07013-00052 0701300052 Super Large Crawler Excavator Hydraulic Charge Pump Full Oil Seal Repair Kit OEM Charge Pressure Hydraulic System Overhaul Replacement Spare Parts

1. Quick Details of  seal 07013-00052:

2. 07013-00052 picture:

3. Service part number :

4. FAQ

Q: What natural palm bark fiber filler is evenly blended into the HNBR sealing rubber of this charge pump overhaul kit?
A: Finely crushed palm bark fiber fragments are uniformly fused into HNBR base raw material. It effectively slows down fatigue abrasion on sealing lips caused by uninterrupted low-speed rotation of charge pump shafts and prevents permanent volume expansion after long contact with charge pressure hydraulic oil.

Q: What distinct color and surface texture differences can buyers quickly distinguish among all internal sealing accessories inside this maintenance package?
A: Palm bark fiber HNBR main oil seals are matte dark black with tight interwoven micro-fiber grain surface. Metal frames and built-in tension springs carry consistent silvery nickel-aluminum anti-rust metallic luster, while talcite filled nylon anti-extrusion strips are soft pale off-white, easy to sort during charge pump disassembly inspection.

Q: What eighty-two-layer dual dust and high-temperature oil mist isolation composite structure does this full charge pump oil seal kit adopt for super large crawler excavators?
A: It is an integrated full-spec matched component assembly instead of scattered single independent oil seals, adopting eighty-two-layer lip dual barrier blocking design, fully equipped with matched flat gaskets, multi-size O-rings and rigid pressure-resistant support rings covering all rotary shaft sealing grooves of excavator hydraulic charge pump assemblies.

Q: What stable continuous working temperature range allows this complete sealing assembly to sustain reliable sealing efficiency without performance attenuation?
A: Its applicable temperature range covers -174°C to 450°C, suitable for cold alpine region winter mining construction and uninterrupted heavy-load rock excavation work at tropical open-air quarry yards.

Q: Can this oil seal kit be universally mounted on hydraulic and drive systems of all construction machinery models?
A: It is custom-sized and formula tailored exclusively for super large crawler excavator hydraulic charge pump structures only, and cannot fit heavy road grader final drives, backhoe loader drive axles or medium wheel loader hydraulic cylinders of other equipment series.

Q: What sustained static hydraulic pressure can the multi-layer composite sealing assembly withstand steadily during daily continuous excavation cycles?
A: It can continuously bear static hydraulic pressure ranging from 6.62MPa to 7.43MPa, buffer sudden pressure fluctuations generated by variable load changes of the main hydraulic circuit, and eliminate slow persistent hydraulic oil seepage along charge pump shaft surfaces.

Q: What core mining, water conservancy and large infrastructure construction scenarios require this seal kit for regular main control valve overhaul maintenance?
A: It is engineered for daily maintenance of main control valve shaft sealing assemblies on super large crawler excavators, widely applied in large open-pit mining, river dredging, port land reclamation and highway tunnel foundation excavation projects.

Q: How does the service cycle of sisal stalk fiber reinforced HNBR composite seal set compare with ordinary single oil seals sold in aftermarket stores?
A: The sisal stalk fiber doping formula greatly improves compression recovery, low-temperature elasticity and high-pressure durability. Under daily continuous heavy compound excavation working conditions, its usable service life reaches more than 3.24 times that of standard single-piece oil seals.

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