Modular Bearing Sealing Module for Fast Seal Replacement
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Solution Overview
Problem
Large-diameter rolling bearings used in aggressive environments, such as marine applications, face seal wear and maintenance challenges, requiring frequent seal replacements that are costly and disrupt machine operations.
Innovation Solution
A modular sealing system where the sealing module is reversibly secured to the bearing rings, allowing for easy removal and replacement without disassembling the bearing, featuring a friction ring that shifts to maintain a new contact surface and extend seal life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seals are fixed to bearing rings in conventional designs, then sealing function is provided, but maintenance requires expensive downtime and machine shutdown
Solution Approach 1:
The sealing system is divided into modular components: a carrier assembly that mounts to the bearing ring, separate seals that attach to the carrier, and a friction ring that can be independently replaced. This segmentation allows the seals to be removed and replaced without removing the carrier or disassembling the bearing, significantly reducing maintenance downtime while maintaining reliable sealing function.
2Reliability
If seals are fixed to bearing rings, then sealing function is provided, but seal replacement requires disassembly and is costly
Solution Approach 1:
The sealing system is divided into modular components: a carrier assembly that mounts to the bearing ring, separate seals that attach to the carrier, and a friction ring that can be independently replaced. This segmentation allows the seals to be removed and replaced without removing the carrier or disassembling the bearing, significantly reducing maintenance downtime while maintaining reliable sealing function.
Solution Approach 2:
The seal design incorporates dynamic elements including a flexible sealing lip that maintains contact with the friction ring, and a spring-loaded or elastomeric carrier that allows for easy attachment and detachment of seals. This dynamic design enables quick seal replacement while ensuring continuous reliable sealing during operation.
3Productivity
If friction ring contact surface is used continuously, then seal function operates, but friction ring wear limits service life
Solution Approach 1:
The friction ring is designed with the capability for axial movement relative to the seals. During maintenance, the friction ring can be axially shifted to present a fresh contact surface to the sealing lips. This dynamic repositioning extends the service life of the friction ring by distributing wear across multiple surfaces, while maintaining continuous operational productivity between maintenance intervals.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates maintenance by reducing downtime and extending the service life of the friction ring, thereby lowering maintenance costs and improving operational efficiency.
Implementation Method 1
The sealing lip of the seal comes into contact with the friction ring
Data Source
AI summary
A rolling bearing providing a first ring and a second ring capable of rotating concentrically relative to one another, at least one row of rolling elements arranged between first and second raceways of the first and second rings, and at least one seal provided with at least one sealing lip. The first ring includes at least one first rolling ring having the first raceway and a first sealing ring secured to the first rolling ring. The second ring further includes at least one second rolling ring having the second raceway and a second sealing ring secured to the second rolling ring. The bearing also further includes a sealing module reversibly secured to the first and second sealing rings.