OEM 860203348 The XCMG Brake Spring 860203348 is a genuine return spring that pulls the brake piston and discs back to the released position inside an XCMG excavator brake assembly.
Issued under the official part number 860203348, the spring gives technicians a correctly coiled part that fits the housing bore and spring seat without modification.
The spring is coiled from spring steel wire, then stress relieved and tempered, so it holds its rate through repeated compression cycles.
Free length, coil diameter, wire diameter and end form follow the XCMG drawing, so the spring seats squarely in its pocket.
A phosphate or zinc finish slows corrosion, which keeps the coils free and prevents the spring from seizing in the bore.
Every spring is checked for free length, rate, squareness and end grinding before the batch is packed for shipment.
Used in travel motor brakes, swing brakes and parking brake assemblies, this spring is a low-cost part that keeps the machine safely parked.
The 860203348 spring is coiled to the XCMG drawing, so free length, coil diameter and wire size match the brake housing.
Correct spring rate means the brake releases fully, so the discs do not drag and the travel motor does not overheat.
Ground square ends keep the spring upright in its pocket, so it compresses straight without bowing or rubbing the bore.
Stress relief and tempering give the wire memory, so the spring returns to free length after thousands of brake cycles.
A phosphate or zinc finish slows corrosion, so the coils stay free and the spring does not seize in the housing.
Because the part matches the OEM number, a technician fits it during a brake rebuild without cutting or reshaping coils.
Even coil spacing keeps the load balanced across the piston, so the brake plates separate evenly when pressure drops.
A sound return spring keeps the parking brake working, which is what stops the machine rolling on a slope.
Production starts with certified spring steel wire, checked for grade, diameter and surface freedom from cracks and laps.
Wire is coiled on CNC machines to the drawing pitch and diameter, then the ends are ground square to the axis.
Coils are stress relieved and tempered to the OEM hardness range, so the spring keeps rate without becoming brittle.
Inspectors measure free length, coil diameter, wire diameter and squareness against a gauge for this exact part number.
Batch records trace every 860203348 spring to its wire lot and heat treat run, so a quality question is settled quickly.
A hydraulic brake releases when oil pressure pushes the piston, and the spring returns the piston when pressure falls.
If the spring weakens or breaks, the brake can drag in travel or fail to apply, which causes heat, wear or a runaway risk.
The genuine 860203348 keeps the correct return force, so the brake applies fully when the machine is parked on a slope.
Correct rate and travel avoid both a dragging brake and a slow release, which are the two usual causes of brake heat.
A sound spring protects the discs, piston and housing, which keeps brake service intervals predictable and safe.
The 860203348 spring is fitted with a spring compressor and hand tools during a brake pack or motor rebuild.
Release system pressure, drain the housing and clean the work area so no dirt enters the brake assembly during the repair.
Inspect the piston, discs, seals and spring pocket for wear, and check that the pocket floor is flat and free of burrs.
Fit the new spring with the ground ends against the seat, and confirm it stands square in the pocket before assembly.
Compress the piston slowly so the spring stays centred, then fit the cover and tighten to the torque in the service data.
Refill with the specified oil, test the brake release and apply several times, and check that the machine holds on a slope.
At service intervals, look for drag, slow release, oil discolouration or a broken coil and renew the spring before failure.
Every 860203348 spring is produced in an ISO 9001 and ISO 14001 certified plant with traceability from wire to carton.
Incoming wire is checked for grade and diameter, and finished springs are gauged for length, diameter, rate and squareness.
Each batch is inspected for surface defects such as cracks, laps and tool marks, since these start fatigue failures.
Post-production checks include visual review, dimensional verification and a trial fit in the XCMG brake pocket fixture.
Sample springs from each lot undergo load and fatigue cycling to confirm they hold rate over the service life.
Cheap copies often skip proper tempering, so the wire softens and the brake starts to drag or fails to release.
A spring with the wrong rate can hold the brake partly applied, which overheats the discs and burns the oil.
The genuine 860203348 is coiled to the XCMG drawing, so length, diameter, wire size and rate match the original part.
Using genuine XCMG parts also preserves warranty coverage, protects resale value and keeps fit with OEM brake packs.
Backed by XCMG global quality standards and technical support, this spring performs reliably in harsh conditions.
Choosing the genuine 860203348 spring prevents a small brake fault from becoming a motor or final drive repair.
A dragging brake heats the oil and loads the engine, which wastes fuel and wears the whole brake pack.
A correctly rated spring gives clean release and full apply, so the discs wear evenly and the rebuild lasts longer.
Reliable brakes keep the machine productive and legal, which lowers the total cost of ownership across a fleet.
Service records from construction and mining fleets show genuine XCMG brake parts cut unplanned downtime.
XCMG builds the 860203348 spring with efficient coiling runs and tight wire control that keep production scrap low.
A long working life means fewer replacements, which lowers the wire and energy tied to each spring.
Stopping brake drag reduces oil heating and leakage, helping operators meet rules on sensitive sites.
The steel in this part complies with RoHS and REACH requirements for safe handling and responsible recycling.
The 860203348 spring is stocked in XCMG depots serving North America, Europe, Asia and Australia.
Each spring is bagged to protect the finish and shape, then boxed in a strong carton that guards against damp and distortion.
Fleet buyers can request volume pricing and combined freight, which simplifies planning and lowers landed cost.
Live stock data and responsive supply teams cover urgent requests fast, so machines return to work sooner.
Careful packing keeps springs straight and free of dents until fitting, avoiding the distortion seen in loose storage.
The XCMG Brake Spring 860203348 is a key safety part on XCMG excavators, returning the brake piston so the machine parks securely.
Its correct rate, square ends and protective finish deliver dependable brake release in hot, wet and dusty conditions.
By stopping drag and ensuring full apply, this spring cuts downtime, protects the brake pack and keeps operators safe.
Buy only genuine XCMG parts from authorised dealers to secure real quality, correct fitment and lasting performance.
Specify the 860203348 brake spring for dependable braking and confident, trouble-free servicing.
Work with XCMG, a trusted supplier of engine and hydraulic components for heavy equipment that delivers real value.
OEM 860203348 – XCMG Brake Spring – the definitive return spring for reliable brake release and safe parking on your excavator. Coiled to the drawing, tempered for spring memory, and backed by global quality standards. Trust the original to protect your investment and maximise uptime.
