Cylindrical Roller Radial Bearings - Four-Row Timken 280RYL1782

Описание

Timken’s four-row cylindrical roller bearings are designed for the rigors of daily use in applications where moderate and high speeds, high radial loads, elevated temperatures and debris are constant challenges. Designed with well-balanced cross sections, these bearings provide high-radial-load capacity within the bearing envelope. The radial internal clearance (RIC) for the bearing assembly must be included when ordering either a) the complete assembly or b) with the inner-ring set. It is advisable to order the inner-ring set independent of the outer ring set when the final grind of the inner-ring O.D. is accomplished after mounting on the roll neck. The RY bearing style incorporates two outer races with tripleflanges (solid ribs). The inner race is usually single-piececonstruction. The outer assemblies consist of the outer race,rollers and cages, which create a unitized construction. Handlingis made simple by this design. A loading slot is used for rollerinsertion. Lubrication is generally accomplished via slots in thefaces of the outer ring. The cage is single-piece, fully machined brassor steel material. The roller pockets are staggered betweenthe races. Two outer rings with integral ribs. Two inner rings. RY-2 – with lubrication grooves and holes on outer rings. RY-3 – without lubrication grooves and holes on outer rings. Two solid-steel or brass cages. Specifications Bore d 280 mm Static Load Rating Co 7020000 N Dynamic Load Rating C11 3049000 N Bearing Dimensions O.D. D 390 mm Width B 275 mm Width C 275 mm DUR/DOR F/E 308 mm Type RY-3 Mounting Data Chamfer rsmin 2.5 mm Chamfer r1smin2 3.5 mm Angle of Chamfer r1smin 0 º Backing Shaft Diameter ds 301.8 mm Backing Housing Diameter Ds 364 mm Lubrication Data Lubrication Groove g 0 mm Lubrication Hole Diameter h 0 mm Number of Lubrication Holes 0 Sub Assembly Part Numbers Inner-Ring Set 280ARYSL1782 Outer-Ring Set 308RYSL1782