Auto Spare Parts Rear Brake Disc(Rotor) for OE#34216864901

• Being a world leading professional brake parts manufacturer, Winhere produces more than 55 million units of brake discs and 10 million sets of brake pads annually for OEM and IAM. 

• 96%+ car parc coverage of brake discs and brake pads from A to Z for both passenger cars and commercial vehicles. 

• IATF16949, ISO14001, ISO45001, ECE R90, CNAS certificated. 

• National Green Manufacturer and China’s Champion Enterprise awarded by M.I.I.T. and C.F.I.E. 

• National Standard of “Brake Disc for Automobile” GB/T 34422-2017 is led by National Quality Supervision and Inspection Center for automobile parts, Winhere is the responsible drafting company for this national standard.

Core Product Features

1. Solid one‑piece casting structure for rear‑axle working characteristics

   Unlike ventilated front discs, rear brake disc adopts full solid monolithic cast‑iron construction. It matches rear‑wheel brake load distribution, as rear axle undertakes smaller proportion of braking force during deceleration. Compact thickness reserves installation space for the widely‑used drum‑in‑hat integrated parking brake structure on passenger cars and SUV rear axles.

2. Optimized wall‑thickness uniformity to reduce thermal stress concentration

   Friction surface features even wall‑thickness distribution. Local hot‑spots are less likely to form under frequent city braking cycles. It lowers hidden risks of surface crack initiation brought by uneven heating and cooling cycles.

3. Full dip‑spin anti‑rust coating on non‑friction zones

   Anti‑corrosion coating covers disc hat, bolt holes, outer rim and inner chamber. Rear disc inner cavities easily trap moisture during ocean transportation and daily operation. This treatment restrains concealed rear‑axle corrosion and maintains clean appearance after long‑term warehouse storage.

4. Controlled hardness range for rear‑axle wear matching

   Material hardness is calibrated for rear‑wheel working load. It achieves balanced wear rate when paired with rear brake pads. Avoid overly aggressive rotor abrasion or rapid disc thinning under daily stop‑and‑go traffic.

5. Strict OE‑equivalent dimensional & run‑out control

   Precision CNC turning and surface finishing. Hub bore, PCD, mounting face and total thickness follow original equipment specifications. Low lateral run‑out after direct bolt‑on installation, no on‑vehicle machining required.

6. 100‑percent dynamic balance inspection

   Every finished solid disc passes individual dynamic balance test. Residual unbalance is offset to suppress rear‑end vibration sources during high‑speed cruising.

Application Scenarios

1. Urban daily commuting

   Short trips and heavy‑traffic frequent braking. Solid rear discs cope with cyclic thermal load from city‑style driving, fit for family sedans and SUV daily commute.

2. Mixed highway & suburban driving

   Stable performance under high‑speed deceleration. Bear partial braking load together with front ventilated discs, maintain consistent rear‑axle braking feedback.

3. Humid coastal & rainy‑climate regions

   Rear disc inner cavities tend to hold water and mud. Comprehensive anti‑rust coating fights corrosion caused by high humidity and rain splash, suitable for coastal market.

4. Vehicles with integrated drum‑in‑hat parking brake

   Perfect match for rear‑axle drum‑in‑hat structure. Solid form preserves internal space for mechanical parking brake components, widely applied on modern passenger vehicles.

Buyer‑oriented Perspectives

After‑sales risk control

Targeted at aftermarket rear replacement demand. Solve typical rear‑disc complaints: concealed inner‑cavity rust, uneven wear, rear‑end vibration. Help distributors cut down claim volume on rear‑axle brake parts.

Supply‑chain & logistics

Compact solid‑disc weight compared with ventilated rotors. Helps optimise container loading capacity. Anti‑rust coating reduces extra anti‑rust packing cost for long ocean transit and long‑time stocking.

Market adaptability

Covers large volume of popular sedans, compact and mid‑size SUVs. Fits Europe, North America, Southeast Asia aftermarket, especially markets with high humidity and heavy urban traffic.

Process control

Complete production workflow: casting → stress‑relief annealing → CNC machining → anti‑rust coating → dynamic balance test → final inspection. Stress‑relief annealing removes internal casting stress to minimise post‑installation thermal deformation risk.

• 100% critical dimensions, runout and DTV inspection 

• Material physical and chemical inspection

• Test shear strength, compressibility, density, flatness and parallelism 

• Test performance and noise/NVH