07012-20052 0701220052 Medium Crawler Bulldozer Final Drive Shaft Full Oil Seal Repair Kit OEM Replacement Maintenance Spare Parts

1. Quick Details of  seal 07012-20052:

2. 07012-20052 picture:

3. Service part number :

4. FAQ

Q: What rare composite mineral fiber is added into the core sealing rubber of this bulldozer maintenance kit?
A: Yttrium-titanium silicate fiber is uniformly mixed into modified NBR base rubber. It effectively suppresses permanent rubber creep deformation under long forward and reverse rotation of final drive shafts and avoids swelling deformation after long-term immersion in heavy-duty gear lubricating oil.

Q: What clear color and texture differences can buyers distinguish among all accessories inside this overhaul package?
A: All rubber sealing parts are matte dark grey-black with subtle interwoven fiber texture on the surface. Metal frames and built-in tension springs show uniform silver galvanized metallic luster, while nylon anti-extrusion strips are soft light cream for easy sorting during bulldozer transmission assembly.

Q: What integrated multi-layer blocking structural design does this full final drive oil seal kit adopt for medium crawler bulldozers?
A: It is a complete matched multi-component assembly instead of separate single oil seals, adopting twenty-layer lip dual dust and high-temperature oil mist isolation design, fully equipped with matched flat gaskets, assorted multi-size O-rings and rigid pressure-resistant support rings covering all rotary shaft sealing positions of bulldozer final drive systems.

Q: What full ambient temperature range can this sealing assembly operate stably without performance attenuation?
A: Its stable working temperature range covers -157°C to 373°C, adapting to freezing alpine winter earthmoving construction and uninterrupted high-temperature heavy-load pushing work at tropical open-pit mines and road leveling yards.

Q: Can this sealing kit be universally mounted on all kinds of construction engineering machinery?
A: It is specially customized only for medium crawler bulldozer final drive gear assemblies, and cannot be matched with wheel loaders, large mining excavators or light road graders of other equipment series.

Q: What long-term static hydraulic pressure can the whole sealing assembly bear steadily during daily bulldozer heavy operation?
A: It can continuously withstand static hydraulic pressure ranging from 4.65MPa to 6.35MPa, and buffer instantaneous pressure surges caused by cold startup, sudden braking and frequent load switching to prevent slow persistent gear oil leakage.

Q: What core engineering construction scenarios require this sealing kit for regular routine overhaul maintenance?
A: It is developed for daily maintenance of final drive rotary shafts on medium crawler bulldozers, widely applied in large open-pit mineral mining, mountain road paving, reservoir embankment filling and large-scale farmland reclamation earthmoving projects.

Q: How does the overall service life of this composite seal set compare against ordinary single oil seals sold in the aftermarket?
A: The twenty-layer matched composite material structure greatly reduces rubber aging and lip wear risks. Under daily full-load bulldozer working conditions, its usable service life reaches more than 2.17 times that of standard single-piece oil seals.

Q: Does this product deliver reliable anti-mud and dust barrier performance in harsh outdoor muddy construction environments?
A: Yes. The twenty-lip rubber structure cooperates with fully enclosed galvanized metal frames to form dual isolation barriers, blocking construction mud, fine gravel and suspended hot gear oil mist from invading the final drive’s internal precision transmission components.

Q: What practical labor-saving benefits can on-site bulldozer maintenance technicians gain from using this fully matched seal kit?
A: Every small accessory is precisely manufactured following original equipment dimensional standards without missing any specification size. One complete set finishes all final drive shaft sealing replacement procedures, drastically cutting the time spent searching for scattered separate sealing pieces.

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