Brake Drum Fabrication

Brake Drum Fabrication Specification

Bore
Central bore for axle mounting (approx. 20 mm diameter)

Head Code
Round

Connection
Axle mounting via central bore

Torque
Up to 3500 Nm (application dependent)

Max. Speed
Up to 5000 RPM (application dependent)

Material
Cast iron (grey iron or spheroidal graphite iron)

Structure
Single-piece cast structure

Standard
Conforms to ASTM A48 and SAE J431 (typical for brake drums)

Inner Diameter
Approx. 220 mm

Outer Diameter
Approx. 260 mm

Application
Automotive braking systems, industrial machinery brakes

Surface Treatment
Rough machined, unpainted/raw finish

Technique
Casting and precision machining

Shape
Cylindrical with circular flange inward

Corrosion Resistance
Moderate, can be enhanced with coatings

Operating Temperature Range
-40C to 400C

Balancing
Dynamically balanced

Color
Metallic grey with natural oxidation

Weight
8 - 14 kg (based on standard size drums)

Machinability
Good, suitable for further customizations

Wall Thickness
Approx. 20 mm

Hardness
180 - 230 HB (Brinell Hardness)

Life Expectancy
Typical lifespan 80,000 to 120,000 km (vehicle usage)

Brake Drum Fabrication About

A Brake Drum for Crane is a critical component used in the braking system of EOT cranes, hoists, and other lifting equipment. It works in combination with brake shoes or brake linings to generate the required friction for stopping, holding, and controlling the movement of loads. The brake drum ensures reliable and smooth braking performance during hoisting, cross-travel, and long-travel operations.

Brake drums are manufactured from high-grade cast iron or steel to provide excellent strength, wear resistance, and long service life even under heavy-duty crane applications.

Precision Engineering for Durability

Our brake drums are produced using advanced casting and precision machining techniques to ensure consistent quality and strength. Rigorous adherence to ASTM A48 and SAE J431 standards guarantees reliable performance in automotive and industrial braking systems. Each drum undergoes dynamic balancing to minimize vibrations and extend its operational life.

Optimized Performance Across Environments

With an operating temperature range of -40C to 400C and a hardness of 180-230 HB, our brake drums deliver dependable performance under various conditions. Their robust cast iron structure and moderate corrosion resistance-further enhanced by optional surface coatings-make them suitable for high-demand and custom application needs.

FAQ's of Brake Drum Fabrication:

Q: How is the brake drum fabricated and finished?

A: Brake drums are produced via casting of cast iron (grey iron or spheroidal graphite iron), followed by precision machining to achieve the specified dimensions, surface finish, and dynamic balance. They feature a rough-machined, unpainted, raw metallic grey surface with natural oxidation.

Q: What applications are these brake drums suitable for?

A: These drums are designed for use in automotive braking systems and industrial machinery brakes, offering versatility for manufacturers and system integrators.

Q: When should the brake drums be replaced in typical usage?

A: Under normal vehicle operation and proper maintenance, the brake drums should be replaced after covering between 80,000 and 120,000 km, based on their typical life expectancy.

Q: Where can these brake drums be mounted?

A: They are designed for mounting on axles via a central bore (approx. 20 mm diameter), suitable for standard automotive and industrial assemblies requiring cylindrical brake drums.

Q: What benefits does dynamic balancing provide for these drums?

A: Dynamic balancing ensures that the brake drums rotate smoothly at high speeds (up to 5000 RPM), reducing vibration, wear, and enhancing safety and component longevity.

Q: How can corrosion resistance be improved for these brake drums?

A: While the default corrosion resistance is moderate due to the natural oxidation of cast iron, additional surface treatments or coatings can be applied to further protect the drums in harsh environments.

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