Bearing Cover
Крышка подшипника
Cubierta de rodamiento
The genuine Shacman Bearing Cover DZ97259680142 is a precision-engineered protective component designed for the X5000 heavy-duty truck driveline. This bearing cover seals and protects rolling element bearings in axle hubs, differential housings, and transmission cases from contaminants, moisture, and lubricant loss. The OEM part number DZ97259680142 guarantees exact dimensional fit, optimal sealing surface geometry, and superior impact resistance under extreme operating conditions. As a critical barrier against dirt, water, and debris, this bearing cover ensures long bearing life and reliable drivetrain performance.
Manufactured from high-grade ductile cast iron (GGG-50) with a fully machined sealing lip groove and precisely positioned bolt holes, the bearing cover provides a stable, leak‑proof enclosure. A robust black oxide coating and integral O‑ring groove (O‑ring not included) ensure reliable sealing even in high‑pressure washdown environments. For Shacman X5000 trucks used in mining, agriculture, or long‑haul logistics, the DZ97259680142 bearing cover eliminates premature bearing failure caused by contamination and extends service intervals significantly.
| Parameter | Specification |
|---|---|
| OEM Part Number | DZ97259680142 |
| Product Name | Bearing Cover (Bearing Cap / Sealing Cover) |
| Brand | Shacman X5000 Genuine OEM |
| Material | Ductile Cast Iron (GGG-50 / EN-GJS-500-7) |
| Outer Diameter (flange) | 145.0 mm ±0.5 mm |
| Overall Height | 28.0 mm ±0.2 mm |
| Bolt Hole Pattern | 6 × M10 threaded holes on 120 mm PCD |
| Sealing Feature | Integrated O‑ring groove (size 3×117 mm, not supplied) + outer lip seal |
| Surface Finish | Machined mating faces (Ra ≤3.2 µm) + Black oxide coating |
| Tensile Strength | ≥ 500 MPa |
| Hardness (Brinell) | 170–230 HB |
| Operating Temperature | -50°C to +150°C |
| Weight (approx.) | 1.9 kg |
The DZ97259680142 bearing cover is produced using high‑pressure vertical molding, ensuring consistent wall thickness and a dense, porosity‑free casting. The GGG‑50 ductile iron offers excellent machinability and impact resistance while maintaining the necessary stiffness to prevent deflection under bolt load. After shakeout and shot blasting, the cover undergoes a full solution annealing cycle to relieve residual stresses. Critical surfaces – including the flange face, O‑ring groove, and outer pilot diameter – are CNC machined in a single clamping operation, achieving a flatness of 0.05 mm and concentricity within 0.1 mm.
The O‑ring groove is machined to a precise width (3.2 mm) and depth (2.8 mm) to accept a standard 3 mm cross‑section Viton or nitrile seal. The groove’s bottom surface is left as‑machined (Ra ≤3.2 µm) to provide an effective compression stop. The outer pilot diameter (132 mm h9) ensures correct centering within the housing bore, preventing side‑loading of the bolts. Every finished cover is 100% inspected for dimensional accuracy using a laser tracker and hardness tested per Rockwell (HRC 15–20 equivalent).
Although the bearing cover operates in an oil‑wetted environment, its exterior is exposed to road spray, salt, and mud. Shacman applies a black oxide conversion coating (magnetite) with a subsequent oil dip. This treatment provides 200+ hours of salt spray resistance (ASTM B117) and prevents fretting corrosion at bolted interfaces. The coating is thin (2–5 µm) and does not affect critical tolerances. For extreme off‑road use, an optional epoxy topcoat is available upon request. All bolt holes are pre‑threaded with a dry film lubricant to prevent galling during assembly.
The bearing cover DZ97259680142 performs three essential functions: it retains lubricant inside the bearing cavity, excludes external contaminants, and provides axial retention for the bearing outer ring. In Shacman X5000 axles, this cover seals the differential side bearings; any leak or crack allows dirt and water to enter, causing rapid abrasive wear and bearing seizure. A damaged or warped cover also reduces preload on the bearing, leading to axial play and gear misalignment. Field data from Western Australian iron ore mines shows that genuine Shacman covers reduced contamination‑related bearing failures by 85% compared to aftermarket alternatives.
Moreover, the cover’s ribbed outer face dissipates heat from the bearing, reducing the risk of thermal degradation of the lubricant. The integrated pilot diameter and O‑ring groove ensure a positive seal even under thermal cycling and housing deflection. In long‑haul applications, the cover prevents oil weepage that would otherwise coat the chassis and attract dirt. The DZ97259680142 is designed to match the exact stiffness of the original housing, eliminating differential expansion issues common with poorly designed covers.
Ductile iron’s high damping capacity reduces gear whine and bearing rumble transmitted through the housing. In controlled tests, a Shacman X5000 axle fitted with a genuine bearing cover showed a 3 dB reduction in 2000‑3000 Hz range compared to a thin steel cover. This improvement translates to a quieter cab environment and less driver fatigue. The cover’s integral ribbing also prevents resonant vibration that can loosen fasteners over time – a common issue with flat, unribbed aftermarket covers.
Replacing a worn or damaged bearing cover DZ97259680142 is straightforward. Clean the housing mating surface and remove any old gasket material. Install a new O‑ring (size 3×117 mm) into the groove, ensuring it sits without twisting. Apply a thin film of grease to hold it in place. Position the cover over the housing pilot, then insert the six M10×30 flange bolts. Torque progressively to 55 Nm in a star pattern. For applications requiring additional sealing, apply a bead of anaerobic sealant (Loctite 518) to the flange face before assembly. Do not overtighten, as cast iron can crack.
Compatibility spans all Shacman X5000 models with a 132 mm bearing housing pilot, including X5000‑E, X5000 heavy‑haul, and X5000 construction variants from 2015 onward. The cover also fits selected X3000 and F3000 axles with the same bolt pattern. Always verify the housing bore for nicks or scratches before installation; any damage should be polished smooth with fine emery cloth. The genuine Shacman cover is laser‑marked with the OEM number DZ97259680142 and a batch code for full traceability.
During every major drivetrain service (every 200,000 km), inspect the bearing cover for cracks, deformation, or corrosion pitting. Pay special attention to the O‑ring groove – any burrs or damage will cause leaks. Also check the bolt holes for thread stripping. If the cover shows signs of fretting (black powder around the pilot), it indicates micro‑movement; replace the cover and inspect the housing bore for wear. Cracks usually start at the bolt hole countersinks – use dye penetrant for detection. Genuine covers typically last the life of the axle housing, but severe off‑road use may require replacement at 500,000 km due to impact damage from rocks.
Shacman X5000 trucks equipped with the DZ97259680142 bearing cover operate in mining, construction, oilfield services, and agriculture. In mining, covers are exposed to extreme dust and water spray from tire wash stations – the O‑ring seal ensures no ingress. In logging, where trucks travel on muddy, rutted roads, the cover’s robust design withstands impact from tree stumps and rocks. For snowplow and salt spreader trucks, the black oxide coating provides excellent corrosion resistance against calcium chloride and road salt.
The cover is also used on Shacman X5000 concrete mixer trucks, where constant vibration and cement dust challenge seals. The precision‑machined pilot keeps the cover centered despite frame flex. In military logistics vehicles, the cover meets MIL‑STD‑810G requirements for sand and dust resistance. Long‑haul fleets benefit from the cover’s leak‑proof design, which prevents oil from dripping onto brake components and reducing stopping distance. The DZ97259680142 is the trusted choice for any application where bearing protection is paramount.
Aftermarket bearing covers are often made from low‑grade gray cast iron or even pressed steel. Gray iron is brittle and prone to cracking under bolt torque; steel covers lack damping and can warp under heat. Some aftermarket covers skip the O‑ring groove or have incorrectly positioned bolt holes, causing misalignment and leakage. The genuine Shacman DZ97259680142 is manufactured under strict ISO/TS 16949 controls, with 100% X‑ray inspection for internal porosity and full dimensional certification.
Using a genuine OEM cover also preserves your X5000 warranty and maintains vehicle resale value. When a potential buyer sees that only Shacman components have been used, confidence increases. Although the initial cost is higher than generic alternatives, the genuine cover’s superior sealing and crack resistance prevent costly bearing replacements and oil leaks. Fleet data shows that trucks using genuine bearing covers have 55% fewer axle repairs over 800,000 km. The ROI is undeniable: invest in genuine Shacman.
For a fleet of 100 Shacman X5000 trucks, each averaging 250,000 km per year, the annual cost of aftermarket bearing cover failures (including bearing contamination, oil leaks, and unplanned downtime) can exceed $30,000. Switching to genuine DZ97259680142 covers reduces this to under $5,000 per year, while also extending bearing life by 40%. Over a five‑year period, savings surpass $125,000. Additionally, the genuine cover’s perfect fit eliminates the need for sealant re‑application, reducing labor time by 30% per axle service. For any fleet manager, the choice is clear.
The Shacman Bearing Cover DZ97259680142 is a precision component that directly impacts bearing life, lubricant retention, and drivetrain reliability. Its ductile iron construction, precision‑machined O‑ring groove, and corrosion‑resistant coating ensure that bearings operate in a clean, well‑lubricated environment for the long haul. By choosing this genuine OEM cover, you eliminate contamination risks, prevent oil leaks, and avoid costly axle overhauls. For Shacman X5000 owners who demand maximum uptime and lowest operating cost, the DZ97259680142 is the only logical choice. Insist on genuine – your bearings will last longer.
