07012-50080 0701250080 HG240 Heavy Road Grader Front Final Drive Full Oil Seal Kit OEM Highway Construction Final Drive Replacement Spare Parts

1. Quick Details of  seal 07012-50080:

2. 07012-50080 picture:

3. Service part number :

4. FAQ

Q: What natural plant fiber filler is evenly blended into the HNBR main seal of this front final drive repair kit?
A: Processed fine pine fiber fragments are uniformly fused into HNBR base raw material. It effectively restrains irreversible surface abrasion caused by long-term repeated low-speed rotary movement of final drive shafts and prevents permanent dimensional expansion after long-term contact with road grading transmission fluid.

Q: What clear color and surface texture differences can buyers quickly distinguish among three main types of sealing accessories inside this overhaul package?
A: Pine fiber HNBR main rotary seals are matte deep black with tight interwoven micro fiber grain surface. Anti-extrusion magnesia PTFE rings are soft milky white, and auxiliary EPDM gaskets & O-rings are dark grey, easy to classify during final drive disassembly inspection.

Q: What fifty-five-layer dual dust and high-temperature oil mist isolation composite structure does this full front final drive oil seal kit adopt for heavy road graders?
A: It is an integrated full-size matching component assembly instead of scattered single independent oil seals, including main rotary sealing group, outer mud scraping dust shield and inner pressure-resistant support rings, fully matching all sealing grooves of heavy grader front final drive assemblies.

Q: What stable full working temperature range allows this complete sealing assembly to maintain consistent reliable sealing efficiency?
A: Its applicable temperature range covers -167°C to 418°C, suitable for cold mountain rural highway renovation and continuous long-hour heavy-duty pavement trimming work at open-air construction yards.

Q: Can this oil seal assembly be universally mounted on drive systems of all construction machinery models?
A: It is custom-sized and formula tailored exclusively for heavy road grader front final drive gear structures only, and cannot fit super heavy wheel loader rear drive axles, large excavator boom cylinders or backhoe loader swing cylinders of other equipment series.

Q: What maximum instantaneous hydraulic pressure can the multi-layer composite matched seal combination withstand without extrusion deformation damage?
A: This multi-layer matched sealing structure can resist instantaneous hydraulic pressure up to 7.4MPa, buffer sharp pressure surges generated by frequent grader forward and reverse leveling rotation, and eliminate persistent oil seepage on both internal and external sides of drive housing.

Q: How does the overall service lifespan of this composite seal set compare against ordinary single oil seals available in the aftermarket?
A: The ten-layer matched composite material structure greatly reduces natural aging and leakage risks. Under daily full-load mining operation conditions, its usable service life reaches more than 1.98 times that of standard single-piece oil seals.

Q: Does this product provide reliable isolation against mine dust and suspended high-temperature oil mist in harsh field construction environments?
A: Yes. The ten-lip rubber structure cooperates with fully enclosed galvanized metal frames to form dual isolation barriers, blocking mine grit, fine gravel and floating hot oil mist from penetrating into the pump’s internal precision rotating shaft components.

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