1. Product Overview The 21309E spherical roller bearing is designed for heavy-load vibrating industrial equipment, featuring strong self-aligning capacity and dual-direction radial & axial load bearing performance. It is widely used in mining reducers, metallurgical machinery and conveying equipment where shaft deflection and impact vibration frequently occur. 👉 Get a quote within 24 hours for your project 2. Technical Specifications Model: 21309E Inner Diameter (ID): 45mm