Layered bronze bearings  Flanged Plain Bearing Series

A flanged plain bearing bronze bushing, or flange bushing, serves as a friction-reducing component in machines with rotating or sliding mechanisms. Crafted from bronze, this type of bushing boasts remarkable wear resistance, robust strength, and efficient thermal conductivity. The bushing’s flange, a protruding rim, enhances its capability to manage both radial and thrust loads effectively. This feature adds axial support, ensuring stability and preventing displacement under substantial loads.

Flanged bronze bushings come in various styles, including basic flange bushings, those with graphite inserts for lubrication, models featuring oil or grease grooves, and wrapped versions. One of their key attributes is self-lubrication, eliminating the necessity for frequent greasing or oiling. This quality, combined with their resilience against intense and continuous pressure, renders them ideal for demanding industrial applications characterized by low-speed but high-load conditions.

Available in both metric and imperial sizes, flange bushings are employed in diverse mechanisms, such as suspension and steering systems, and other types of rotating equipment. The production of these bushings typically involves the centrifugal casting technique, utilizing popular bronze alloys like C95400 Aluminum Bronze, C93200 Bearing Bronze, and C86300 Manganese Bronze.

The primary benefits of bronze flanged bushings include their high load-bearing capacity, superior wear resistance, and effective thermal conductivity. Their self-lubricating nature further contributes to reduced maintenance requirements and, consequently, lower overall costs, making them a cost-effective solution for a wide range of industrial applications.

Flange bearings identified by the SAE 430 classification pertain to a particular bronze alloy utilized in the creation of these bearings. SAE 430B, also recognized as C86300 manganese bronze, is a robust, non-heat treatable alloy recommended for applications involving low-speed movements and extreme loads. This alloy adheres to the continuous casting standards set by ASTM B505, boasting remarkable capabilities in load support, resistance to wear, and corrosion prevention.

For optimal functionality, SAE 430B bronze requires operations under low speeds with heavy loads, alongside a necessity for high shaft hardness and conditions that are nonabrasive. The standard chemical composition of SAE 430B (C93200) typically encompasses about 81-85% copper, 6.3-7.5% tin, and 6.0-8.0% lead. This blend ensures the alloy’s considerable hardness and strength, rendering it apt for a variety of challenging environments, including those with heavy burdens and harsh operational conditions.

Bearings crafted from SAE 430B are inherently self-lubricating, often incorporating grooves or channels to facilitate lubricant distribution, thereby augmenting their resistance to wear and their capacity to bear loads. These bearings find extensive applications across industries in need of resilient components that can endure significant wear and load.

In essence, flange bearings fabricated from SAE 430B material stand out as durable solutions engineered for rigorous use, where superior load-bearing abilities and resistance against wear and corrosion are critical.