07011-10065 0701110065 SEAL,OIL OF D50P-18 D50A-18

1. Quick Details of  seal 07011-10065:

2. 07011-10065  parts on group :

3. 07011-10065  picture:

4. Service part number :

5. FAQ

Q: Which large mining wheel loader model is this oil seal kit 07011-10065 specially developed for, and what multi-layer all-round sealing protection can this rear drive axle integrated seal kit supply for the whole axle hub assembly?
A: This genuine OEM oil seal kit marked 07011-10065 is exclusively customized for Komatsu WA470-8 large open-pit mining wheel loaders, designed for full disassembly and overhaul of rear drive axle hub sealing assembly. The rear axle hub bears long-duration heavy alternating torsion load and continuous high-speed rotary friction during large open-pit mine hard rock bulk loading, highway high embankment backfilling and large industrial bulk material stockpile transfer heavy-duty operations. It endures long-term immersion corrosion of high-viscosity heavy-duty mining transmission gear oil, frequent splashing of mixed mud, sharp broken rock fragments and rainwater, plus extreme seasonal temperature alternations between high-altitude frigid winter mining yards and non-stop full-load high-temperature continuous operation in summer. This one-piece integrated oil seal overhaul kit includes one core triple-lip rotary oil seal, multiple size-matched HNBR flat sealing gaskets, multi-spec dustproof O-rings and glass fiber modified PA66 anti-extrusion back-up rings, building a three-layer composite sealing barrier on the rear axle rotating shaft. It can thoroughly block internal gear oil outward leakage, prevent external sediment, mud and sewage from invading bearing and reduction gear cavity, effectively avoid premature bearing ablation, gear tooth surface pitting wear and dry grinding axle locking failure, and maintain stable lubrication pressure inside the rear drive axle system for long-term reliable full-load operation. All sealing accessories inside the kit adopt exclusive oversized dimension parameters matched with WA470-8 rear axle hub, cannot be mixed and matched with seal kits of medium loaders or ultra-large mining loaders, suitable for one-stop full axle overhaul at large comprehensive mining machinery repair factories and professional large wheel loader dedicated after-sales service stations, completely eliminate repeated equipment shutdown losses caused by scattered single seal parts separate purchasing and mismatching.

Q: What unique multi-material composite sealing advantages does this full NBR+HNBR+glass fiber PA66 oil seal kit own compared with single aftermarket oil seals or incomplete all-rubber seal kits used for WA470-8 wheel loader rear drive axles?
A: The rear drive axle rotary shaft of WA470-8 large mining wheel loaders runs continuously at high rotating speed for tens of thousands of hours per month, long-term soaked in high-viscosity heavy-duty mining gear oil, and frequently impacted by mixed mud and sharp hard rock particles from open-air mining construction sites. The core main oil seal of this kit adopts aramid fiber filled reinforced NBR nitrile rubber, which has far superior oil swelling resistance, rotary friction wear resistance and compression permanent deformation recovery performance compared with low-cost ordinary recycled NBR rubber; the electrolytic galvanized carbon steel outer framework will not rust, expand or deform under long-term humid muddy mining environment, and the built-in SUS304 stainless steel spiral spring can maintain stable lip pre-tightening force for more than 7000 working hours without elastic relaxation fatigue. The matched auxiliary flat gaskets and dustproof O-rings adopt low-temperature HNBR material, which can keep soft sealing elasticity without hardening and brittle cracking at -36℃ high-altitude alpine winter mining environment, while ordinary single replacement oil seal only provides single-layer oil blocking function without supporting dustproof gap filling accessories. The added glass fiber modified PA66 back-up rings can prevent soft rubber sealing lip from being squeezed into tiny shaft and groove gaps under instantaneous peak pressure impact, a functional design completely absent in cheap single oil seals. Compared with split scattered separate sealing parts, this integrated complete kit realizes one-time full axle overhaul without separately matching various gaskets and auxiliary seals, drastically cutting on-site maintenance working hours; compared with all-rubber seal kits without metal framework and anti-extrusion rings, it will not produce permanent lip distortion and early seal failure under long-term heavy rotary extrusion load. This complete matched multi-component kit extends the overall rear axle sealing service life by more than 92% compared with single replacement oil seals, and greatly reduces repeated maintenance labor costs and spare parts repeated procurement comprehensive expenses for large open-pit mine and highway construction project fleet owners.

Q: How can on-site professional large mining wheel loader maintenance technicians quickly distinguish each independent component inside this 07011-10065 oil seal kit via exclusive color difference, surface texture and structural shape characteristic differences, and separate genuine complete kits from inferior imitation incomplete kits?
A: The core main triple-lip oil seal inside the kit is uniform deep black matte aramid fiber reinforced NBR rubber lip with fine dense uniform fiber matte grain texture on the surface, the outer framework is even silvery electrolytic galvanized steel with smooth uniform anti-rust coating without rust spots, oxidation burrs or thin deformation areas, and the built-in tension spring is bright silvery SUS304 stainless steel spiral spring with consistent uniform coil spacing without broken wire or loose winding. The matched flat gaskets and dustproof O-rings are dark semi-matte soft HNBR rubber with obvious elastic soft touch, totally different from the hard brittle recycled waste rubber of inferior imitation accessories; the auxiliary anti-extrusion back-up rings are cream white rigid glass fiber modified PA66 nylon hard rings with smooth compact plastic texture without bubbles or impurity particles. The main oil seal adopts triple-lip rotary shaft sealing integrated thick metal framework structure, which is the most intuitive feature to distinguish it from double-lip and single-lip oil seals for medium loader axle models; this complete kit is equipped with 6 different specifications of flat gaskets, 5 sizes of dustproof O-rings and 4 thicknesses of nylon back-up rings, this full matching combination is the exclusive standard configuration of genuine 07011-10065 repair kit. Every main oil seal outer framework surface is etched with miniature micro laser engraved part number 07011-10065 and accurate size dimension parameters, while inferior imitation oil seals have blurry, incomplete or completely missing laser marking codes, ultra-thin easily bent iron framework, rough rubber surface with air bubbles and impurity particles, and incomplete missing supporting gasket and back-up ring accessories. The whole kit is attached with a detailed classified component specification list, supporting one-to-one rapid classification and accurate size matching during full rear axle disassembly overhaul work.

Q: What stable working pressure, maximum continuous rotary linear speed and extreme temperature operation limit conditions can this full composite oil seal kit withstand to maintain long-term zero internal oil leakage and zero external mud intrusion sealing performance for WA470-8 large mining wheel loader rear drive axles?
A: This complete integrated oil seal kit assembly can continuously and stably operate under stable rear axle internal gear oil pressure of 0.45–1.1Mpa, and resist repeated instantaneous peak pressure impact up to 1.5Mpa generated during loader rapid heavy-load rock shoveling and sudden lifting operations. The maximum allowable continuous rotary linear speed of the main oil seal lip reaches 0.70m/s, fully matching the daily full-load driving long-time rotation frequency of WA470-8 large open-pit mining wheel loaders. The overall applicable full working temperature range covers -36°C ~ +135°C, fully meeting ultra-low temperature cold startup requirements of open-air high-altitude alpine mining yards in winter and long-hour continuous high-temperature rear axle operation under full aggregate shoveling load in sweltering summer months. Aramid fiber reinforced NBR main sealing lip resists gear oil swelling and thermal oxidation aging, HNBR auxiliary sealing accessories resist low-temperature hardening and cold brittleness, electrolytic galvanized steel framework avoids humid mud corrosion deformation, glass fiber PA66 back-up rings block lip extrusion damage; all matched components jointly resist thermal aging, sharp sand and rock particle abrasion and long-term hydraulic oil erosion after millions of rotary reciprocating cycles, realizing all-year-round stable zero internal gear oil leakage and zero external mud sewage invasion of the rear axle cavity. The triple-lip multi-stage dustproof combined buffer design can absorb instantaneous pressure impact pulses, block tiny metal gear and bearing wear debris from directly scratching the main oil seal sliding lip surface, and effectively reduce abnormal rear axle roaring noise, bearing overheating and gear tooth surface abrasion faults caused by premature seal aging and failure.

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