GB/T 38068-2019 English PDF

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GB/T 38068-2019: Heavy duty plain bearing for marine high speed diesel engine
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38068-2019	279	Add to Cart	3 days	Heavy duty plain bearing for marine high speed diesel engine	Valid

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Basic data

Standard ID: GB/T 38068-2019 (GB/T38068-2019)
Description (Translated English): Heavy duty plain bearing for marine high speed diesel engine
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U44
Classification of International Standard: 47.020.20
Word Count Estimation: 14,134
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38068-2019: Heavy duty plain bearing for marine high speed diesel engine

---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.
Heavy duty plain bearing for marine high speed diesel engine ICS 47.020.20 U44 National Standards of People's Republic of China Heavy duty sliding bearing for marine high speed diesel engine Published on.2019-10-18 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Marine Machinery Standardization Technical Committee (SAC/TC137). This standard was drafted. China Shipbuilding Industry Comprehensive Technology and Economic Research Institute, Shanghai Jiaotong University, Chongqing Yuejin Machinery Factory Co., Ltd., smoke Tai Dafeng Bearing Co., Ltd., Weichai Heavy Machinery Co., Ltd., National Ship Armored Product Quality Supervision and Inspection Center, Beibu Gulf University. The main drafters of this standard. Sun Meng, Li Hulin, Zhong Ning, Wang Hairong, Mu Yipu, Li Cunjun, Yin Zhongwei, Yin Xiaoqing, Sun Ridong, Wu Bo, Wang Jiyong, Xia Yijiang. Heavy duty sliding bearing for marine high speed diesel engine

1 Scope

This standard specifies the classification and marking, requirements, test methods, inspection rules, signs, packaging, and heavy-duty sliding bearings for marine high-speed diesel engines. Transportation and storage. This standard is applicable to the splitting capacity of marine high-speed diesel engines with rated speed not less than 1400r/min not less than 50MPa. Design, manufacture and inspection of heavy duty plain bearings (hereinafter referred to as bearings).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 699-2015 high quality carbon structural steel GB/T 18326-2001 Metallic multilayer material for sliding bearing thin-walled sliding bearings JB/T 9749.1-2015 Internal combustion engine bearing bushings Part 1. Metallographic examination of cast copper-lead alloy bearing bushes

3 classification and marking

3.1 Classification Bearings can be divided into. composite process of running-in layer and matrix. a) sputtering bearings; b) electroplated bearings; c) Spray the bearing. 3.2 Basic parameters The basic parameters of the bearing are shown in Table 1, and the schematic diagram of the composition is shown in Figure 1. Table 1 Recommended size and shape tolerance of bearings are in millimeters Outer diameter D1 wall thickness et Free bomb Tensor Alloy layer thickness Wall thickness tolerance zone Half circumference Tolerance zone Opposite facing the outer circle Busbar parallelism Width tolerance B D1≤100 100 \u003cD1≤160 2,2.5,3 3, 3.5, 4, 5 0.5~2.0 0.7~2.5 0.2~0.5 0.3~0.7 0.012 0.015 0.030 0.035 0.030 -0.2 -0.3 160 \u003cD1≤220 D1 >220 4,5,6 5,6,7.5 1.0~3.0 1.5~4.0 0.3~0.7 0.3~0.8 0.022 0.025 0.045 0.050 0.035 0.040 -0.4 ......

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