Page 172 - SKF-bearing-housings
P. 172

Split plummer block housings SNLN 30 series

             Design considerations               Abutment rings and spacer sleeves are not
                                                 supplied by SKF.
             For general information about system design,
             refer to the following sections:    Stepped shaft with bearing on a withdrawal sleeve
                                                 When using an SNLN 30 housing for this
             •  Typical shaft-bearing combinations   arrangement, the withdrawal sleeve must be
               († page 41)                       located axially on the shaft. This can be done
             •  Locating/non-locating bearing arrangements   using a spacer sleeve that is held in place by
               († page 40)                       another component. Using a lock nut can be
             •  Load carrying capacity († page 44)  difficult because of the limited space in the
             •  Axial load carrying capacity for bearings on   housing. The outside diameter of the spacer
               sleeves († page 44)               sleeve must be the same as the shaft abut-
             •  Specifications for shafts and housing support   ment diameter, d b , († product tables) and it
               surfaces († page 45)              should be in accordance with the h9V E  toler-
                                                 ance class to fit the seal. The spacer sleeve is
             For additional information about rolling bear-  not supplied by SKF.
             ings, refer to the product information available
             online at skf.com/housings.
                                                 Locating and non-locating bearing
                                                 positions
             Typical shaft-bearing combinations  SNLN 30 housings can be used for both the
             SNLN 30 housings can accommodate different   locating and non-locating bearing positions.
             shaft-bearing combinations († fig. 10):  The housings are machined standard for
                                                 bearings in the non-locating position. Bear-
             •  Plain shaft with bearing on an adapter sleeve  ings in the locating position as well as CARB
             •  Stepped shaft with bearing on a cylindrical   toroidal roller bearings must be secured in
               seat                              the housing on both sides with locating rings.
             •  Stepped shaft with bearing on an adapter   Appropriate locating rings are listed in the
               sleeve                            product tables.
             •  Stepped shaft with bearing on a withdrawal
               sleeve
             Plain shaft with bearing on an adapter sleeve
             Housings, appropriate parts and dimensions
             are listed in product table 4.1, starting on
             page 180.
             Stepped shaft with bearing on a cylindrical seat
             Housings, appropriate parts and dimensions
             are listed in product table 4.2, starting on
             page 184.
               The bearing is located axially between a
             shaft shoulder and a spacer sleeve, which is
             held in place by another component on the
             shaft. The outside diameter of the sleeve
             must match the bore diameter of the seal.
             The spacer sleeve is not supplied by SKF.
             Stepped shaft with bearing on an adapter sleeve
             When using an SNLN 30 housing for this
             arrangement, the dimensions of the abutment
             ring and the spacer sleeve must fit the housing.


             168
   167   168   169   170   171   172   173   174   175   176   177