ISO 2795 pdf download

ISO 2795 pdf download Plain bearings — Sintered bushes — Dimensions and tolerances
1 Scope
This International Standard specifies the dimensions and tolerances applicable to sintered bearings for the following ranges of inside diameters:
— cylindrical bearings: 1 mm to 60 mm;
— flanged bearings: 1 mm to 60 mm;
— spherical bearings: 1 mm to 20 mm.
2 Normative reference
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5755, Sintered metal materials — Specifications
3 Material
The following materials used for manufacturing sintered bearings shall conform to ISO 5755.
4 Cylindrical bearings
4.1 Dimensions
See Figure 1 and Tables 1 and 2.
4.2 Tolerances
The tolerances for the bearings after fitting and the tolerances for the housing and insertion pin are given below. In addition, the tolerances for the inside and outside diameters of the bearing before fitting are given.
NOTE Since the actual tolerances and combinations of tolerances in the as-delivered state depend upon the characteristics of the materials and the manufacturing methods, they should be discussed with the manufacturer.
As-delivered:
— on outside diameter D: in the ranges
r6 to s7, for D ≤ 50 mm
r7 to s8, for D > 50 mm
— on inside diameter d: in the ranges
F7 to G7, for D ≤ 50 mm
F8 to G8, for D > 50 mm
— on bearing length L: js13
— on coaxiality of the outside diameter with respect to the inside surface diameter (tolerance based
on the outside diameter, D):
t 1 = IT9, for D ≤ 50 mm
t 2 = IT10, for D > 50 mm
Insertion pin: in the range m5 to m6
Housing: H7
Bearing bore after fitting (assuming the housing is rigid):
H7, for D ≤ 50 mm
H8, for D > 50 mm