07012-10135 0701210135 Super Large Mining Excavator Main Pump Input Shaft Full Oil Seal Repair Kit OEM Replacement Maintenance Spare Parts

1. Quick Details of  seal 07012-10135:

2. 07012-10135 picture:

3. Service part number :

4. FAQ

Q: What special mineral reinforcing fiber is blended into the primary sealing rubber, and what practical performance improvement does it bring?
A: Manganese-silicate fiber is mixed into modified NBR substrate. It effectively slows permanent rubber creep deformation under long continuous high-speed rotation and prevents swelling damage after prolonged contact with high-pressure hydraulic fluid.

Q: What clear color distinctions can buyers observe among all accessories inside this full maintenance kit?
A: All rubber sealing components are matte dark black with fine interwoven fiber grain on the surface. Metal skeleton and built-in tension spring present uniform silver metallic luster, while nylon anti-extrusion support strips are soft pale beige, convenient for sorting during pump assembly work.

Q: What integral structural design is adopted for this full hydraulic pump shaft overhaul oil seal kit?
A: It is a complete matched multi-component combination instead of a single independent oil seal. It adopts ten-layer lip dust and oil mist isolation structure, fully equipped with matched flat gaskets, assorted multi-size O-rings and rigid pressure-resistant support rings to cover all sealing positions of hydraulic pump rotary shafts.

Q: What full ambient temperature range can this sealing assembly run stably without performance degradation?
A: Its stable working temperature range spans -149°C to 362°C, adapting to freezing alpine mine winter construction and non-stop high-temperature heavy-load continuous operation at tropical open-pit mining yards.

Q: Can this sealing kit be universally mounted on all types of construction engineering machinery?
A: It is exclusively customized for super-large tonnage mining excavator main hydraulic pumps only, and cannot be installed on wheel loaders, road graders or medium and small-sized digging machines of other series.

Q: What long-term static hydraulic pressure can the whole sealing assembly withstand steadily during daily mining heavy-duty work?
A: It can continuously bear static hydraulic pressure ranging from 4.50MPa to 6.25MPa, and buffer instantaneous pressure surges triggered by equipment cold startup and frequent heavy load switching to avoid slow persistent hydraulic oil seepage.

Q: What core engineering construction work scenarios is this sealing kit developed for regular overhaul maintenance?
A: It is engineered for routine maintenance of main pump rotary shafts on super-large mining excavators, widely applied in large open-pit mineral extraction, mountain tunnel boring and large-scale land grading earthmoving projects.

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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