BS ISO 4379:2018 pdf free
BS ISO 4379:2018 pdf free.Plain bearings – Copper alloy bushes.
This document specifies dimensions and tolerances for cylindrical and flanged bushes with internal diameter, d1, in the range 6 mm to 200 mm.
It applies to solid mono-metal copper alloy bushes to be used as plain bearings with and without oil holes and oil grooves.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1302. Geometrical Product Specifications (GPS) — Indication of surface texture in technical product documentation
ISO 27681. General tolerances — Part 1: Tolerances for linear and angular dimensions without individual tolerance indications
ISO 4382-1, Plain bearings — Copper alloys — Part 1: Cast copper alloys for solid and multilayer thick- walled plain bearings
ISO 4382-2, Plain bearings — Copper alloys — Part 2: Wrought capper alloys for solid plain bearings
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://wwwiso.org/obp
— IEC Electropedia: available at http://www.clectropediorgJ
4 Dimensions and tolerances
Dimensions shall be as shown and given in Figure]. and in Tabic]. and Tablel.
Tolerances shall be as given in Table 3.
Tolerance classes which deviate from those given in this document shall in each case be added in the designation to the nominal size.
5 Material
Cast copper alloys shall be in accordance with ISO 4382-1.
Wrought copper alloys shall be in accordance with ISO 4382-2.
7 Construction
Permissible deviations for dimensions without tolerance indication shall be in accordance with tolerance class m as specified in ISO 2768-1.
For outside chamfer c2 of 450, no special designation details are required.
For outside chamfer c2 of 15°, Y shall be additionally specified in the designation.
Other chamfers shall be agreed between the manufacturer and customer.
Flange bushes type F with or without undercut (dimension u) shall be agreed between the manuracturer and customer.
The tolerance classes recommended in this document are applicable to any normal applications in general machinery construction. The fits recommended in this document should be checked in the case of bushes used in the area of hydrodynamic lubrication, or pressed or bonded in housings which are unusual as regards both material and design.
8 Quality assurance
For quality control techniques and inspection of the geometrical and material quality characteristics. see ISO 12301.BS ISO 4379 pdf download.
