Page 172 - SKF-bearing-housings

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.

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