07011-10058 0701110058 SEAL,OIL (K1) OF D21AG-7 D21P-6A

1. Quick Details of  seal 07011-10058:

2. 07011-10058  parts on group :

3. 07011-10058  picture:

4. Service part number :

5. FAQ

Q: Which medium wheel loader model is this oil seal kit 07011-10058 exclusively designed for, and what full sealing maintenance functions can this complete axle hub oil seal kit provide for the front drive axle assembly?
A: This genuine OEM oil seal kit marked 07011-10058 is specially customized for Komatsu WA320-8 medium construction wheel loaders, used for full disassembly overhaul of the front drive axle hub sealing assembly. The front axle hub bears long-term alternating load and continuous rotating friction during urban aggregate stockpile shoveling, municipal road backfilling and small quarry material loading operations. It faces constant erosion of transmission gear oil, mud mixed gravel splashing, and frequent temperature swings between low-temperature winter outdoor construction sites and high-temperature continuous full-load operation in summer. This integrated oil seal repair kit contains a main single-lip oil seal, multiple HNBR flat gaskets, dust-proof auxiliary O-rings and wear-resistant backup rings, forming a multi-layer composite sealing barrier on the axle rotating shaft. It can thoroughly prevent internal gear oil leakage, block external mud, sand and sewage from invading the axle bearing chamber, avoid bearing premature wear and axle gear dry grinding failure, and maintain stable lubrication pressure of the front drive axle system for a long time. All parts inside the kit adopt exclusive dimensional parameters matched with WA320-8 front axle hub, cannot be mixed with seal kits of mini loaders or large heavy-duty loaders, and are suitable for one-stop axle maintenance at municipal machinery repair shops and professional wheel loader after-sales service stations, effectively avoiding repeated shutdown maintenance caused by scattered single seal parts procurement.

Q: What unique comprehensive sealing advantages does this full NBR+HNBR oil seal kit have compared with single-piece aftermarket oil seals or ordinary rubber-only seal kits used for WA320-8 wheel loader front axles?
A: The front axle hub shaft of WA320-8 wheel loader runs at high rotating speed for tens of thousands of hours every month, long-term immersed in mineral gear oil, and frequently impacted by mixed mud and gravel from construction sites. The main oil seal of this kit uses fiber-reinforced NBR nitrile rubber, which has far better oil resistance, wear resistance and compression recovery performance than ordinary low-cost NBR rubber; the galvanized carbon steel outer skeleton effectively avoids rust expansion deformation under humid working conditions, and the stainless steel coil spring can maintain stable lip pre-tightening force for more than 5000 working hours without fatigue relaxation. The matched auxiliary gaskets and O-rings adopt low-temperature HNBR material, which can keep soft sealing elasticity at -32℃ northern winter construction environment, while ordinary single oil seal only provides single-layer oil blocking function without matching dust-proof and gap filling accessories. Compared with split separate seal accessories, this integrated kit realizes one-time complete overhaul without matching scattered gaskets separately, greatly shortening maintenance time; compared with full rubber seal kits without metal skeleton, it will not produce permanent deformation and lip failure under long-term rotating extrusion. This matched multi-component kit extends the overall axle sealing service life by more than 85% compared with single replacement oil seals, and reduces repeated maintenance labor and accessory repeated purchase costs for construction fleet owners.

Q: How can maintenance technicians quickly distinguish each component of this 07011-10058 oil seal kit through color, surface texture and structural differences, and tell it apart from inferior imitation kits?
A: The core main oil seal inside the kit is dark black matte NBR rubber lip with fine uniform matte grain, the outer skeleton is silver-gray galvanized steel with smooth anti-rust coating without rust spots, and the built-in spring is bright silver stainless steel spiral constant force spring with uniform coil spacing. The auxiliary flat gaskets and O-rings are light black semi-matte HNBR rubber with soft elastic touch, different from the hard brittle recycled rubber of inferior parts. The main oil seal adopts single-lip rotary shaft sealing structure with integrated outer skeleton, which is the core feature to distinguish it from double-lip oil seals for other loader axles; the kit is equipped with 3 specifications of gaskets and 2 sizes of dust-proof O-rings, the complete matching combination is the exclusive feature of genuine 07011-10058 kit. Every main oil seal surface is engraved with micro laser part number 07011-10058 and size parameters, while inferior imitation oil seals have blurry or missing marking codes, thin easily bent iron skeleton, rough rubber surface with air bubbles, and incomplete supporting gasket accessories. The whole kit is packaged with labeled specification list, which can realize one-to-one quick classification during axle disassembly maintenance.

Q: What stable pressure, rotation speed and temperature range can the whole oil seal kit withstand to maintain long-term leak-free sealing of WA320-8 front drive axle hub?
A: The complete oil seal kit can stably adapt to the front axle internal gear oil pressure of 0.3–0.8Mpa for a long time, and resist instantaneous peak pressure impact up to 1.2Mpa generated during loader rapid lifting and heavy load shoveling. The maximum allowable continuous rotating linear speed of the main oil seal lip reaches 0.62m/s, fully matching the daily full-load driving rotation frequency of WA320-8 medium wheel loader. The overall applicable working temperature range is -32℃ ~ +128℃, which can meet cold start requirements of open-air construction sites in northern winter and long-hour high-temperature operation of axles under full aggregate loading in summer. NBR main seal lip resists gear oil swelling and aging, HNBR auxiliary accessories resist low-temperature hardening, galvanized steel skeleton avoids humid mud corrosion, all components jointly resist thermal aging, sand particle abrasion and hydraulic oil erosion after millions of rotating cycles, realize zero internal oil leakage and zero external mud intrusion all year round, and effectively reduce abnormal axle noise, bearing overheating and gear abrasion faults caused by seal aging.

Q: What hidden front axle core failure risks will construction fleet managers face if they replace this complete matching oil seal kit with cheap inferior single oil seals or mismatched mixed rubber seal parts?
A: Low-cost inferior single oil seals only contain simple recycled rubber sealing lip without matched HNBR dust-proof gaskets and anti-rust thick steel skeleton. Under long-term high-speed rotation and mud splashing working conditions, the thin iron skeleton is easy to rust and expand, the rubber lip loses pre-tightening force quickly, resulting in continuous gear oil leakage from the axle hub. A large amount of lubricating oil loss will lead to dry friction of front axle bearings and drive gears, causing serious gear tooth surface wear, bearing ablation and axle locking failure. At the same time, without supporting dust-proof O-rings, construction mud and gravel will penetrate into the bearing cavity, scratch the shaft surface and accelerate seal secondary damage. The WA320-8 wheel loader will appear slow driving power response, abnormal axle roar, frequent axle overheating alarm, and forced shutdown during material loading operation. The overhaul cost of replacing damaged axle gears and bearings is far higher than the cost of a complete oil seal kit; sudden axle locking during downhill heavy load shoveling will also cause vehicle out of control, bringing major equipment collision losses and construction site safety hazards. Frequent unexpected shutdown will interrupt municipal road backfilling and quarry aggregate loading construction schedules, generating a large amount of extra overtime labor and loader idle rental losses.

6. Exhibition and Wearhous

Oil seals,Hydraulic Seals, Cylinders Seal Kits, And More