Cast Bronze Bushing, Straight

1 in stock

Cast bronze alloys have been used for centuries in a broad spectrum of bearing applications. Other bearing materials have been unable to match their versatility. Cast Bronze bearings are recommended for medium to heavy loads, impact, and temperatures. Made from U.S. Mill certified C93200 SAE 660 bearing bronze bar stock. This material is resistant to impact, wear, and corrosion, and has superb anti-friction properties. It also has excellent machinability, meaning a high-quality surface finish can be achieved.

Description

Cast bronze bushings are made from a solid or hollow bronze alloy bar stock that undergoes different processes to attain the final shape. This specific bronze alloy is created by continuous or centrifugal casting, which generates a metal with a fine grain structure and strong mechanical properties. The bronze alloy bar stock is then machined through a computer numerical control (CNC) lathe that cuts the cast bar, removes additional bar stock, and processes the finished bushing.

This combination of mechanical properties creates a tough durable bushing that will meet or exceed the fitment and service life of all other replacement style bushings available. Our C93200 SAE 660 Bar Stock is a continuous cast product. Continuous Cast Bronze offers a highly uniform, dense structure. Fast, controlled cooling during the continuous casting process produces a fine, uniform microstructure, increasing the physical strength of the material. This superior material yields a bushing with a longer more reliable service life.

Characteristics

  • Maintenance-free bearing material for heavy-duty applications
  • Excellent performance under high loads and intermittent operation
  • Also available with graphite inserts for temperatures above 250°C

What are Cast Bronze Bushings?

A bushing, also known as a plain bearing, is designed to reduce friction between two surfaces as they slide against one another. In machines and equipment with rotating or sliding shafts, bushings are used to enhance overall efficiency and longevity while reducing noise and vibration. They generally come in the following two styles:

Sleeve bushings. Sleeve bushings are cylindrical, featuring straight inside and outside diameters.
Flanged bushings. Flanged bushings feature a flange that extends radially outward from one end. The purpose of the flange is to act as a thrust face at one end of the bushing also preventing any axial movement.

As friction-reducing components, bushings must be constructed from wear-resistant materials that provide good sliding properties. While bushings can be fabricated from a variety of plastics and metals, bronze provides several distinct advantages over alternative options in heavy-load applications. As an inherently moldable and easy-to-machine material, bronze is well-suited for achieving a range of bushing designs.

The bronze alloy used in cast bronze bushings undergoes a continuous or centrifugal casting process, giving the metal a finer grain structure and improved mechanical properties. The bronze alloy cast bar is then cut and processed into the finished bushing using a computer numerical control (CNC) lathe or other precision machining method. Cast bronze bushings exhibit excellent structural strength, durability, and resistance to compressive forces, making them well-suited for harsh, high-wear applications. They can also withstand high temperatures without losing their strength.

Applications of cast bronze bushings include:

Heavy-duty equipment. The hardness and impact resistance of cast bronze bushings make them ideal for use in a range of construction, agricultural, and industrial equipment requiring high reliability in harsh environments.
Hydraulic machinery. With their heat resistance and exceptional mechanical properties, bronze cast bushings are perfect for supporting components in the cylinders and motors of hydraulic machinery.
Power transmission components. Cast bronze bushings help improve the efficiency and performance of critical components used in power transmission applications.
Aerospace systems. Cast bronze bushings help reduce weight and enhance the performance of mechanical moving parts in various aircraft systems.
Manufacturing tools and equipment. The bronze alloys used in cast bronze bushings give them the strength and wear resistance to support components in stamping dies, presses, and other tools and equipment used in the manufacturing industry.

Material CuZn25AI5Mn4Fe3 CuSn5Pb5Zn5 CuAI10Ni5Fe5 CuSn12 CuZn25AI5Mn4Fe3
Density 8 8.9 7.8 8.9 8
Hardness ≥210 ≥70 ≥150 ≥75 ≥235
Tensile strength ≥750 ≥250 ≥500 ≥270 ≥800
Yield strength ≥450 ≥90 ≥260 ≥150 ≥450
Elongation ≥12 ≥13 ≥10 ≥5 ≥8
Coefficient linear expansion 1.9×10-5/℃ 1.8×10-5/℃ 1.6×10-5/℃ 1.8×10-5/℃ 1.9×10-5/℃
Max. Temp. -40~+300℃ -40~+400℃ -40~+400℃ -40~+400℃ -40~+300℃
Max. dynamic load 100 60 50 70 120
Max. speed(Dry) 15 10 20 10 15
N/mm²*m/s(Lubrication) 200 60 60 80 200
Compression deformation < 0.01 mm < 0.05mm < 0.04mm < 0.05mm < 0.005mm

Cast bronze bearings and bars feature resistance to wear and corrosion, excellent machinability, high strength, and anti-friction properties. They are particularly suited for automotive applications, electric motors, machine tools, and other situations where superior performance is necessary. Viiplus features a comprehensive product catalog that includes tolerance and material specification charts for our products. We want to be your “1st Choice” vendor. Contact us with your questions, comments, or concerns. You can even email us your inquiry or purchase order.

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