BS ISO 3228:2013 pdf download – Rolling bearings — Cast and pressed housings for insert bearings — Boundary dimensions and tolerances
1 Scope
This InternationalStandard specifies boundary dimensions and tolerances for castand pressed housingsfor insert bearings for which boundary dimensions are given in lS0 9628[1].
lt applies to plummer block housings, flanged housings and take-up housings.
The inclusion of relubrication features is optional, but when provided it is intended that they intersect thezone specified in ISO 9628[1]in such a way that lubricant satisfactorily feeds from the housing through thiszone.The exact design of the relubrication features is not otherwise covered by this International Standard.
2Normative references
The following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application.For dated references,only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies.
ISO 5593,Rolling bearings – Vocabulary
ISO 15241, Rolling bearings — Symbols for quantities
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5593 apply.
4 Symbols
4.1 General
For the purposes of this document, the symbols given in ISO 15241 and those in 4.2 to 4.7 apply.
The symbols (except those for tolerances) shown in Figures 1 to 6, and the values given in Tables 1 to 10denote nominal dimensions, unless specified otherwise.
NOTE Figures 1 to 6 are drawn schematically and do not necessarily show all design details. The greasenipple positions in Figures 1 to 4are examples.Other positions are at the discretion of the manufacturer.
4.2 Cast plummer block housing
See Figure 1 and Tables 1 and 2.
A (overall) width of base
D a spherical seating diameter of housing
H distance from mounting base to centreline of spherical seating diameter
H 1 height of feet
J centre distance between bolt holes
L (overall) length of base
N width of bolt hole
N 1 length of bolt hole
Δ Hs deviation of single distance from mounting base to centreline of spherical seating diameter
4.3 Cast flanged housing, square
See Figure 2 and Tables 3 and 4.
A (overall) width
A 1 width of flange
A 2 distance from mounting face to centreline of spherical seating diameter
D a spherical seating diameter of housing
J centre distance between bolt holes
L (overall) length
N diameter of bolt hole
X position tolerance of bolt holes
Δ A2s deviation of single distance from mounting face to centreline of spherical seating diameter
4.4 Cast flanged housing, oval
See Figure 3 and Tables 5 and 6.
A (overall) width
A 1 width of flange
A 2 distance from mounting face to centreline of spherical seating diameter
D a spherical seating diameter of housing
H height of flange
J centre distance between bolt holes
L (overall) length
N diameter of bolt hole
X position tolerance of bolt holes
Δ A2s deviation of single distance from mounting face to centreline of spherical seating diameter
4.5 Cast take-up housing
See Figure 4 and Tables 7 and 8.
A (overall) width (attachment end)
A 1 width of location slot
A 2 width of flange in which location slot is provided
D a spherical seating diameter of housing
H (overall) height
H 1 distance between bottoms of location slots
H 2 height (attachment end)
L (overall) length
L 1 distance from attachment end face to centreline of spherical seating diameter
L 2 length (attachment end)
L 3 length of location slot
N diameter of attachment hole
N 1 length of attachment slot
N 2 height of attachment slot
Δ H1s deviation of single distance between bottoms of location slots
4.6 Pressed plummer block housing
See Figure 5 and Table 9.
A (overall) width of base
D a spherical seating diameter of housing
H distance from mounting base to centreline of spherical seating diameter
H 1 height of feet
J centre distance between bolt holes
L (overall) length of base
N diameter of bolt hole
Δ Js deviation of single centre distance between bolt holes
Δ Ns deviation of single diameter of bolt hole