Page 203 - needle bearings
P. 203

Complex bearings
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                 Bearing components          Handling characteristic                 Features

         Inscribed circle diameter
         (shaft dia.)  : П20
         Radial bearing  : Needle roller type
                         Iron cage                  ˚              Can be applied to high speed running under light axial load,
         Thrust bearing  : Ball type         Separable thrust plate   due to use of ball type thrust bearing.
                         Resin cage         Without dust-proof cover
         Dust-proof cover  : without
         Thrust plate  : Separable
         Inscribed circle diameter
          (shaft dia.)  : П20
         Radial bearing  : Needle roller type                      This type is identical to NKZ, but its thrust bearing is
                          Iron cage                 ˓              provided with dust-proof cover to prevent grease scattering.
         Thrust bearing  : Ball type          Integral thrust plate   Furthermore, the handling characteristic is good because
                          Resin cage
         Dust-proof cover  : with             With dust-proof cover  the dust-proof cover makes the thrust plate non-separable
         Thrust plate   : Non-separable,                           integral.
                          integral type
         Inscribed circle diameter
          (shaft dia.)  : П20
         Radial bearing  : Needle roller type       ˚
                          Iron cage                                Due to the use of needle roller bearing as its thrust bearing,
         Thrust bearing  : Ball type         Separable thrust plate   this type can support greater axial load than NKX.
                          Resin cage        Without dust-proof cover
         Dust-proof cover  : without
         Thrust plate   : Separable
         Inscribed circle diameter
          (shaft dia.)  : П20                                      This type is identical to NKXR, but its thrust bearing is
         Radial bearing  : Needle roller type
                          Iron cage                 ˓              provided with dust-proof cover to prevent grease scattering.
         Thrust bearing  : Ball type          Integral thrust plate   Furthermore, the handling characteristic is good because
                          Resin cage          With dust-proof cover  the dust-proof cover makes the thrust plate non-separable
         Dust-proof cover  : with                                  and integral.
         Thrust plate   : Non-separable,
                          integral type

         Inscribed circle diameter                                 This type is composed of needle roller bearing and angular
          (shaft dia.)  : П20                       ˕              bearing which were integrated into one unit. The angular
         Radial bearing  : Needle roller type   Integral angular bearing   bearing supports axial load. Hence, this type can support
         Thrust bearing  : Angular type       Inner ring separable  one-way axial load only. Best-suited to high speed and light
                                                                   load application.


         Inscribed circle diameter
          (shaft dia.)  : П20                                      This type is composed of needle roller bearing and
                                                    ˓
         Radial bearing  : Needle roller type                      three-point contact angular bearing which were integrated
                                             Double inner ring type
                          Outer ring with rib                      into one unit. Unlike KN1A, this type can support
                                              Inner ring separable
         Thrust bearing  : Three-point contact                     bi-directional axial load.
                                    angular type
         Inscribed circle diameter
                                                                   This type is a special-purposed bearing to support a
          (shaft dia.)   : П20
                                                                   precision ball screw.  This type uses the side face of the
         Outer ring outer diameter : 52             ˚
                                                                   radial bearing as the raceway surface of thrust bearing.
         Radial bearing  : Needle roller type     Separable
                                                                   This can support axial load from both directions.
         Thrust bearing  : Needle roller type
         Inscribed circle diameter
                                                                   This type is a special-purposed bearing to support a
          (shaft dia.)   : П20
         Outer ring outer diameter : 62             ˚              precision ball screw. This can support bi-directional axial
         Radial bearing  : Needle roller type     Separable        load. This type is identical to AXN, but its axial load capacity
                                                                   is greater.
         Thrust bearing  : Cylindrical roller type


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