ISO 18752-2014 pdf free.Rubber hoses and hose assemblies – Wire- or textile-reinforced single – pressure types for hydraulic applications – Specification.
ISO 18752 specifies requirements for ten classes, four grades and seven types of wire- or textile-reinforced hydraulic hoses and hose assemblies of nominal sizes ranging from 5 to 102. Each class has a single maximum working pressure for all sizes. Such hoses are suitable for use with hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from —40 °C to +100 °C for types AS, AC. BS and BC and -40°C to +120 °C for types CS, CC and DC.
This International Standard does not include requirements for the connection ends. It is limited to the performance of hoses and hose assemblies. The hose assembly maximum working pressure is governed by the lowest maximum working pressure of the components.
NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of the hose with the fluid to be used.
2 Normative references
The following referenced documents are indispensable for the application 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4671. Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test wit ho ut flexing
ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 7326:2006, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033:2006, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 8331. Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and maintenance
ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
ISO 10619-2:2011, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2: Bending tests at sub-ambient temperatures
ISO 17165-1, Hydraulic fluid power — Hose assemblies — Part 1: Dimensions and requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISo 8330 apply.
4 Classification
4.1 Classes
Ten classes of hose are specified, distinguished by their maximum working pressure, as shown in Table 1.
Each class may be manufactured in up to 14 nominal sizes.
4.2 Grades and types
Hoses are classified into four gradesaccording to their resistance to impulse: A, B, C and D. Each grade is classified by outside diameter into standard types (AS, BS and CS] and compact types (AC, BC, CC and DC, as shown in Table 2.ISO 18752 pdf free download.