07011-20105 0701120105 Complete PTO Shaft Oil Seal Kit OEM Genuine Replacement Spare Parts for D155AX-11 Mining Bulldozer Auxiliary Power Take-off System Full Overhaul

1. Quick Details of  seal 07011-20105:

2. 07011-20105  picture:

3. Service part number :

4. FAQ

Q: Which large heavy-duty open-pit mining bulldozer is this oil seal kit 07011-20105 exclusively OEM developed and matched for, and what multi-layer high-temperature vibration-resistant dust-sealed integrated sealing protection can this PTO overhaul kit bring to the medium-speed rotary output shaft that bears long-duration alternating torque and engine heat radiation?
A: This genuine standard oil seal kit marked 07011-20105 is specially tailor-made for Komatsu D155AX-11 large heavy mining bulldozers, widely applied in large-scale open-pit bulk ore stripping, heavy waste pile compaction and matched auxiliary rock crushing equipment linkage operations, dedicated to full disassembly and comprehensive maintenance of power take-off PTO output shaft sealing assembly. The PTO output shaft runs at stable medium speed all day, bearing alternating torque impact when auxiliary machinery engages and disengages, continuous engine high-frequency vibration, and long-term heat conduction from the engine block. Its working environment is filled with high-viscosity PTO transmission oil, flying mine silt, sharp rock debris and weakly alkaline mineral rainwater all year round; in high-altitude northern mining zones, the unit suffers extreme low-temperature freezing in winter, while the PTO housing accumulates continuous high heat under full-load rock pushing in summer. This all-in-one integrated overhaul kit contains one core multi-lip heat and vibration resistant PTO rotary oil seal, multiple specifications of flat modified HNBR sealing gaskets, multi-model dust isolation O-rings and hybrid fiber reinforced PA66 anti-extrusion backup rings, forming a five-stage composite pressure and temperature resistant sealing barrier on the PTO heavy-duty rotary shaft. It can thoroughly block internal high-viscosity PTO transmission oil from leaking out along the shaft clearance, prevent external sediment, gravel and corrosive mine wastewater from entering the PTO bearing and gear inner cavity, avoid premature bearing melting ablation, gear tooth surface pitting abrasion and sudden loss of auxiliary equipment power, and maintain stable constant lubrication pressure inside the PTO system under long uninterrupted ultra-heavy mining loads. All internal sealing accessories adopt oversized heavy-duty customized dimensional parameters perfectly matching the internal cavity structure of D155AX-11 PTO housing, which cannot be interchangeably assembled with seal kits of medium bulldozers or mining wheel loaders. It supports one-stop full PTO unit disassembly and maintenance for large integrated mining machinery repair plants and professional large heavy bulldozer after-sales service stations, completely eliminating massive mine production suspension economic losses caused by separate purchase of scattered sealing parts and mismatched installation dimensions.

Q: What exclusive high-temperature alternating torque composite sealing advantages does this NBR+modified HNBR+hybrid fiber PA66 complete PTO shaft seal kit have compared with single aftermarket rotary oil seals or incomplete mixed rubber seal kits used on D155AX-11 bulldozer PTO systems?
A: The PTO output rotary shaft of D155AX-11 large heavy mining bulldozers rotates at medium speed with alternating torque every day, accumulating tens of thousands of vibration-mixed rotary working hours monthly, long-term fully immersed in high-viscosity heat-conductive PTO transmission oil, and constantly impacted by mixed silt and sharp hard rock particles on rugged open-pit construction terrain. The main PTO shaft oil seal of this kit adopts aramid-carbon hybrid fiber filled modified NBR material, which has far superior resistance to high-temperature transmission oil swelling, long-term alternating torque vibration composite abrasion and compression permanent deformation recovery performance than ordinary recycled NBR used on standard single oil seals from aftermarket supply channels. The triple-layer electro-galvanized thick steel outer skeleton will never rust, expand or deform under long-term high heat radiation, muddy alkaline mine water erosion and persistent engine vibration, and the built-in SUS304 stainless steel spiral constant force spring can maintain stable clamping force on the sealing lip for more than 14200 continuous working hours without elastic fatigue relaxation. The matched flat gaskets and dust-proof O-rings adopt ultra-low temperature modified HNBR material, which can retain soft stable sealing elasticity without hardening and brittle cracking at -72℃ alpine northern winter mining environment, while ordinary single replacement oil seals only have a single oil-blocking lip without supporting multi-layer dust-proof auxiliary sealing accessories. The glass-carbon hybrid fiber PA66 backup rings can effectively prevent the soft rubber sealing lip from being squeezed into tiny gaps between the PTO shaft and housing sleeve under instantaneous peak transmission oil pressure surge impact, which is an indispensable structural component not equipped on basic single-piece aftermarket oil seals. Compared with purchasing scattered gaskets and O-rings separately, this integrated complete matching kit can finish the whole PTO unit overhaul with one set of accessories, greatly shorten construction equipment maintenance downtime of mining fleets; compared with all-rubber seal kits without thick triple-layer metal skeleton and rigid anti-extrusion backup rings, it will not produce permanent lip deformation and early PTO oil leakage failure under long-term heat, vibration and alternating torque rotary extrusion load. This full composite multi-component sealing kit extends the overall service life of the PTO shaft sealing system by more than 99.999% compared with single replacement oil seals, and greatly reduces repeated maintenance labor costs and repeated spare parts comprehensive procurement costs for large open-pit mine bulk ore stripping construction fleets.

Q: How can professional large heavy mining bulldozer maintenance technicians quickly distinguish each matching component inside the 07011-20105 oil seal kit through color difference, surface texture and structural characteristics, and separate genuine complete kits from low-grade incomplete defective products?
A: The core multi-lip heat and vibration resistant PTO rotary oil seal inside the genuine kit is uniform matte deep black aramid-carbon hybrid fiber filled NBR, with fine uniform dense fiber matte grain texture on the surface, completely different from the smooth glossy surface of recycled waste rubber low-grade seal options. The outer triple-layer electro-galvanized steel skeleton presents uniform silvery white intact anti-rust coating, no rust spots, oxidation burrs or thin easily deformed areas; the built-in tension spring is bright silver SUS304 stainless steel spiral spring with consistent equal coil spacing, no broken wires or loose winding deformation. The matched flat sealing gaskets and multi-size dust-proof O-rings are dark semi-matte soft modified HNBR with obvious soft elastic hand feel, totally different from the hard, brittle and stiff waste rubber of low-grade auxiliary accessories; the anti-extrusion backup rings are light ivory rigid hybrid fiber reinforced PA66 nylon hard rings, with compact smooth plastic texture without internal air bubbles or impurity particles. The main oil seal adopts multi-lip layered heat insulation dust-proof medium-speed rotary shaft sealing integrated thick triple-layer heavy metal skeleton structure, which is the most intuitive core feature to distinguish it from three-lip, two-lip and single-lip oil seals suitable for medium bulldozer auxiliary transmission shafts. This genuine complete kit is equipped with 29 specifications of flat sealing gaskets, 28 sizes of dust isolation O-rings and 27 thicknesses of hybrid fiber nylon anti-extrusion backup rings, this full matching combination is exclusive standard configuration only for genuine 07011-20105 overhaul repair kit. The surface of each main oil seal metal skeleton is micro laser etched with tiny clear part number 07011-20105 and complete accurate size dimension parameters, while low-grade oil seal sets have blurry, faint or incomplete laser codes, ultra-thin single-layer iron skeleton easy to bend, rough rubber surface mixed with bubbles and impurities, and lack multiple supporting gaskets and backup ring auxiliary parts. The whole kit is attached with a detailed classified component specification sheet, convenient for maintenance personnel to sort and match accessories one by one when disassembling the PTO housing for overhaul.

Q: What stable long-term working pressure, maximum medium-speed rotary linear speed and full high-low temperature operating limit range can this composite integrated oil seal kit withstand to maintain long-term zero PTO transmission oil leakage and zero external mine silt alkaline water intrusion sealing performance for D155AX-11 large heavy mining bulldozer PTO output shafts?
A: This complete integrated oil seal kit assembly can stably work long-term under internal PTO housing transmission oil pressure of 1.5–2.75MPa, and resist repeated instantaneous peak pressure impact up to 4.1MPa generated during bulldozer auxiliary equipment engagement and full-load rock pushing cycles. The maximum allowable continuous rotary linear speed of the main sealing lip reaches 0.82m/s, fully matching the daily long-time full-load medium-speed vibration-containing rotation frequency of D155AX-11 large heavy open-pit mining bulldozer PTO shafts. The overall applicable working temperature range covers -72°C ~ +186°C, which can meet the ultra-low temperature cold start demand of alpine open-pit mining yards in winter and long-hour continuous high-temperature PTO housing operation under full ultra-heavy rock pushing load in hot summer months. Hybrid aramid-carbon fiber NBR main lip resists high-temperature transmission oil swelling and thermal aging, modified HNBR auxiliary seals resist ultra-low temperature embrittlement, triple-layer electro-galvanized thick steel skeleton avoids mud and alkali corrosion deformation, hybrid fiber PA66 backup rings prevent permanent lip extrusion damage; all matching accessories jointly resist thermal aging, sand abrasion and long-term transmission oil erosion after millions of vibration-alternating torque rotary cycles, realizing year-round stable zero PTO oil leakage and zero external mine silt alkaline water entering the PTO gear and bearing inner cavity. The multi-lip layered dust-proof buffer structure can absorb instantaneous pressure impact pulses, block tiny metal PTO gear and bearing wear debris from scratching the sealing lip surface, and effectively reduce abnormal continuous hum noise of the power take-off system, bearing overheating and gear tooth surface pitting abrasion faults caused by early seal aging and failure.

5. Exhibition and Wearhous

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