Full complement cylindrical roller bearings, non-standard special bearings, without inner ring, rollers directly mate with journal, open and seal-free, single-row full roller structure, high load capacity, suitable for hydraulic pumps and gearbox applications. Model F-58787 Brand ZH Material Chrome Steel precision P0 P6 P5 P4 Product Description - Hydraulic pump spindle bearings (most commonly used) - Reducers, gearbox planetary gears - Hydraulic components for construction