07011-10145 0701110145 Complete Travel Reducer Oil Seal Kit OEM Replacement Spare Parts for PC1200-11 Mining Excavator Travel Reduction Gear Full Overhaul

1. Quick Details of  seal 07011-10145:

2. 07011-10145  picture:

3. Service part number :

4. FAQ

Q: Which large open-pit mining excavator model is this oil seal kit 07011-10145 exclusively designed and manufactured for, and what multi-layer closed heavy-torque sealing protection can this travel reduction gear full repair kit provide for the low-speed reciprocating rotary shaft of the walking reducer that bears long-term ground impact loads?
A: This genuine OEM matching oil seal kit marked 07011-10145 is custom-developed solely for Komatsu PC1200-11 large open-pit mining excavators, specially used for full disassembly and comprehensive overhaul of travel reduction gear output shaft sealing assembly. The travel reducer shaft bears continuous ultra-low speed high-torque rotation load, frequent forward-reverse switching impact and repeated ground vibration shock when the excavator travels over rugged rock road surfaces during open-pit ore excavation, waste material transportation and mountain stripping construction. The working environment is fully exposed to thick mine mud, sharp broken rock chips, mineralized rainwater and high heat radiated from the hydraulic tank; in high-altitude frigid mining zones, the equipment faces severe freezing in winter and continuous high-temperature baking under intense summer sunlight. This integrated all-in-one overhaul kit contains one core multi-lip impact-resistant rotary shaft oil seal, multiple sizes of flat modified HNBR sealing gaskets, multi-spec dust barrier O-rings and hybrid fiber reinforced anti-extrusion backup rings, forming a four-stage composite heavy-load sealing barrier on the travel reducer low-speed high-torque rotary shaft. It can effectively block internal heavy hydraulic travel oil from leaking out along the shaft clearance, prevent external rock sand, mud and corrosive mineral wastewater from penetrating into the reducer gear and bearing cavity, avoid premature bearing melting ablation, gear tooth surface pitting abrasion and sudden travel locking failure, and maintain stable constant lubrication pressure inside the travel reduction system under long-term uninterrupted ultra-heavy mining loads. All internal sealing accessories adopt exclusive heavy-duty customized dimensional parameters perfectly matched with the internal cavity structure of PC1200-11 travel reducer, cannot be interchanged or mixed assembled with seal kits of medium excavators or mining wheel loaders. It supports one-stop full travel reducer disassembly maintenance for large integrated mining machinery repair workshops and professional large mining excavator after-sales service stations, completely eliminating massive production shutdown losses caused by separate procurement of scattered sealing parts and mismatched installation dimensions.

Q: What stable long-term working pressure, maximum reciprocating rotary linear speed and full high-low temperature operating limit range can this full composite integrated oil seal kit withstand to maintain long-term zero internal heavy hydraulic oil leakage and zero external mine mud corrosive wastewater intrusion sealing performance for PC1200-11 large mining excavator travel reduction gears?
A: This complete integrated oil seal kit assembly can stably operate long-term under internal travel reducer hydraulic oil pressure of 1.1–2.2MPa, and resist repeated instantaneous peak hydraulic pressure impact up to 3.1MPa generated during excavator rapid heavy ore digging and full-stroke forward-reverse travel cycle operations. The maximum allowable continuous reciprocating linear speed of the main sealing lip reaches 0.64m/s, fully matching the daily long-time full-load ultra-low speed high-torque rotation frequency of PC1200-11 large open-pit mining excavators. The overall applicable full working temperature range covers -56°C ~ +166°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 travel reducers under full heavy ore digging load in sweltering summer months. Full aramid fiber reinforced NBR main lip resists hydraulic oil swelling and thermal oxidation aging, modified HNBR auxiliary seals resist ultra-low temperature embrittlement, double-layer electro-galvanized thick steel skeleton avoids mud corrosion deformation, hybrid fiber PA66 backup rings prevent permanent lip extrusion damage; all matching supporting components jointly resist thermal aging, sharp sand and rock particle abrasion and long-term hydraulic oil erosion after millions of reciprocating rotary cycles, realizing year-round stable zero travel hydraulic oil leakage and zero external mud corrosive wastewater entering the travel reducer inner cavity. The multi-lip layered dust-proof buffer structure can absorb instantaneous pressure impact pulses, block tiny metal reducer gear and bearing wear debris from directly scratching the sealing lip surface, and effectively reduce abnormal continuous roaring noise of the travel system, bearing overheating and gear tooth surface pitting abrasion faults caused by early seal aging and failure.

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