114-1497 1141497 Wear-Resistant Floating Oil Seal for Excavator Final Drive Systems 320D RR 322B

1. Quick Details of  seal 114-1497:

2. 114-1497 picture:

3. Service part number :

4. FAQ

Q: What unique advantages does high-chromium cast iron have compared with ordinary cast iron used for sealing rings?
A: Ordinary cast iron has low surface hardness and poor wear resistance. After a short period of mutual friction, it is easy to produce scratches and wear gaps, leading to seal failure and oil leakage. High-chromium cast iron adds chromium elements during smelting, which greatly improves surface hardness, wear resistance and corrosion resistance. Even under continuous high-speed friction, heavy load pressure and erosion of muddy oil mixture, its sealing contact surface will not be worn or deformed easily. It also resists oxidation and rust in damp and muddy working environments, maintaining stable geometric shape and sealing clearance for a long time, which is the key to long service life of floating oil seals.

Q: What performance features make the matched nitrile rubber elastomer suitable for floating sealing structure?
A: The working parts of excavator final drive will produce slight vibration and position deviation during rotation. Ordinary rubber is prone to permanent deformation and fatigue failure after long-term repeated compression and rebound. This customized nitrile rubber elastomer has excellent elastic recovery and anti-fatigue performance. It can continuously provide stable preload to keep the two iron sealing rings tightly fitted. When the drive parts have minor displacement or vibration, it can flexibly adjust the fitting state to make up for gaps. In addition, it has good compatibility with gear lubricating oil and will not swell, soften or harden after long-term contact with oil, ensuring lasting and reliable elastic support.

Q: What is the working principle of the floating structure during the operation of the final drive?
A: When the excavator travels, one cast iron ring rotates along with the drive gear assembly, while the other ring remains fixed with the housing. Relying on the pre-tightening force of rubber elastomers, the two mirror-finish end faces keep close contact all the time. A thin layer of lubricating oil film is formed between the two friction surfaces, which reduces friction and realizes dynamic sealing. The so-called "floating" means the assembly can tolerate tiny radial and axial floating displacement caused by mechanical vibration and load changes, avoiding seal damage or oil leakage due to part misalignment. This adaptive structure is very suitable for engineering machinery working under complex vibration conditions.

Q: What kind of working pressure and rotating speed can this floating oil seal withstand?
A: This product is developed for heavy-duty excavator final drive. It can stably bear the conventional internal working pressure of drive gearboxes for a long time, and also resist instantaneous pressure surges caused by sudden start, stop and load change. In terms of rotating speed, it adapts to the standard operating rotating speed of excavator track drive systems. The precision ground friction surface and oil film lubrication structure ensure that no overheating or abnormal wear occurs during continuous rotating operation, fully meeting the daily working requirements of large excavators.

Q: Are all parts manufactured strictly according to OEM dimensional and assembly standards?
A: Every cast iron ring and rubber elastomer is produced with precision machining in strict accordance with original equipment drawings and tolerance parameters. The outer diameter, inner diameter, thickness and assembly clearance of the complete set are completely consistent with original parts. During on-site replacement, workers can directly install it without any cutting, grinding or modification, and the assembly tightness fully meets the design requirements.

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