1. Solid, thickened outer ring with cage-guided needle rollers; not fully fitted, ensuring smooth operation and suitable for medium-speed, heavy-load applications. 2. Very thin radial cross-section, strong radial load capacity; can only withstand radial loads, not axial forces. Model F-86677 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description Loader gearboxes, construction machinery gearboxes, and also used in some printing equipment and hydraulic units,