Sleeve Bearings: The Basics
Sleeve bearings are a type of plain bearing that consists of a cylindrical inner surface (journal) that rotates within a cylindrical outer surface (bearing). They are widely used in industrial applications due to their simplicity, low cost, and ability to handle high loads.
Type | Advantages | Disadvantages |
---|---|---|
Hydrodynamic | Self-lubricating, low friction | High speed and temperature limitations |
Hydrostatic | Precise positioning, high load capacity | Complex design, high maintenance |
Rolling-element | High precision, long life | Higher cost, noise |
Industry | Usage | Benefits |
---|---|---|
Automotive | Crankshafts, connecting rods | Reduced friction, improved fuel efficiency |
Power generation | Turbines, generators | Increased efficiency, longer lifespan |
Aerospace | Jet engines, transmissions | Reduced weight, improved performance |
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Industry Insights
The global sleeve bearing market is projected to reach $10 billion by 2025 [source: Grand View Research]. Key market drivers include the increasing demand for high-performance bearings in industrial applications.
Application | Market Size | Growth Rate |
---|---|---|
Automotive | $3.2 billion | 4.2% |
Power generation | $2.5 billion | 3.8% |
Aerospace | $1.8 billion | 5.1% |
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Frequently Asked Questions About Sleeve Bearings
Q: What is the difference between a sleeve bearing and a rolling-element bearing?
A: Sleeve bearings use a sliding contact, while rolling-element bearings use rolling contact.
Q: What are the advantages of sleeve bearings?
A: Sleeve bearings are simple, low cost, and can handle high loads.
Q: What are the disadvantages of sleeve bearings?
A: Sleeve bearings have higher friction and wear than rolling-element bearings.
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