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T: +86-156-0511-1716
E: hp018@hpcbkj.com
E: hp018@hpcbkj.com
In Fangong Industrial Park, Dongtai Town, Dongtai City
Oil seal lip: In marine bearings, oil seals are very important components used to prevent lubricating oil leakage and external water, dust and impurities from entering the bearing. The oil seal lip is the part of the oil seal that contacts the rotating shaft or fixed parts. It is usually made of elastic materials such as rubber and has good elasticity and sealing. Its function is to form a close sealing contact with the shaft surface when the bearing is running, ensuring that the lubricating oil circulates inside the bearing, while preventing the invasion of external pollutants, thereby ensuring the normal operation and service life of the bearing.
Anchor lip: The anchor lip is an elliptical ring structure located at the outlet of the outer plate of the anchor chain barrel, which bears the collision force and friction of the anchor and makes the anchor stable and compliant. The overall thickness is formed by the lofting of the curved surface, the curved surface shape is extremely complex, and the wall thickness varies greatly. Due to the shrinkage and deformation during the casting process and solidification process, the precise control of the product's external dimensions is a common technical problem in the industry.
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The Hairy Lip is a dual-functional critical component engineered for marine systems, integrating Oil Seal Lip and Anchor Lip to solve core pain points in marine bearing sealing and anchor chain barrel protection. Tailored for harsh marine environments (seawater corrosion, constant vibration, and anchor impact), it ensures the long-term reliability of marine bearings and anchor systems—making it a staple for ship manufacturers prioritizing operational safety and low maintenance costs.
Oil Seal Lip: Blocks lubricating oil leakage and prevents external contaminants (seawater, dust, sediment) from entering marine bearings.
Anchor Lip: Withstands anchor collision/friction and stabilizes anchor positioning, complying with international marine operation standards.
Durable Materials: Adopts premium elastic rubber (for Oil Seal Lip) and high-strength cast steel (for Anchor Lip) to resist wear, aging, and seawater corrosion.
Wide Compatibility: Fits most commercial ships (cargo vessels, fishing boats, offshore support ships) and matches various bearing/anchor chain barrel specifications.
Parameter Category | Oil Seal Lip Specifications | Anchor Lip Specifications |
Material | Premium elastic rubber (oil-resistant, aging-resistant) | High-strength cast steel (curved surface lofting forming) |
Primary Function | Prevent lubricating oil leakage; block seawater/dust | Bear anchor collision/friction; stabilize anchor |
Applicable Components | Marine bearings, rotating shafts, fixed parts | Anchor chain barrel outer plate outlet |
Elasticity (Shore Hardness) | 60±5 HA | N/A (structural component, impact-resistant) |
Operating Temperature | -20℃ to 80℃ | -30℃ to 120℃ |
Corrosion Resistance | Resists seawater, lubricating oil, marine chemicals | Seawater-resistant (post-casting zinc-rich anti-rust coating) |
Dimensional Tolerance | ±0.2mm (contact surface) | ±1mm (wall thickness) |
Superior Sealing Performance: The Oil Seal Lip’s elastic rubber forms a tight, consistent seal with rotating shafts—maintaining internal lubricating oil circulation even during slight shaft misalignment.
Complex Curved Surface Design: The Anchor Lip uses 3D lofting technology to match the irregular shape of anchor chain barrel outlets, ensuring uniform load distribution and impact resistance.
Precision Control: Solves the industry-wide issue of casting shrinkage/deformation via post-casting heat treatment and CNC machining, guaranteeing accurate external dimensions.
Long Lifespan: Resists temperature fluctuations and salt spray, reducing replacement frequency by 30% compared to standard marine components.
Ocean-Going Cargo Ships: The Oil Seal Lip protects stern tube bearings from long-term seawater intrusion during transoceanic voyages, while the Anchor Lip handles high-impact anchor deployment in rough seas.
Coastal Fishing Vessels: Adapts to frequent anchor use—the Anchor Lip resists repeated friction from daily fishing operations, and the Oil Seal Lip blocks coastal sediment from damaging bearings.
Offshore Wind Support Vessels: Withstands strong waves and salt spray, ensuring anchor stability during wind turbine maintenance and bearing reliability for extended offshore stays.
Crafted from selected elastic rubber with added anti-aging additives, the Oil Seal Lip avoids hardening or cracking after 5,000+ hours of contact with marine lubricating oil. Its shaft contact surface is precision polished to a smooth finish (Ra ≤ 0.8μm), minimizing friction during rotation while maximizing sealing efficiency. The lip’s cross-section is optimized to apply consistent pressure on the shaft—preventing leakage gaps even when the shaft vibrates.
The Anchor Lip features an elliptical ring structure tailored to anchor chain barrel outlets. Its manufacturing process includes:
3D modeling of the curved surface to ensure a perfect fit;
Precision casting to form the base shape, followed by stress-relief heat treatment to eliminate internal cracks from solidification;
CNC grinding to control wall thickness (±1mm tolerance) for uniform load-bearing;
A 2-layer anti-rust coating (zinc-rich primer + epoxy topcoat) to enhance seawater corrosion resistance.
Our engineering team provides tailor-made Hairy Lip solutions based on your ship’s model, bearing size, and anchor chain barrel dimensions. We deliver 3D design drawings for confirmation before production to ensure seamless integration with existing systems.
Provide detailed manuals (dimension checks, installation sequence, torque requirements) to avoid improper installation;
Offer on-site technical support for key projects, assisting with Oil Seal Lip alignment and Anchor Lip positioning.
Conduct regular follow-ups (3/6/12 months post-installation) to monitor performance;
Supply spare parts (e.g., replacement Oil Seal Lips) with 48-hour delivery for emergency replacements;
Offer free technical training for your maintenance team (inspection methods, wear judgment).
