Высокоточный двухрядный цилиндрический роликоподшипник NSK NNU4948MBE44CC1P4Y

Описание

Boundary Dimensions NNU: Outer ring rib type Bearing Type d 240 mm Bore diameter D 320 mm Outside diameter B 80 mm Width r(min.) 2.1 mm Chamfer Dimension Basic Load Ratings C r 720 kN Basic Dynamic Load Rating C 0r 1450 kN Basic Static Load Rating Speeds Grease 2400 min -1 Limiting Speed Oil (Oil-air) 2900 min -1 Limiting Speed Dimensions Ew 263 mm Roller Circumscribed Circle Diameters s 3.3 mm Axial Displacement Abutment and Fillet Dimensions da(min.) 251 mm Diameter of Shaft Abutment d1a(min.) 254 mm Diameter of Shaft Abutment Da(max.) 309 mm Diameter of Housing Abutment ra(max.) 2 mm Radius of Shaft or Housing Fillet Additional information CC1(max.) 50 μm Clearance in Bearings with Cylindrical Bores CC1(min.) 15 μm Clearance in Bearings with Cylindrical Bores 52 g/brg Recommended Grease Quantities Holes Dimensions dh 5 mm Hole Diameter W 9 mm Oil Groove Width m 4 Number of Holes Mass 16.2 kg Mass(approx.)