208-27-00210 2082700210 Mining-Grade Duo Cone Floating Oil Seal for Komatsu Large Excavator Travel Units PC450-7-M1 PC450-7E0

1. Quick Details of  seal 208-27-00210:

2. 208-27-00210 parts on group :

3. 208-27-00210 picture:

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5. FAQ

Q: Why are chromium-molybdenum alloy steel and modified NBR chosen for this seal?
A: The alloy steel features high hardness and strong impact resistance, resisting wear and cracking in tough mine conditions. The heat-resistant modified NBR maintains stable elasticity at high temperatures, providing lasting pre-tightening force for the whole assembly.

Q: Please describe its appearance, color and structure.
A: The steel rings are dark silver with mirror-smooth sealing surfaces and tapered profiles. The rubber parts are deep black elastic sleeves. The full set consists of two steel rings and two rubber rings with compact and symmetric structure.

Q: What advantages does chromium-molybdenum alloy steel have over ordinary steel?
A: It balances hardness and toughness well. It is not easy to dent or crack under strong impact, and also has good rust resistance against mine sewage and slurry.

Q: How does heat-resistant modified NBR perform compared with common rubber?
A: It resists high temperature and aging effectively. It will not soften or deform after long-term operation, and keeps stable elasticity to ensure tight fitting between sealing surfaces.

Q: How does the floating structure work during operation?
A: One steel ring rotates with the hub while the other stays fixed. The rubber rings keep the two sealing faces closely attached. The floating design adapts to vibration and slight displacement to avoid oil leakage.

Q: What key points should be noted during installation?
A: Clean all dirt and old seal residues first. Do not scratch the polished steel surfaces or twist the rubber sleeves. Run a low-speed test after assembly to check for leaks.

Q: What problems will inferior seals cause?
A: Low-quality parts wear and age quickly, leading to oil leakage. Mud and sand will invade the drive unit, causing component damage and unexpected equipment downtime.

Q: How about its dustproof and waterproof performance?
A: The combined structure forms a tight barrier. It can effectively block mud, dust and sewage, keeping the internal lubrication system clean all the time.

Q: How is the product packaged for transportation?
A: Steel rings are coated with anti-rust grease and wrapped with moisture-proof paper. Rubber parts are sealed in plastic bags. The whole set is packed in plastic boxes and cartons with foam for protection.

6. Exhibition and Wearhous

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