Case WX155E SR Wheeled Excavator: E-Series 15.5-Ton Short-Radius Wheeled Excavator
The Case WX155E SR is a 15.5-ton E-Series short-radius wheeled excavator built for road-mobile utility, municipal, and infrastructure work. Short tail-swing geometry keeps the counterweight inside the wheelbase for curbside duty, while the wheeled chassis lets the machine drive between job sites under its own power without dedicated transport.
Where the WX155E SR fits in the Case excavator line
The WX155E SR sits in Case’s WX wheeled excavator range — wheeled-chassis excavators built for road-mobile utility work, municipal applications, and any operation that needs excavator capability without dedicated transport. It slots between the WX145 and the WX160E, with short-radius tail-swing geometry for urban and curbside work.
Case WX155E SR Wheeled Excavator - Quick Specs
- Class
- 15.5-Ton Short-Radius Wheeled Excavator
- Generation
- E-Series
- Engine
- Tier 4 Final Diesel
- Drivetrain
- Wheeled Chassis, Hydrostatic Drive
- Tail Swing
- Short Radius
- Serial Plate
- Right side of cab below windshield
- Smaller Sibling
- Case WX145
- Larger Sibling
- Case WX160E
Engine, hydraulics, and drivetrain
The WX155E SR runs a Tier 4 Final diesel through a hydrostatic drivetrain to a wheeled chassis — tires, axles, and final drives in place of a tracked undercarriage. Short-radius tail-swing geometry keeps the counterweight inside the wheelbase for curbside utility work. Stabilizer outriggers and/or a dozer-blade stabilizer keep the chassis planted during digging cycles. Boom, dipper, bucket, and swing functions match a comparable-class tracked CX excavator.
Tier 4 Final aftertreatment on the E-Series adds a diesel particulate filter (DPF), selective catalytic reduction (SCR) with DEF dosing, and a cooled EGR circuit. These systems are reliable when fed clean fuel and quality DEF, but they add service items not present on earlier Tier 3 wheeled excavators.
Common service items on the WX155E SR
- Engine internals: Tier 4 Final diesel pistons, rings, sleeves, head gaskets. Common-rail injection.
- Tier 4 Final aftertreatment: DPF service intervals and regeneration; DEF tank and dosing module; SCR catalyst; EGR cooler service.
- Fuel system: Common-rail injectors, lift pump, primary and secondary filters with tight water-separator standards.
- Cooling system: Radiator, water pump, thermostat, fan, charge-air cooler, hoses, belts.
- Hydraulic system: Boom, dipper, bucket, and swing cylinder seal kits; main pump rebuild; electrohydraulic control valves; hoses.
- Boom and dipper: Pin and bushing service at every joint, bucket pins, thumb attachment hardware, quick-coupler service.
- Wheeled chassis: Tires, wheel bearings, axle and final drive service, suspension if equipped.
- Swing system: Swing motor and reduction gear service, swing bearing inspection, swing brake.
- Electrical / ECU: Engine ECU, instrument cluster, sensors, harness, telematics module on equipped units.
- Cab glass + wiper: 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 WX155E SR
| Category | Common Parts | Browse |
|---|---|---|
| Engine | Tier 4 Final diesel internals, pistons, rings, sleeves, gaskets | Browse Engine |
| Aftertreatment | DPF, DEF dosing, SCR catalyst, EGR components | Browse Aftertreatment |
| 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 |
| Wheeled Chassis | Tires, wheel bearings, axles, final drives | Browse Chassis |
| Swing | Swing motor, reduction gear, swing bearing | Browse Swing |
| Cab Glass / Wiper | KHN16820 wiper, KHN3046 lower glass, KHN2632 upper glass | Browse Cab Glass |
| Electrical / ECU | ECU, sensors, harness | Browse Electrical |
| Operator Station | Seat, joysticks, pedal linkage, gauges | Browse Operator Station |
Need a part for your Case WX155E SR Wheeled Excavator?
Aftertreatment components, common-rail fuel system parts, and hydraulic pumps and cylinders are the highest-value items on a WX155E SR. Call our parts team with your serial number.
Request a PartWhat to verify before ordering
- Serial number. Confirm the serial on the WX155E SR before ordering year-specific parts.
- Engine serial. Engine internal parts must match the engine serial number.
- Hydraulic cylinder bore. Cylinder seal-kit fit depends on bore dimension — measure before ordering.
- Tier 4 emissions revision. DPF and DEF/SCR 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.
Why the WX155E SR still earns a paycheck
The Case WX155E SR is a wheeled excavator for road-mobile utility, municipal, and infrastructure work — it drives between job sites under its own power, eliminating the dedicated transport requirements that tracked excavators carry. The configuration is common in European municipal fleets and increasingly used in North American utility applications.
Maintenance priorities on a WX155E SR: clean fuel, hydraulic oil condition, tire pressure and wheel-bearing service, axle and final-drive lubrication, outrigger and blade-stabilizer cylinder service, swing-bearing lubrication, and pin and bushing service. Broken Tractor maintains parts coverage across the Case wheeled excavator family.
