estimates of your payload without swinging.
  • Combine Payload with VisionLink® and remotely manage your production targets.
  • Upgrade to optional Cat GRADE with Advanced 2D to create and edit grade designs with ease on a second high-resolution 254 mm (10 in.) touchscreen monitor.
  • Upgrade to optional Cat GRADE with 3D to use 3D designs and GNSS technology to assist the operator in reaching the desired grade faster and accurately. The optional GNSS antenna coming with the Cat GRADE with 3D option will be flush mounted on the counterweight, allowing for a more protected design while providing excellent visibility to the sky and satellites.
  • All Cat Grade systems are compatible with radios and base stations from Trimble, Topcon, and Leica. Already invested in a grade infrastructure? You can install grade systems from Trimble, Topcon, and Leica onto the machine.

Work In Comfort

  • Choose from Deluxe or Premium cabs – both with automatic climate control.
  • The Deluxe seat is heated and air adjustable. The Premium seat is heated and cooled and adjusts automatically.
  • Tip-up console on the Deluxe and Premium cab improves ingress/egress by approximately 45%.
  • Control the excavator comfortably with easy-to-reach controls all located in front of you.
  • Stow your gear with plenty of in-cab storage beneath and behind the seat and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.
  • Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

Simple To Operate

  • Start the engine with a push button using a Bluetooth key fob (optional),or the unique Operator ID function.
  • Program your power mode and joystick preferences using Operator ID; the excavator will remember what you set each time you go to work.
  • Navigate quickly on the standard high-resolution 203 mm (8 in.) touchscreen monitor, with the optional 254 mm (10 in.) touchscreen monitor, or with the aid of the jog dial control.
  • Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.
  • Find the tool you need – even if it’s hidden beneath overgrowth or debris. The excavator’s onboard Bluetooth reader can locate any work tool equipped with Cat asset tracking devices up to a range of 60 m (200 ft) (optional).
  • Make moving the excavator much easier with Cat Stick Steer. Simply push a button and use one hand to travel and turn instead of both hands or feet on levers or pedals.
  • Need more lift during your shift? Turn on Auto Heavy Lift and get 8% more power exactly when you need it for as long as you need it.

Lower Maintenance Costs

  • Expect up to 25% less maintenance costs than the 335F (savings calculated over 12,000 machine hours).
  • Check engine oil level quickly and safely with the new ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.
  • Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
  • No required maintenance on the Cat Clean Emissions Module.
  • Using Cat genuine oil and filters and doing your typical S∙O∙S monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
  • Expect the new air intake filter with precleaner to last up to 1,000 hours – a 100% increase over the previous filter.
  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval – 50% longer than previous filter designs.
  • High-efficiency cooling fans run only when needed; you can program intervals, so they automatically reverse to keep cores clean without interrupting your work.
  • S•O•S ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.

Built-In Safety Features

  • Lift Assist helps you avoid tipping. With visual and auditory alerts, you’ll know if your load is within the excavator’s safe working range limits.
  • Access all service points from ground level – no need for you to climb on top of the excavator.
  • The standard ROPS cab meets ISO 12117-2:2008 requirements.
  • Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab pillars, larger windows, and a flat engine hood design.
  • The standard hydraulic lockout lever isolates all hydraulic and travel functions in the lowered position.
  • Ground-level shut-off switch stops all fuel to the engine when activated and shuts down the machine.
  • A rearview camera and a right-side-view camera are standard. Upgrade to 360° visibility and you’ll easily visualize objects and personnel around the excavator in a single view.
  • New service platform design in the front of the machine provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.
  • Brightly colored seatbelts allow easy recognition of properly utilized safety restraints.
  • Optional boom and stick lowering check valves prevent reverse flow, keeping your front linkage securely in place should the hydraulic system unexpectedly lose power.
  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cat Technology
    • Cat Product Link
    • Cat Grade with 2D
    • Cast Assist Technology
    • Cat Payload
    • 2D E-Fence
    • Work tool recognition
    • Work tool tracking
    • Auto hammer stop
    • Remote Services Capability
  • Engine
    • Three selectable modes: Power, Smart, Eco
    • 4600 m (15,090 ft) altitude capability with engine power derate above 3000 m (9,840 ft)
    • 52°C (126° F) high-ambient cooling capacity with derate
    • -18°C (0° F) cold start capability
    • Sealed double element air filter with integrated precleaner
    • 1 x 145 Amp. dual alternator
    • Electric fuel priming pump
    • Hydraulic and reversible demand fan
    • Two-stage fuel filtration system with water separator and indicator
    • Biodiesel capable (up to B20)
  • Service And Maintenance
    • Sampling ports for Scheduled Oil Sampling (S.O.S)
    • Grouped location for engine oil and fuel filter
  • Safety And Security
    • Rear- and right-side-view cameras
    • ISO 2867 right-hand handrail and hand hold
    • Service platform with anti-skid plate and countersunk bolts
    • Hydraulic lockout lever neutralizes all controls
    • Hydraulic lockout lever neutralizes all controls
    • Signaling/warning horn
  • Hydraulic System
    • SmartBoom (available in Europe only)
    • Electric main control valve
    • Boom and stick regeneration circuits
    • Auto hydraulic oil warm up
    • Auto two-speed travel
    • Boom and stick drift reduction valve
    • High flow 2-way tool control
    • Element type main hydraulic filter
  • Undercarriage And Structures
    • Base frame with standard track rollers and HD carrier rollers
    • Grease lubricated track
    • ISO 15818 tie down points on base frame
    • Track guiding guard, segmented two pieces
    • HD travel motor guards
    • Swivel guard
  • Booms, Sticks And Linkages
    • Boom cylinders
    • 6.15 m (20'2") reach boom
    • Bucket linkage, CB2 family with lifting eye
  • Electrical System
    • Maintenance-free batteries
    • LED chassis light, left-hand/right-hand boom lights, cab lights -1800 lumens
    • Centralized electrical disconnect switch
    • Programmable time delay working lights after engine shutdown
  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cat Technology
    • Cat Grade with Advanced 2D
    • Cat Grade with 3D
  • Engine
    • -32° C (-25° F) cold start capability
  • Electrical System
    • Premium surround lighting package
  • Safety And Security
    • 360° visibility
  • Hydraulic System
    • Medium pressure pump and lines
    • High pressure tool control lines
    • Auto Heavy Lift
  • Undercarriage And Structures
    • Track guiding guard, full length
    • 5.0 mt (11,020 lb) counterweight (for use with blade only)
    • 7.7 mt (16,980 lb) counterweight (for use without blade only)
    • 600 mm (24") triple grouser track shoes
    • 850 mm (33") triple grouser track shoes
    • 3440 mm (11'3") blade
    • 3600 mm (11'10") blade
  • Booms, Sticks And Linkages
    • 3.2 m (10'6" in) Reach stick
    • 3.75 m (12'4" in) Reach stick
  • Operator Environment
    • Roll down sun screen
    • Control pattern changer
    • Cat Stick Steer

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