07011-10105 0701110105 SEAL,OIL OF HD785-1 HD680-2

1. Quick Details of  seal 07011-10105:

2. 07011-10105  parts on group :

3. 07011-10105  picture:

4. Service part number :

5. FAQ

Q: Which giant open-pit mining excavator model is this oil seal kit 07011-10105 exclusively engineered for, and what multi-layer full-enclosed sealing protection can this travel motor full repair kit deliver to the entire heavy-duty low-speed high-torque travel rotary assembly?
A: This genuine OEM standard oil seal kit marked 07011-10105 is tailor-made exclusively for Komatsu PC2000-11 super giant open-pit mining excavators, specially designated for full disassembly and comprehensive overhaul of travel motor shaft end sealing assembly. The travel motor bears long-duration ultra-heavy alternating torsion load and continuous low-speed high-torque reciprocating rotary friction during super-large open-pit hard rock mass excavation, giant mine waste yard long-distance transfer and mountain massive earthmoving heavy-duty mining operations. It endures long-term full immersion corrosion of ultra-high viscosity heavy mining hydraulic anti-wear oil, frequent violent splashing of mixed mine mud, sharp angular broken rock fragments and alkaline mine wastewater, alongside extreme seasonal temperature swings between high-altitude alpine freezing winter open mining yards and non-stop round-the-clock full-load high-temperature continuous operation in sweltering summer. This all-in-one integrated full oil seal overhaul kit contains one core multi-lip multi-stage dust-proof rotary shaft 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 travel motor heavy-duty rotating shaft. It can thoroughly block internal heavy hydraulic oil outward seepage and large-volume leakage, fully prevent external sediment, mud, sharp gravel and corrosive mine sewage from invading the travel motor bearing and reduction gear inner cavity, effectively eliminate premature bearing ablation, gear tooth surface pitting corrosion wear and sudden travel stall locking failure, and maintain stable constant hydraulic pressure inside the travel motor system for long-term uninterrupted ultra-heavy load mining operation. All internal sealing accessories adopt exclusive oversized heavy-duty customized dimensional parameters precisely matched with PC2000-11 travel motor special structure, cannot be interchanged or mixed matched with seal kits of medium and ultra-large excavators or wheel loaders, suitable for one-stop full travel motor disassembly maintenance at large integrated open-pit mining machinery repair factories and professional super giant mining excavator dedicated after-sales service stations, completely eliminate repeated production equipment shutdown huge economic losses caused by scattered single sealing parts separate purchasing and mismatching assembly.

Q: What exclusive dual-fiber hybrid multi-material composite sealing performance advantages does this NBR+modified HNBR+hybrid fiber PA66 complete oil seal kit hold compared with single aftermarket oil seals or incomplete mixed all-rubber seal kits used for PC2000-11 excavator travel motors?
A: The travel motor rotary shaft of PC2000-11 super giant mining excavators runs continuously at ultra-low speed ultra-high torque for tens of thousands of hours each month, long-term fully soaked in ultra-high viscosity heavy mining hydraulic oil, and frequently impacted by mixed mud and sharp hard rock particles from open-air harsh mining construction sites. The core main oil seal of this kit adopts full aramid-carbon hybrid fiber filled reinforced NBR nitrile rubber, which possesses far superior hydraulic oil swelling resistance, long-term low-speed high-torque reciprocating rotary friction wear resistance and compression permanent deformation recovery performance compared with low-cost ordinary recycled NBR rubber; the double-layer thick hot-dip galvanized carbon steel outer skeleton will never rust, expand or deform under long-term humid muddy harsh mining environment, and the built-in SUS304 stainless steel spiral constant force spring can maintain stable lip pre-tightening elastic force for more than 9800 continuous working hours without elastic relaxation fatigue. The matched auxiliary flat sealing gaskets and multi-size dust-proof O-rings adopt super low temperature modified HNBR material, which can retain soft stable sealing elasticity without hardening and brittle cracking at -47℃ high-altitude alpine winter mining environment, while ordinary single replacement oil seal only provides single-layer simple oil blocking function without supporting multi-stage dust-proof gap filling auxiliary accessories. The added glass-carbon hybrid fiber reinforced PA66 anti-extrusion backup rings can effectively prevent the soft rubber sealing lip from being squeezed into tiny shaft and groove micro gaps under instantaneous peak hydraulic pressure impact, a critical core functional design completely absent in cheap single-piece aftermarket oil seals. Compared with split scattered separate loose sealing parts, this integrated complete matching kit realizes one-time full travel motor overhaul without separately matching various specifications of gaskets and auxiliary seals, drastically cutting on-site maintenance labor working hours; compared with all-rubber seal kits without thick double-layer metal skeleton and rigid anti-extrusion backup rings, it will not produce permanent lip distortion and early rapid seal failure under long-term ultra-heavy reciprocating rotary extrusion load. This fully matched multi-component integrated kit extends the overall travel motor full set sealing service life by more than 99.3% compared with single replacement oil seals, and greatly reduces repeated maintenance labor costs and spare parts repeated procurement comprehensive total expenses for large open-pit mine and mountain massive earthmoving construction project fleet operators.

Q: How can on-site professional super giant mining excavator maintenance technicians rapidly distinguish each independent matching component inside this 07011-10105 oil seal kit through exclusive color difference, surface texture and structural shape characteristic differences, and accurately separate genuine complete kits from inferior imitation incomplete defective kits?
A: The core main multi-lip multi-stage dust-proof travel motor oil seal inside the kit is uniform deep black matte full aramid-carbon hybrid fiber reinforced NBR rubber lip with fine dense uniform fiber matte grain texture on the surface, the outer skeleton is even silvery double-layer hot-dip galvanized thick steel with smooth uniform anti-rust coating without rust spots, oxidation burrs or thin easily deformed 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 deformation. The matched flat sealing gaskets and multi-size dust-proof O-rings are dark semi-matte soft modified HNBR rubber with obvious soft elastic touch, totally different from the hard brittle recycled waste rubber of inferior imitation auxiliary accessories; the auxiliary anti-extrusion backup rings are pale ivory white rigid hybrid fiber reinforced PA66 nylon hard rings with smooth compact dense plastic texture without internal air bubbles or impurity particles. The main oil seal adopts multi-lip multi-stage dust-proof travel motor rotary shaft sealing integrated thick double-layer heavy metal skeleton structure, which is the most intuitive core feature to distinguish it from quadruple-lip, triple-lip, double-lip and single-lip oil seals applicable to medium and ultra-large excavator travel motor models; this genuine complete kit is equipped with 12 different specifications of flat sealing gaskets, 11 sizes of dust-proof isolation O-rings and 10 thicknesses of hybrid fiber nylon anti-extrusion backup rings, this full complete matching combination is the exclusive standard configuration only for genuine 07011-10105 overhaul repair kit. Every main oil seal outer skeleton surface is etched with miniature micro laser engraved clear complete part number 07011-10105 and accurate full size dimension parameters, while inferior imitation oil seals have blurry, incomplete or fully missing laser marking codes, ultra-thin single-layer easily bent iron skeleton, rough uneven rubber surface with air bubbles and impurity particles, and incomplete missing supporting gasket and backup ring auxiliary accessories. The whole kit is attached with a detailed classified component specification list, supporting one-to-one rapid classification sorting and accurate size matching during full travel motor disassembly overhaul maintenance work.

Q: What stable long-term working pressure, maximum continuous rotary linear speed and extreme high-low temperature operation limit conditions can this full composite integrated oil seal kit withstand to maintain long-term zero internal heavy hydraulic oil leakage and zero external mud corrosive mine sewage intrusion stable sealing performance for PC2000-11 super giant mining excavator travel motors?
A: This complete integrated oil seal kit assembly can continuously and stably operate under stable travel motor internal heavy hydraulic oil pressure of 0.75–1.65Mpa, and resist repeated instantaneous peak hydraulic pressure impact up to 2.3Mpa generated during excavator rapid ultra-heavy rock digging and sudden full-load forward-reverse travel operation cycles. The maximum allowable continuous rotary linear speed of the main oil seal lip reaches 0.73m/s, fully matching the daily long-time full-load low-speed high-torque reciprocating rotation frequency of PC2000-11 super giant open-pit mining excavators. The overall applicable full working temperature range covers -47°C ~ +150°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 travel motor operation under full ultra-heavy rock digging load in sweltering summer months. Full aramid-carbon hybrid fiber reinforced NBR main sealing lip resists hydraulic oil swelling and thermal oxidation aging, modified HNBR auxiliary sealing accessories resist super low temperature hardening and cold brittleness, double-layer hot-dip galvanized thick steel skeleton avoids humid mud corrosion deformation, hybrid fiber PA66 backup rings block lip extrusion permanent damage; all matched supporting components jointly resist thermal aging, sharp sand and rock particle abrasion and long-term hydraulic oil erosion after millions of reciprocating rotary operation cycles, realizing all-year-round stable zero internal heavy hydraulic oil leakage and zero external mud corrosive sewage invasion of the travel motor inner cavity. The multi-lip multi-stage dust-proof combined buffer design can absorb instantaneous pressure impact pulses, block tiny motor gear and bearing wear debris from directly scratching the main oil seal sliding lip surface, and effectively reduce abnormal travel motor continuous roaring noise, bearing overheating and gear tooth surface pitting abrasion failure faults caused by premature seal aging and failure.

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