Oilless Bush & Sliding Plate Applications in Cranes and Bridge Machinery
Oilless Bush & Sliding Plate Applications in Cranes and Bridge Machinery
High-Performance Self-Lubricating Bronze Bushing Solutions & Technologies. Minimize downtime, extend service life, and reduce costs for dynamic applications.
Oilless Bush & Sliding Plate Applications in Cranes and Bridge Machinery
1. Overview
Oilless Bushes (Self-Lubricating Bushes) and Sliding Plates are critical friction components widely used in modern cranes and bridge machinery. Designed for heavy-load, low-speed, and high-vibration applications, these components replace traditional lubricated bearings and ensure reliable, maintenance-free operation.
Material & Design:
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Oilless Bush: High-strength copper alloy with embedded solid lubricants (PTFE, graphite).
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Sliding Plate: Copper alloy or self-lubricating composite material for large-area sliding support.
Key Advantages:
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Maintenance-free, no additional lubrication required
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High wear resistance and load capacity
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Low friction coefficient, stable performance
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Suitable for harsh, high-vibration environments
2. Typical Applications
| Machinery Type | Application Location | Function |
|---|---|---|
| Bridge Cranes | Equalizer joints, wheel hub bushes | Supports rotational or swinging movement, reduces friction and wear |
| Gantry Cranes | 2/3-wheel and 3/6-wheel equalizer joints | Ensures smooth rotation and swinging, withstands radial load |
| General Machinery | Sliding guides, pivot joints, heavy-duty hinges | Replaces conventional lubricated bearings, reduces maintenance, improves reliability |
3. Oilless Bush vs Sliding Plate
| Component | Material | Key Features | Application |
|---|---|---|---|
| Oilless Bush | Copper alloy + solid lubricant | – Maintenance-free – Handles radial and axial load – Low friction, durable |
– Crane equalizer joints – Hub bushes – Heavy-duty rotating or swinging connections |
| Sliding Plate | Copper alloy / Composite / High-strength steel | – Moderate friction coefficient – Large-area contact – Shock load resistant |
– Crane sliding guides – Boom or base sliding connections – Load-bearing flat surfaces |
Technical Insight:
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Oilless Bushes are ideal for joints or pivot points subject to combined axial and radial loads.
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Sliding Plates are best for flat, large-contact surfaces where linear motion or lateral support is required.
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Combining these components in bridge cranes and equalizer joints ensures a complete, maintenance-free friction system.
4. Performance Benefits
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High Load Capacity: Supports heavy loads and dynamic impact, withstanding pressures over 100 MPa.
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Reduced Maintenance: Solid lubricants embedded in copper alloy eliminate the need for frequent greasing.
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Reliable Operation: Performs in dusty, high-humidity, or high-temperature environments.
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Extended Lifespan: Low friction and wear-resistant materials reduce downtime and operating costs.
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Versatile Design: Adaptable to 2/3-wheel, 3/6-wheel equalizers, pivot joints, sliding guides, and thrust pads.
5. Installation Recommendations
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Environmental Adaptation: Select copper-based, solid-lubricated bushes and plates for dusty, humid, or high-temperature conditions.
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Fit & Alignment: Bushes require interference fit; sliding plates require flush mounting and stable surfaces.
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Initial Lubrication: Although maintenance-free, a thin layer of grease during installation reduces break-in time and enhances lifespan.
6. Summary
In crane and bridge machinery design, Oilless Bushes handle rotational and swinging radial loads, while Sliding Plates provide linear guidance and lateral support. Together, they form a durable, maintenance-free friction system that improves operational reliability, reduces downtime, and replaces traditional lubricated bearings.
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Metal Bushing (Lubricated Metal) -Self-Lubricating Bushing Materials
Bushings are specialized, self-lubricating metal components widely utilized across various industries due to their durability and low maintenance requirements. Self-lubricating metal bushings are engineered to function without additional lubrication in numerous applications, thereby minimizing maintenance needs. These bushings are available in various series and configurations, such as flanged bushings and split bearings, to meet specific application requirements.
Metal-Polymer Anti-Friction Plain Bearings
Metal-Polymer Composite Self-lubricating Bushing Material
Steel Back + Porous Bronze Sinter + PTFE
