GB/T 28279.1-2012 English PDFUS$574.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 28279.1-2012: Plain bearing -- Hydrostatic plain journal bearings with drainage grooves under steady-state conditions -- Part 1: Calculation of oil-lubricated plain journal bearings with drainage grooves Status: Valid
Basic dataStandard ID: GB/T 28279.1-2012 (GB/T28279.1-2012)Description (Translated English): Plain bearing -- Hydrostatic plain journal bearings with drainage grooves under steady-state conditions -- Part 1: Calculation of oil-lubricated plain journal bearings with drainage grooves Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J12 Classification of International Standard: 21.100.10 Word Count Estimation: 29,291 Quoted Standard: GB/T 28279.2-2012; ISO 3448-1992 Adopted Standard: ISO 12167-1-2001, IDT Regulation (derived from): National Standards Bulletin 2012 No. 9 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the steady-state conditions hydrostatic radial sliding bearings. This section only for the oil chamber between the back sump lubrication. And non- hydrostatic tank back radial sliding bearings compared to the same stiffness case ba GB/T 28279.1-2012: Plain bearing -- Hydrostatic plain journal bearings with drainage grooves under steady-state conditions -- Part 1: Calculation of oil-lubricated plain journal bearings with drainage grooves---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Plain bearing Hydrostatic plain journal bearings with drainage grooves under steady-state conditions Part 1. Calculation of oil-lubricated plain journal bearings with drainage grooves ICS 21.100.10 J12 National Standards of People's Republic of China Back to the sump hydrostatic sliding bearings steady-state conditions Pressure radial sliding bearings - Part 1. back to the oil sump Lubricated radial sliding bearings Calculation understeady-stateconditions-Part 1. Calculationofoil-lubricatedplain (ISO 12167-1.2001, IDT) Issued on. 2012-05-11 2012-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordGB/T 28279 "back to plain bearings under steady-state conditions sump hydrostatic radial sliding bearings" consists of two parts. --- Part 1. back to the sump oil lubrication Radial calculate sliding bearings; --- Part 2. back to the sump oil lubrication radial sliding bearings calculated property values. This part of GB/T 28279 Part 1. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method identical with the international standard ISO 12167-1.2001 under the path back to the sump static "bearing steady-state conditions To plain bearings - Part 1. back to the sump oil lubrication Radial sliding bearing calculation. " Consistency correspondence between this part of international documents and normative references of our files are as follows. --- GB/T 3141-1994 industrial liquid lubricants ISO viscosity classification (eqv ISO 3448.1992). This part is proposed by China Machinery Industry Federation. Bearing this in part by the National Standardization Technical Committee (SAC/TC236) centralized. This section is responsible for drafting unit. Productivity Promotion Center in the machine. Participated in the drafting of this section. Xi'an Jiaotong University, Tymoshenko sliding bearing Co., Ltd., Shanghai, Zhejiang send Bearing Co., Ltd., Zhejiang Oriental Bearing Co., Ltd., Dongfang Turbine Co., Ltd., Dongfang Electrical Machinery Co., Ltd., Oriental Bearing Co., Ltd. Lin'an.IntroductionWorks hydrostatic bearing is lubricated by the supporting force is generated by an external lubricating oil pressure. Prominent feature hydrostatic lubrication is wear A small amount of noise, wide operating speed range as well as high stiffness and high impedance. These properties determine the static pressure journal bearing, in many cases, e.g. The special importance of machine tool applications. GB /basic calculations in this section T 28279 may be applied to a different number of oil chamber, oil chamber geometry similar width to diameter ratio of different hydrostatic Bearings. Lubricating oil supplied by the constant pressure pump (pen = system pressure constant) via the pre-restrictor, such as a capillary restriction lubricating oil into each cavity. GB/T he rear part of the calculation procedures listed T 28279 can be used to calculate and evaluate a given design parameters of hydrostatic bearings can also be In static variable parameters for the design part of the bearing. In addition, this section GB/T 28279 also contains the required lubrication system design, Including the calculation of restrictor parameters. Back to the sump hydrostatic sliding bearings steady-state conditions Pressure radial sliding bearings - Part 1. back to the oil sump Lubricated radial sliding bearings Calculation1 ScopeOil lubrication hydrostatic radial part of the GB/T 28279 for sump back sliding bearing calculations. This section applies to a hydrostatic radial bearing under steady-state conditions. This section is only between the oil chamber back to the oil sump lubrication. Compared with no back to the sump of the hydrostatic radial sliding bearings, in phase Stiffness under the same circumstances, back sump lubrication pump requires more power.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 28279.2-2012 Plain bearings back under steady-state conditions sump the hydrostatic radial bearings - Part 2. back Sump oil lubrication Radial Bearing calculated using characteristic values \u200b\u200b(ISO 12167-2.2001, IDT). ISO 3448.1992 Industrial liquid lubricants ISO viscosity classification (Industrialliquidlubricants-ISO viscosityclas- sification) The basic principle and boundary conditions calculated 3 Etc. This part of the purpose of the calculation is to determine the precise bearing hydrostatic bearing operating parameters and operating conditions, the geometry and lubricants Functional relationship. That is determined bearing eccentricity, bearing capacity, oil film rigidity, oil pressure, oil flow, friction power, pump power and Many parameters temperature rise. In addition to considering the hydrostatic bearing, the hydrodynamic bearing effect also made approximations. Reynolds equation for the hydrostatic bearing calculation provides a theoretical basis. However, in most practical applications, it can be approximated by In order to achieve the desired accuracy. Approximation method used in this section are two integral equations to describe the state of the lubricating oil flowing through the bearing and journal surface of the gap. Both integral equation can be derived from the Reynolds equation using specific boundary conditions. Hagen - Park Bernoulli equation describes the parallel surface gap Pressure flow, Kurt formula described by the rotation of the journal bearing gap generated shear flow. Appendix A contains a calculation and theoretical Based on a detailed description. Calculation process described in this section is used in the following key assumptions. a) the lubricant flow is laminar. b) lubricants fully adhered to the surface to be lubricated. c) lubricating oil is incompressible Newtonian fluid. d) throughout the lubrication gap and pre-restrictor lubricating oil viscosity, etc. are. e) completely filled with lubricant in the lubrication gap. f) film thickness direction of the pressure gradient is zero. g) journal and the pad surface constituting the lubricating gap is rigid. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 28279.1-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 28279.1-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 28279.1-2012_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 28279.1-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. |
