ISO-4127-2-1980.pdf
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1、ii7 - International Standard 412712 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWblEKC1YHAPO S : for welding (see right hand side of figures 1 and 2). 2.3 Nominal sizes The nominal diameter of a roller is the nominal size of roller fairleads, in millimetres. The nominal sizes are as follows : Type
2、 Z : 80, 100, 150 Type R : 80, 100, 125, 150 3 Dimensions and loading 3.1 The main dimensions and loadings of a roller fairlead are given in the figures and tables 1 and 2. 3.2 The maximum loading values are given in the tables of dimensions. In compliance with the nominal sizes, the max- imum diame
3、ter of steel and fibre rope is given. The basic loadings are : 75, 125, 220 kN. 4 Materials The following materials shall be usedfor manufacturing the fairleads : Body : weldable steel having a yield Point of 25 x 104 kN/m2 (25 kgf/mm% Roller : cast steel, or malleable cast iron having a yield Point
4、 of 24 x 104 kN/m2 (24 kgf/mmz). Bolt and axle : steel having a yield Point of 36 x 104 kN/m2 (36 kgf/mm% Bush : bronze. 5 Construction The construction of roller fairleads and the method of welding Parts shall be in accordance with the provisions of this Interna- tional Standard. 6 Finish 6.1 The b
5、ody shall be welded, with blunted edges and polished welds. 6.2 The rollers shall be cleaned castings, with smooth work- ing surfaces. 6.3 The bolt and socket shall be manufactured according to national Standards. Copyright International Organization for Standardization Provided by IHS under license
6、 with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 00:52:18 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4127/2-1980 (E) 1 View C C r-i-a Al , Securing m ethod P Securing method S Figure 1 - Common roller fairlead (Type 2) Table 1 - M
7、ain dimensions (Type 2) Size D” d 4 d2 d3 h 4 L 1 12 13 mm I 80 32 60 120 18 76 126 640 240 290 48 II 100 40 70 160 22 96 154 800 300 365 60 Ill 150 60 100 220 28 132 216 1 200 450 560 90 (contiwed) B 170 210 315 b 110 140 210 I bl b2 s Sl Nominal forte Maximum rope diameter P steel fibre, mm kN mm
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- ISO 4127 1980
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