1. Product Overview The 51209 single direction thrust ball bearing is designed for vertical rotary equipment, which can withstand large one-way pure axial loads and provide stable axial support. It is widely used in lifting machines and vertical spindles requiring strong axial bearing capacity. 👉 Get a quote within 24 hours for your project 2. Technical Specifications Model 51209 Inner Diameter (ID) 45 mm Outer Diameter (OD) 73 mm Width 20 mm Structure Single direction thrust