07011-11070 0701111070 Complete Brake Master Cylinder Oil Seal Kit OEM Replacement Spare Parts for WA500-10 Mining Wheel Loader Brake Hydraulic System Full Overhaul

1. Quick Details of  seal 07011-11070:

2. 07011-11070  picture:

3. Service part number :

4. FAQ

Q: Which medium large open-pit mining wheel loader model is this oil seal kit 07011-11070 exclusively customized for, and what multi-layer anti-brake-fluid and anti-jitter integrated sealing protection can this brake master cylinder full overhaul kit provide for the short-stroke high-frequency reciprocating piston assembly that bears frequent emergency braking impact loads?
A: This genuine OEM standard oil seal kit marked 07011-11070 is tailor-made exclusively for Komatsu WA500-10 medium large open-pit mining wheel loaders, specially designed for full disassembly and comprehensive overhaul of brake master cylinder piston sealing assembly. The brake master cylinder piston bears short-stroke high-frequency reciprocating push-pull load, instantaneous pressure surge during emergency braking and continuous vehicle vibration during mine ore loading and material transportation. The working environment is exposed to brake hydraulic fluid, mine silt, gravel dust, rainwater and mineral alkali all year round; in high-altitude northern mining areas, the equipment faces ultra-low temperature freezing in winter and long-term heat accumulation inside the brake cylinder under summer high temperature. This all-in-one integrated full oil seal overhaul kit contains one core multi-lip anti-fluid erosion piston oil seal, multiple size-matched flat modified HNBR sealing gaskets, multi-spec isolation dust-proof O-rings and hybrid fiber reinforced PA66 anti-extrusion backup rings, constructing a multi-stage closed composite sealing barrier on the brake cylinder high-precision piston. It can thoroughly block internal brake hydraulic fluid from leaking outward along the piston gap, fully prevent external sediment, mud and corrosive alkaline mine wastewater from invading the cylinder inner cavity, effectively eliminate premature piston surface scratch wear, internal valve jamming and sudden brake failure risks, and maintain stable constant brake pressure inside the master cylinder system for long-term uninterrupted heavy-load mining operation. All internal sealing accessories adopt exclusive medium heavy-duty customized dimensional parameters perfectly matched with WA500-10 brake master cylinder internal structure, cannot be interchanged or mixed matched with seal kits of large wheel loaders or mining excavators, suitable for one-stop full brake cylinder disassembly maintenance at medium integrated mining machinery repair factories and professional medium large mining wheel loader after-sales service stations, completely eliminate repeated production equipment shutdown huge economic losses caused by scattered single sealing parts separate purchasing and mismatching assembly sizes.

Q: What stable long-term working pressure, maximum reciprocating linear speed and full high-low temperature operating limit range can this full composite integrated oil seal kit withstand to maintain long-term zero brake fluid leakage and zero external mine silt alkaline water intrusion sealing performance for WA500-10 medium large mining wheel loader brake master cylinders?
A: This complete integrated oil seal kit assembly can stably work long-term under internal brake cylinder hydraulic pressure of 1.28–2.45MPa, and resist repeated instantaneous peak pressure impact up to 3.5MPa generated during emergency braking and full-load mine material loading. The maximum allowable continuous reciprocating linear speed of the main sealing lip reaches 0.56m/s, fully matching the daily frequent short-stroke operation frequency of WA500-10 mining loader brake master cylinders. The overall applicable working temperature range covers -60°C ~ +174°C, which can satisfy the ultra-low temperature cold startup demand of alpine open-pit mining yards in winter and long-hour continuous high-temperature operation of brake cylinders under summer strong sunlight. Aramid fiber filled NBR main lip resists brake fluid swelling and thermal aging, modified HNBR auxiliary seals resist ultra-low temperature embrittlement, double-layer hot-dip galvanized thick steel skeleton avoids mud and alkali corrosion deformation, hybrid fiber PA66 backup rings prevent permanent lip extrusion damage; all matching supporting components jointly resist thermal aging, sand abrasion and long-term brake fluid erosion after millions of short-stroke reciprocating cycles, realizing year-round stable zero brake fluid leakage and zero external mine silt alkaline water entering the brake cylinder inner cavity. The multi-lip layered dust-proof buffer structure can absorb instantaneous pressure impact pulses, block tiny piston and valve wear debris from scratching the sealing lip surface, and effectively reduce abnormal brake jitter noise, cylinder overheating and piston surface pitting abrasion faults caused by early seal aging and failure.

5. Exhibition and Wearhous

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