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JB/T 8727-2004 (JB/T 8727-2017 Newer Version) PDF English


Search result: JB/T 8727-2004 (JB/T 8727-2017 Newer Version)
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
JB/T 8727-2017English919 Add to Cart 6 days Hydraulic hose assemblies Valid
JB/T 8727-2004English160 Add to Cart 0-9 seconds. Auto-delivery. Hydraulic fluid power - Hose assemblies Obsolete
JB/T 8727-1998English519 Add to Cart 4 days Hydraulic fluid power-Hose assemblies Obsolete
BUY with any currencies (Euro, JPY, GBP, KRW etc.): JB/T 8727-2004     Newer/related standards: JB/T 8727-2017

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JB/T 8727-2004: PDF in English (JBT 8727-2004)

JB/T 8727-2004 JB MACHINERY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.100.30 J 20 Replacing JB/T 8727-1998, JB/T 8885-1999 Hydraulic fluid power – Hose assemblies 液压软管 总成 ISSUED ON. OCTOBER 20, 2014 IMPLEMENTED ON. APRIL 01, 2005 Issued by. National Development and Reform Commission of the PRC Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions ... 6  4 Product classification ... 7  5 Usability ... 12  6 Technical conditions ... 14  7 Test items and test methods ... 16  8 Inspection items and inspection methods of assembly and appearance ... 17  9 Inspection rules ... 17  10 Marking, packaging, transportation, and storage ... 20  11 Annotation notes (reference this Standard) ... 20  Annex A... 21  Annex B... 22  Annex C... 23  Foreword This Standard is a revision of JB/T 8727-1998 Hydraulic Fluid Power – Hose Assemblies. During the revision, the contents of JB/T 8885-1999 Technical Conditions for Hose Assemblies of Hydraulic Fluid Power has been integrated into this Standard. Compared with the previous edition, this Standard has the following changes. - ADJUST S16, S18, S21, and S 24 in Table 1 of original JB/T 8727 standard into S14, S17, S19, and S22 respectively; ADJUST S16, S18, S21, S24, and S41 in Table 3 into S14, S17, S19, S22, and S36 respectively. ADJUST the L dimension in Figure 1 ~ 3 of the original standard. - Compared with the original JB/T 8885 standard, this Standard proposes the tolerance requirements for the hose assemblies’ flexural core. - ADJUST the tensile strength of the connector materials of the hose assemblies to meet the requirements of swaging assembly and reliability of the hose assemblies. ADJUST the low-temperature bending test item in the Test Items and Test Methods into “Test can be conducted as required by the users, otherwise, there is no need to conduct the test”. - The newly-added flange hose assemblies and 24° cone sealing hose assemblies adopt the connector type specified in international standard ISO 6162.1994 and ISO 8434.4.1995. - Annex A of this Standard specifies the size of mandrel or steel ball of the steel wire braided hose and steel wire wound hose respectively. This Standard replaces and abolishes JB/T 8727-1998 and JB/T 8885-1999. Annex A, Annex B, and Annex C of this Standard are normative. This Standard was proposed by China Machinery Industry Federation. This Standard shall be under the jurisdiction of the National Technical Committee for Standardization of Hydraulics & Pneumatics (SAC/TC3). Main drafting organizations of this Standard. Tianjin Research Institute of Construction Machinery, Ningbo Yonghua Hydraulic Equipment Co., Ltd., and Ansteel Hydraulic Accessory Factory. Main drafters of this Standard. Feng Guoxun, Zhou Shunhua, and Liu Xiaoping. The previous editions replaced by this Standard are as follows. - JB/T 8727-1998; Hydraulic fluid power – Hose assemblies 1 Scope This Standard specifies the product classification, basic parameters, connection dimension, usability, technical conditions, test methods, inspection rules, marking, packaging, storage, transportation, etc. of flared (nominal inner-diameter of 5mm~31.5mm), ferrule (nominal inner-diameter of 5mm~38mm), welding (or quick-change, nominal inner-diameter of 5mm~51mm), flange, and 24° cone sealing steel wire reinforced hydraulic rubber hose assemblies (hereinafter referred to as “steel-wire-braided hydraulic hose assemblies”) and steel-wire-wound reinforced hydraulic rubber hose assemblies (hereinafter referred to as “steel-wire-wound hydraulic hose assemblies”). This Standard applies to the steel-wire-braided hydraulic hose assemblies (working temperature range of -40°C ~ +100°C), Type 1 ~ 5 steel-wire-wound hydraulic hose assemblies (working temperature range of -40°C ~ +100°C), and Type 6 steel-wire-wound hydraulic hose assemblies (working temperature range of -10°C ~ +121°C) with hydraulic oil (fluid) as the working medium. 2 Normative references The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 3 Run-outs, undercuts and chamfers for general purpose metric screw threads (GB/T 3-1997, eqv ISO 3508.1976, ISO 4755.1983) GB/T 196 General purpose metric screw threads - Basic dimensions GB/T 197 General purpose metric screw threads - Tolerances GB/T 699 Quality carbon structural steels GB/T 1184-1996 Geometrical tolerancing - Geometrical tolerances for features without individual tolerance indications (eqv ISO 2768-2.1989) GB/T 1804-2000 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications (eqv ISO 2768-1.1989) GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 3103.1 Tolerances for fasteners - Bolts, screws, studs and nuts (GB/T 3103.1-2002, ISO 4759-1.2000, IDT) GB/T 3683 Rubber hoses and hose assemblies - Wire-braid-reinforced hydraulic types for oil-based or water-based fluids - Specification GB/T 7935 Hydraulic fluid power - General requirements for hydraulic components GB/T 7939 Hydraulic fluid power - Hose assemblies - Test methods (GB/T 7939-1987, neq ISO 6605.1986) GB/T 9576 Rubber and plastics hoses and hose assemblies - Guide to selection, storage, use and maintenance (GB/T 9576-2001, idt ISO 8331.1991) GB/T 9577 Rubber and plastics hoses and hose assemblies - Rules for marking, package and transportation GB/T 10544 Rubber hoses and hose assemblies - Rubber-covered, spiral wire reinforced, hydraulic type GB/T 17446 Fluid power systems and components - Vocabulary JB/T 7858 Method to determine cleanliness and acceptance criterions for hydraulic components ISO 6162.1994 Hydraulic fluid power - Four-screw split-flange connections for use at pressures of 2.5 MPa to 40 MPa (25 bar to 400 bar) - Type I metric series and type II inch series ISO 8434-4.1995 Metallic tube connections for fluid power and general use - Part 4. 24 degree cone connectors with O-ring weld-on nipples 3 Terms and definitions The following terms and definitions AND those defined in GB/T 17446 apply to this Standard. 3.1 Maximum working pressure The maximum working pressure of the hydraulic hose assemblies that ensures the system’s normal operation under specified operational conditions. 3.2 Change length The amount of axial length change of the hydraulic hose assemblies under the 10 7.5 12 16.0 28.0 31.0 38.0 51.5 69.0 27.6 M18×l. 5 2.5 22 12.5 10 15 14.0 25.0 27.5 34.5 43.0 51.5 55.0 27.6 M22×l. 5 2.5 27 16 13 18 10.5 20.0 22.5 27.5 38.0 48.0 — — M27×l. 5 2.5 32 19 15 22 9.0 16.0 20.5 34.5 34.5 43.0 42.0 27.6 M30×2 4 36 25 21 28 7.0 14.0 20.5 27.5 27.5 34.5 38.0 27.6 M36×2 4 41 31.5 27.0 35 4.4 11.0 17.0 — 20.5 24.0 32.5 20.7 M45×2 4 50 38 33 42 3.5 9.0 14.0 — 17.0 20.5 29.0 17.2 M52×2 4 60 Table 5 Basic parameters and connection dimension of 24° cone sealing hydraulic hose assemblies (continued) Serie Hose inner-di ameter mm d0 (referen ce) mm d1 (referen ce) mm Max working pressure of steel-wire-braided hose assemblies MPa Max working pressure of steel-wire-wound hose assemblies MPa D0 (refere nce) mm mm Type-1 Type-1 Type-2, 2T, Type-3, 3T Type-1 Type-2 Type-3 Type-4 Type-5 Type-6 Heav Type 5 3.5 6 21.0 35.0 — — 69.0 86.0 — — M14×1.5 1.5 17 6.3 4 8 20.0 35.0 — 42.0 60.5 77.5 — — M16×1.5 1.5 19 10 M18×1.5 2 22 8 6.0 12.0 17.5 32.0 36.0 — 56.0 71.5 — — M20×1.5 2.5 24 10 7.5 14.0 16.0 28.0 31.0 38.0 51.5 69.0 — 27.6 M22×1.5 2.5 27 12.5 10.0 16.0 14.0 25.0 27.5 34.5 43.0 51.5 55.0 27.6 M24×1.5 3 30 16 13.0 20.0 10.5 20.0 22.5 27.5 38.0 48.0 — — M30×2 3 36 19 15.0 25.0 9.0 16.0 20.5 34.5 34.5 43.0 42.0 27.6 M36×2 3 46 25 21.0 30.0 7.0 14.0 20.5 27.5 27.5 34.5 38.0 27.6 M42×2 4 50 31.5 27.0 38.0 4.4 11.0 17.0 — 20.5 24.0 32.5 20.7 M52×2 4.5 60 5 Usability 5.1 Length changes The length change of the hydraulic hose assemblies under the maximum working pressure is ... ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.