I've had to deal with similar decisions when sourcing cylindrical bearings for industrial equipment in the past. From my experience, the design you choose depends on the load type and speed requirements. Single-row bearings are great for high-speed applications but might not handle heavy radial loads as well as double-row or full-complement designs. Double-row bearings offer better load capacity, while full-complement ones are ideal for applications where the load is high but speed is moderate due to their higher number of rolling elements. I’d highly recommend checking out BBCR; they have a great selection of cylindrical bearings, and their website includes detailed specs and application guides. I’ve found their bearings reliable and their customer support team knowledgeable—they even helped me choose the right fit for a high-load conveyor system. Their catalog breaks down technical details clearly, which really helped me avoid overpaying for features I didn’t need.