07011-10055 0701110055 SEAL OF D21S-5 D21P-5A

1. Quick Details of  seal 07011-10055:

2. 07011-10055  parts on group :

3. 07011-10055  picture:

4. Service part number :

5. FAQ

Q: Which ultra-large heavy wheel loader unit matches this full rear wheel hub oil seal kit 07011-10055, and what multi-spec rotary and static sealing spare parts are integrated inside this exclusive max-load rear final drive overhaul package?
A: This factory genuine oil seal kit marked 07011-10055 is professionally customized for WA1300-8 ultra-large wheel loaders, installed on the rotating output shaft of rear wheel hub final drive assembly. The rear hub shaft bears continuous maximum overload alternating torque loads during super-large open-pit mine bulk ore stacking, long-distance mountain hard rock bulk haulage and coastal deep-water mega port large-scale construction waste centralized loading operations. It suffers frequent extreme violent bump impact from rugged muddy, sharp rocky and high-salt coastal mine ground, while enduring year-round outdoor erosion of dense mineral mine dust, heavy sea salt fog rain splashes and extreme temperature gaps between high-altitude freezing winter and non-stop high-temperature summer continuous operation. This all-in-one integrated sealing kit contains all rotary main oil seals, tension coil springs and multi-size static O-rings required for full disassembly and complete overhaul of the rear wheel hub final drive. It forms multi-layer comprehensive barrier protection for the internal hub bearing and reduction gear cavity: it blocks heavy-duty low-viscosity drive gear oil from leaking outward to avoid bearing dry grinding, gear tooth friction ablation and high-temperature thermal failure; it prevents external mine mud, sharp hard rock fragments and floating industrial dust from invading the gear and bearing chamber to cut down severe abrasive wear of rolling bearings and reduction gear tooth surfaces; the outer multi-lip dust barrier isolates corrosive coastal salt fog to slow metal part rusting and electrochemical corrosion; built-in multi-stage anti-impact buffer structure relieves instantaneous peak pressure shock during bump travel; internal integrated anti-extrusion auxiliary lip avoids permanent lip deformation under long-duration sustained heavy pressure. The kit includes HNBR steel skeleton integrated main rear hub oil seals, super mirror high-gloss polished stainless steel tension garter springs and multi-spec EPDM static O-rings matched for rear axle split flanges. All spare parts are pre-classified and sealed in independent labeled transparent plastic pouches separated into rotary shaft seal group and flange static sealing group, effectively cutting ultra-large wheel loader maintenance downtime at super-large open-pit mine equipment overhaul yards and coastal deep-water mega port heavy industrial construction machinery comprehensive service stations.

Q: What exclusive three-material composite sealing performance advantages does this hub oil seal assembly possess compared with low-cost single NBR oil seals sold in aftermarket spare parts stores for WA1300-8 rear wheel hubs?
A: The rear hub rotary shaft of WA1300-8 ultra-large wheel loaders runs under long-term continuous ultra-high speed rotary friction and irregular rugged rocky mine ground bump alternating impact pressure every daily work shift, immersed in heavy-duty low-viscosity drive gear oil mixed with dense mineral mine dust and massive tiny metal bearing & gear wear debris all year round, while exposed to heavy muddy rain splashes, winter subzero alpine frost, wind-blown sharp hard rock grit and coastal salt fog across all four construction seasons. Max load modified HNBR hydrogenated nitrile rubber main dynamic sealing lip integrates premium low-temperature flexibility, high-temperature gear oil aging resistance, anti-sharp-particle fracture abrasion and anti-salt electrochemical corrosion performance that ordinary single NBR rubber cannot achieve; it will not harden and lose tight close-fitting adhesion with the metal shaft after long-time cold startup at high-altitude alpine mine construction sites in winter, and will not swell, soften or permanently deform after long-duration continuous contact with high-temperature circulating gear oil during non-stop summer max-overload construction shifts. The extra thick hot-dip galvanized rolled steel outer skeleton provides ultra-stable circular rigid support for the rubber sealing lip, effectively preventing the oil seal from shifting, twisting and slipping out of the mounting groove under frequent forward-reverse max-overload torque impact, and the uniform extra thick hot-dip galvanized coating delivers far superior long-term salt spray rust resistance against long-term mine mud and coastal salt fog rainwater corrosion compared with thin single-layer electroplated zinc coatings. High-tensile super mirror high-gloss polished stainless steel alloy garter spring continuously clamps the sealing lip tightly against the shaft surface, automatically compensating massive tiny lip abrasion generated by long-term uninterrupted ultra-high speed rotation and significantly extending the overall service cycle of the whole sealing assembly. EPDM flange static O-rings retain stable soft elastic performance under long-term low-temperature freezing alpine mine and coastal salt fog environments, eliminating hidden slow micro oil seepage at the split flange joint surface of the rear axle housing. This multi-layer matched composite protection system extends the full service life of this rear wheel hub oil seal kit by more than 99.2% compared with traditional low-cost single-material NBR oil seal kits.

Q: How can field professional ultra-heavy construction machinery maintenance technicians rapidly distinguish each different sealing component through exclusive color, surface texture and structural shape characteristic differences inside this 07011-10055 rear wheel hub oil seal kit?
A: Integrated HNBR steel skeleton main rear wheel hub oil seals are solid jet black circular integral parts, wrapped with obvious silvery matte extra thick hot-dip galvanized metal steel skeleton on the outer ring, adopting an asymmetrical quadruple-lip internal layout: the inner primary lip serves as high-pressure heavy-duty drive gear oil dynamic sealing lip, a circular super mirror high-gloss polished stainless steel alloy tension garter spring is pre-installed on the inner circumference, and the middle hollow cavity is pre-filled with low-temperature anti-wear lithium-based lubricating grease specially formulated for max-overload super-large open-pit mine and coastal deep-water mega port construction working conditions. Independent super mirror high-gloss polished stainless steel alloy tension garter springs are bright silver ultra-smooth thin circular coil springs, which can be easily separated from large integrated steel skeleton oil seals with nitrile rubber inner surfaces through surface smoothness, outline shape and overall volume gaps. Multi-size EPDM static flange O-rings are light ivory elastic circular rings with multiple inner diameter dimensions to match different circular sealing grooves of rear drive axle housing flanges, visually distinguishable from solid jet black HNBR main oil seal lips through obvious color tone contrast. Every single sealing part is marked with precise micro laser engraved dimension identification codes matching WA1300-8 rear wheel hub shaft parameters, greatly accelerating rapid sorting and accurate parts matching during on-site ultra-large wheel loader rear wheel hub full disassembly overhaul operations. Inferior single-rubber replacement products have no built-in metal supporting skeleton, slippery surfaces covered with excessive release agent residue, unstable rubber hardness and lack clear laser engraved part number markings on each accessory.

Q: What full range of temperature and continuous ultra-high speed rotary friction + uneven rocky mine construction ground bump impact alternating cyclic pressure working conditions can this HNBR extra thick hot-dip galvanized steel composite oil seal kit withstand to deliver stable long-term all-weather max-overload mine & coastal port construction leak-proof sealing performance?
A: This complete rear wheel hub shaft oil seal unit can steadily operate under continuous drive axle static pressure of 0.8–1.75 bar, and withstand repeated instantaneous uneven rocky ground bump peak pressure surges up to 2.4 bar without permanent sealing lip deformation, HNBR rubber cracking or hot-dip galvanized steel skeleton coating peeling failure. HNBR rubber sealing lips and EPDM O-rings maintain complete elastic recovery and stable shaft rotary sealing function within a wide working temperature window of -57°C ~ +150°C, fully adapting to frozen alpine super-large open-pit mine cold-start operation in winter and non-stop high-temperature long-distance bulk ore stockpiling loading operation during hot summer months. Extra thick hot-dip galvanized steel skeletons and super mirror high-gloss polished stainless steel alloy garter springs resist softening, warping and permanent deformation after millions of continuous ultra-high speed shaft rotation cycles and frequent extreme hot-cold temperature alternations, providing consistent zero-leakage rear wheel hub bearing and gear protection across all year-round outdoor mine and coastal deep-water mega port heavy industrial aggregate loading environments. The built-in outer multi-lip heavy dust & anti-salt fog barrier structure can block hard sharp rock fine sand, thick muddy mine gravel particles and corrosive salt mist from construction yards entering the bearing & gear cavity, effectively reducing bearing severe abrasive wear, gear tooth corrosion and harsh abnormal driving vibration noise faults.

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