CuAl10Fe1 Centrifugal Cast Aluminum Bronze Bushings for Heavy-Duty Open-Pit Mining Equipment

Overview

CuAl10Fe1 (CW305G) centrifugal cast aluminum bronze bushings are engineered for heavy-load sliding bearing applications in open-pit lignite mining equipment. These bronze bushings are widely used in excavators, stackers, reclaimers, conveyors, crushers, and large rotating drive systems operating under high shock loads, abrasive dust exposure, and low-speed high-pressure conditions.

The material complies with EN 12163:2024 and is commonly specified for:

• Flanged bronze bushings

• Cylindrical plain bushings

• Through-shaft bushings

• Heavy-duty bronze bearing sleeves

• Large-size bronze bearing liners

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Material Specification

Alloy Designation

Standard	Grade
EN 12163:2024	CuAl10Fe1
CW Number	CW305G

Alloy Type

CuAl10Fe1 is a high-strength aluminum bronze alloy containing:

• Approximately 10% Aluminum (Al)

• Approximately 1% Iron (Fe)

• Balance Copper (Cu)

This alloy is designed for heavy-load bearing systems requiring high wear resistance and anti-seizure performance.

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Mechanical Properties

Typical Mechanical Properties of Centrifugal Cast CuAl10Fe1

Property	Value
Tensile Strength (Rm)	≥ 530 MPa
Yield Strength (Rp0.2)	Approx. 420 MPa
Elongation	≥ 10%
Hardness	130–170 HB
Density	7.6 g/cm³

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Why CuAl10Fe1 Aluminum Bronze is Used in Mining Equipment

High Load Capacity

CuAl10Fe1 bronze bushings can withstand extremely high surface pressures and impact loads generated by mining excavators and conveyor drive systems.

Typical applications include:

• Boom pivot joints

• Bucket pin bushings

• Track drive bearing sleeves

• Rotating support bearings

• Heavy-duty articulation joints

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Wear Resistance in Dusty Environments

Open-pit lignite mining environments contain abrasive particles that accelerate bearing wear.

Compared with tin bronze alloys, CuAl10Fe1 provides:

• Higher hardness

• Better abrasive wear resistance

• Improved resistance to scoring

• Longer service life under contaminated lubrication conditions

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Anti-Galling Performance

CuAl10Fe1 exhibits strong anti-seizure properties during:

• Boundary lubrication

• Intermittent lubrication

• Low-speed heavy-load operation

This reduces shaft scoring and bearing failure risks.

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Corrosion Resistance

The alloy performs reliably in:

• Humid mining environments

• Industrial contamination exposure

• Outdoor heavy equipment systems

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Centrifugal Casting Advantages

Why Centrifugal Casting is Preferred

Centrifugal casting is widely used for manufacturing large bronze bushings because it improves internal material integrity.

Benefits include:

• Reduced porosity

• Lower shrinkage defects

• Improved grain structure

• Higher material density

• Better fatigue resistance

• More stable mechanical properties

Compared with sand casting, centrifugal casting produces bronze bearing sleeves with significantly improved reliability for heavy industrial equipment.

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Typical Product Dimensions

Available Manufacturing Range

Parameter	Range
Inner Diameter (ID)	30–500 mm
Outer Diameter (OD)	40–800 mm
Length	40–500 mm

Large-diameter flange bushings and thick-wall bearing sleeves can be machined according to customer drawings.

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Surface Finish Requirements

Machined Surface Roughness

Surface Type	Roughness
Working Surface	Ra ≤ 3.2 μm
Non-working Surface	Ra ≤ 6.3 μm

Precision-machined sliding surfaces improve bearing contact stability and reduce frictional wear.

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Quality Control Requirements

Inspection Procedures

All finished bronze bushings are inspected according to internal quality control procedures and EN standards.

Inspection scope includes:

• Chemical composition verification

• Hardness testing

• Dimensional inspection

• Surface quality inspection

• Defect inspection

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Defect Control

The bronze bushings must be free from:

• Cracks

• Shrinkage cavities

• Porosity

• Micro-shrinkage

• Internal casting defects

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Applicable Standards

Standard	Description
EN 12163:2024	Copper and copper alloys – Bars for general purposes
EN 10204:2005	Metallic products – Inspection documents

Original mill certificates and material traceability documentation are required.

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Typical Mining Equipment Applications

Excavators and Bucket Wheel Systems

Used in:

• Boom pivot bushings

• Bucket linkage bushings

• Articulation joints

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Conveyor Drive Systems

Applied in:

• Heavy-duty roller bearing sleeves

• Drive shaft bushings

• Low-speed sliding bearings

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Stackers and Reclaimers

Installed in:

• Slewing bearing support systems

• Rotating arm joints

• Oscillating support pivots

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Crushers and Material Handling Equipment

Used for:

• Main shaft bearing sleeves

• Heavy-load rotational support points

• Dust-intensive sliding bearing systems

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Finished Machined Bronze Bushings

We supply finished machined CuAl10Fe1 bronze bushings rather than semi-finished centrifugal cast tubes.

Manufacturing capability includes:

• Centrifugal casting

• Rough machining

• Precision CNC machining

• Large-size flange machining

• Dimensional inspection

• Material certification

Maximum machining capability:

• Outer Diameter up to 800 mm

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Industrial Keywords

Primary Keywords

• CuAl10Fe1 bronze bushing

• CW305G aluminum bronze bearing

• centrifugal cast bronze bushing

• mining machinery bronze sleeve

• heavy-duty sliding bearing

• flange bronze bushing

• aluminum bronze bearing sleeve

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Semantic Keywords

• open-pit mining bushings

• lignite mining equipment bearings

• anti-wear bronze bushings

• low-speed high-load bearing material

• centrifugal cast aluminum bronze

• EN 12163 bronze alloy

• heavy equipment pivot bushings

• excavator bronze bearings

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FAQ

What is CuAl10Fe1 bronze used for?

CuAl10Fe1 is used for heavy-load sliding bearings, mining equipment bushings, marine components, and industrial wear-resistant bearing systems.

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Why use centrifugal casting for bronze bushings?

Centrifugal casting improves material density, reduces porosity, and enhances fatigue resistance in large bronze bearing components.

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Is CuAl10Fe1 suitable for mining equipment?

Yes. CuAl10Fe1 is widely used in open-pit mining machinery because of its high strength, wear resistance, and anti-galling performance.

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What is the equivalent grade of CW305G?

CW305G is the European designation for CuAl10Fe1 aluminum bronze alloy under EN standards.

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Structured Data Summary

Product Entity

Attribute	Value
Product Type	Centrifugal Cast Bronze Bushing
Material	CuAl10Fe1
Standard	EN 12163:2024
Alloy Family	Aluminum Bronze
Manufacturing Process	Centrifugal Casting
Main Applications	Mining Equipment Sliding Bearings
Features	Wear Resistance, High Load Capacity, Anti-Galling
Machining Type	Finished Machined Bushings
Industry	Mining Machinery
Maximum OD	800 mm