Eccentric Shaft, Vibrating Screen
Adjusting Screw Thrust Block, Hot Strip Rollings Mill
Table Roller, Hot Strip Rolling Mill
Work Roll Chock Assembly, Steel Strip Rolling Mill
Backup Roll Chock Assembly, Cold Strip Rolling Mill
Work Roll Chock Assembly, Cold Strip Rolling Mill
Horizontal Roll Chock Assembly, Large-Size Universal Rolling Mill
Finishing Roll Chock Assembly, Wire Rolling Mill
Final Drive, Bulldozer
Axle Assembly, Dump Truck
Bent Axis Type Axial Piston Pump
Tapered Roller Bearing, Heavy Dusty Extruder
Axlebox Bearing, New Commuter Train
Traction Motor, Bullet Train (SHINKANSEN)
Flywheel and Clutch Assembly, Large-Size Press
Suction Roll, Paper Making Machine
Dryer Roll, Paper Making Machine (Free End)
Press Roll, Paper Making Machine (Free End)
Appendix Table 1 Conversion from SI (International Units) System
Appendix Table 2 N-kgf Force Conversion Table
Appendix Table 3 kg-lb Mass Conversion Table
Appendix Table 4 °C-°F Temperature Conversion Table
Appendix Table 5 Viscosity Conversion Table
Appendix Table 6 inch-mm Dimension Conversion Table
Appendix Table 7 Hardness Conversion Table
Appendix Table 8 Physical and Mechanical Properties of Materials
Appendix Table 9 Tolerances for Shaft Diameters
Appendix Table 10 Tolerances for Housing Bore Diameters
Appendix Table 11 Values of Standard Tolerance Grades IT
Appendix Table 12 Speed Factor fn
Appendix Table 13 Fatigue Life Factor fn and Fatigue Life L · Lh
Index of Inch Design Tapered Roller Bearings
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Roller Bearings NSK are bearing with cylindrical rollers that are small in diameter relative to their length. The ends of the rollers are relining slightly to modify the line contact between the rollers and raceways. Spite of their low cross section, needle roller bearings have a high load carrying capacity. Therefore, they are extremely suitable for bearing seats where radial space is limited.
In bearings of this type, the Roller Bearings NSK are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.
There are different types designated as NU, NJ, NUP, N, NF (for Bearing 25UMB10), NNU, and NN (for Bearing 25UMB10 depending on the design or absence of side ribs).
The outer and inner rings of all types are separable.
Some Roller Bearings NSK have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. Bearing 25UMB10 can be used as free-end bearings. Roller Bearings NSK, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Roller Bearings NSK have high radial rigidity and are used primarily for precision machine tools.
Pressed steel or machined brass cages are generally used, but sometimes molded polyamide cages are also used.
Depending on the existence of ribs on their rings, Roller Bearings NSK are classified into the following types:
Types NU, N, NNU, and NN are suitable as free-end Bearing 25UMB10. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end Bearing 25UMB10.
NH-type Roller Bearings NSK consist of the NJ-type Roller Bearings NSK and HJ-type L-shaped thrust collars.
The inner ring loose rib of an NUP-type Roller Bearings NSK should be mounted so that the marked side is on the outside.