Case CX330 Excavator: 33-Ton Original CX-Series Production Excavator
The Case CX330 is a 33-ton-class Original CX-series excavator, positioned between the CX300E and CX350B in Case's full-size lineup. Built around a Tier 2 diesel, load-sensing hydraulics, and a steel-track undercarriage, it remains a workhorse on production earthmoving, utility, and quarry sites.
Where the CX330 fits in the Case excavator line
The CX330 is a 33-ton-class Original CX-series excavator, sitting between the CX300E and CX350B in Case's full-size excavator lineup. It is a conventional tail-swing machine built for general site work, utility installation, residential and commercial earthmoving, and lighter mining and quarry duty depending on bucket and stick configuration.
Case CX330 Excavator - Quick Specs
- Class
- 33-Ton Excavator
- Generation
- Original CX
- Engine
- Tier 2 Diesel
- Drivetrain
- Hydrostatic Dual-Path
- Undercarriage
- Steel Track
- Tail Swing
- Conventional
- Smaller Sibling
- CX300E
- Larger Sibling
- CX350B
Engine, hydraulics, and drivetrain
The CX330 runs a Tier 2 diesel through a hydrostatic dual-path drivetrain and a steel-track undercarriage. The main hydraulic system uses a load-sensing piston pump driving boom, dipper, bucket, swing, and propel circuits through electrohydraulic control valves. Steering and propel control come from independent track motors with planetary final drives.
The boom, dipper, and bucket cylinders are standard double-acting hydraulic cylinders with serviceable seal kits. Swing is driven by a swing motor through a swing reduction gear, riding on a single-row ball or roller swing bearing depending on configuration.
Common service items on the CX330
- Engine internals: Pistons, rings, sleeves, head gaskets, bearings for the Tier 2 diesel.
- Fuel system: Common-rail injectors, lift pump, primary and secondary fuel filters with tight water-separator standards.
- Cooling system: Radiator, water pump, thermostat, fan, charge-air cooler (turbo builds), hoses, belts.
- Hydraulic system: Boom, dipper, bucket, and swing cylinder seal kits; main pump rebuild components; electrohydraulic control valves; hoses.
- Boom and dipper: Pin and bushing service at every joint, bucket pins, thumb attachment hardware, quick coupler service.
- Undercarriage: Steel track chains and shoes, rollers, idlers, drive sprockets, recoil springs.
- Swing system: Swing motor, swing reduction gear, swing bearing, swing brake.
- Electrical / ECU: Engine ECU, instrument cluster, sensors, harness, telematics module on equipped units.
- Cab glass and wipers: KHN16820 24-inch wiper blade, KHN3046 front lower glass, and KHN2632 front upper glass cross-fit across Case and Link-Belt excavators.
- Operator station: Seat, joystick controls, pedal linkage, instrument panel, cab HVAC.
Parts we carry for the Case CX330
| Category | Common Parts | Browse |
|---|---|---|
| Engine | Pistons, rings, sleeves, head gaskets, bearings | Browse Engine |
| Fuel System | Common-rail injectors, lift pump, filters | Browse Fuel |
| Cooling | Radiator, water pump, charge-air cooler, hoses | Browse Cooling |
| Hydraulics | Main pump, swing motor, cylinders, seal kits, valves | Browse Hydraulics |
| Boom / Dipper | Pins, bushings, bucket and quick-coupler hardware | Browse Boom / Dipper |
| Undercarriage | Steel tracks, rollers, idlers, sprockets, recoil springs | Browse Undercarriage |
| Swing | Swing motor, reduction gear, swing bearing | Browse Swing |
| Cab Glass / Wiper | KHN16820 wiper, KHN3046 lower glass, KHN2632 upper glass (Case/Link-Belt cross-fit) | KHN16820 Wiper Blade |
| Electrical / ECU | ECU, sensors, harness | Browse Electrical |
| Operator Station | Seat, joysticks, pedal linkage, gauges | Browse Operator Station |
Need a part for your Case CX330 Excavator?
Hydraulic pumps, swing components, undercarriage, and common-rail fuel system parts are the highest-value items on a CX330. Call our parts team with your serial number.
Request a PartWhat to verify before ordering
- Machine serial number. Confirm the serial before ordering year-specific parts - the CX330 saw running changes through its production.
- Engine serial. Engine internal parts must match the engine serial, not just the machine serial.
- Hydraulic cylinder bore. Cylinder seal kit fit depends on bore dimension - measure before ordering.
- Emissions revision. Aftertreatment and fuel-system components saw revisions during production - confirm by serial.
- Engine ECU calibration. Common-rail injectors and ECU sensors are calibrated to specific build years.
- Bucket and quick coupler. Quick-coupler interface varies - confirm before ordering attachment-side hardware.
- Undercarriage configuration. Standard and long-track variants existed - verify shoe width and chain pitch.
Why the CX330 still earns a paycheck
The Case CX330 is a 33-ton-class production excavator that remains in active service across general site work, utility installation, residential and commercial earthmoving, and mining and quarry work. The combination of a proven Tier 2 diesel, load-sensing hydraulics, and a Case-pattern steel-track undercarriage gives it the durability profile owners and operators expect from a full-size CX machine.
Maintenance priorities on a CX330 are clean fuel with tight water separation for common-rail injection, hydraulic oil condition and filtration, swing-bearing lubrication, steel-track tension and undercarriage wear monitoring, and pin and bushing service on the boom and dipper. Broken Tractor maintains parts coverage across the Case CX excavator family.
