Cylindrical Roller Radial Bearings - Four-Row Timken 820RX3264C

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 RX bearings are four-row construction, having two single flangedouter races and rib rings for roller spacing. This allowsfor complete disassembly for inspection. The RX style is usuallypreferred in bearings above 400 mm bore. Both brass and pin-type cages are available in this bearing style.Most inners are two-piece assemblies. Two outer rings with three rib rings. Two inner rings. Four pin-type steel cages. Lubrication grooves and holes on outer rings. Extended inner ring on one side. RX-10 – with oil-mist nozzles and O-rings in outer rings. Specifications Bore d 820 mm Static Load Rating Co 68400000 N Dynamic Load Rating C11 27400000 N Bearing Dimensions O.D. D 1130 mm Width B 825 mm Width C 800 mm DUR/DOR F/E 903 mm Type RX-8 Mounting Data Chamfer rsmin 7.5 mm Chamfer r1smin2 23 mm Angle of Chamfer r1smin 20 º Backing Shaft Diameter ds 882.5 mm Backing Housing Diameter Ds 1059 mm Lubrication Data Lubrication Groove g 36.0 mm Lubrication Hole Diameter h 20.0 mm Number of Lubrication Holes 16 Sub Assembly Part Numbers Inner-Ring Set 820ARXS3264C Outer-Ring Set 903RXS3264