The Timken Tapered Roller Bearings model 09074 and 15250 are made of steel and are designed for use in various industrial applications. These bearings are manufactured by Timken, a well-known brand in the industry, known for their high-quality and durable products. Tapered roller bearings are commonly used in mechanical power transmission systems to support and guide rotating shafts and axles, providing smooth and efficient operation. The Timken 09074 and 15250 bearings offer reliable performance and precision, making them a popular choice for businesses in need of dependable industrial automation and motion control components.