Ship’s mooring and towing fittings -Universal fairleads with upper roller

ISO 13733:2012(E)

Universal fairleads with upper roller 4R

Universal fairleads with upper roller 5R

Materials

The materials of the following components are to be used for manufacturing the universal fairleads.
— Frame and other plates:weldable steel plates having a yield point of not less than 235N/mm2 except frame with rope guide for nominal size 400A,400B and 400C shall be made of weldable steel plates having a yield point of not less than 315N/mm2.
— Roller:weldable steel plates having a yield point of not less than 235 N/mm2 except rollers for nominal size 400A,400B,and 400C shall be made of weldable steel plates having a yield point of not less than 315N/mm2,or equivalent steel tubes.
— Axle:carbon steel having a yield point of not less than 345N/mm2.
— Bush:brass or bronze or equivalent.

Manufacturing and inspection

All surfaces of the universal fairleads,including welding,shall be free from any visible flaws or imperfections.
All surfaces in contact with the ropes shall be free from surface roughness or irregularities likely to cause damage to the ropes by abrasion.
The universal fairleads shall be coated externally with an anti-corrosion protective finish.
All rotating parts shall be provided with greasing.
Nominal size Dn B×H D1 D2 h h1 h2 b b1 b2 b3 b4 w c
140 195×150 139.8 114.3 277 130 480 335 515 656 820 140 260 150
160 200×150 165.2 114.3 290 145 515 365 570 730 920 140 310 175
180 200×150 190.7 139.8 315 155 560 391 620 800 1000 140 360 200
200 200×150 216.3 139.8 328 170 590 416 675 896 1110 140 410 225
250 250×200 267.4 165.2 416 195 715 517 825 1046 1270 180 520 280
300A 300×250 318.5 216.3 517 220 870 618 980 1206 1480 200 620 330
300B 300×250 318.5 216.3 517 220 870 618 980 1206 1480 200 620 330
400A 350×250 406.4 216.3 561 265 960 756 1210 1450 1750 200 795 420
400B 350×250 406.4 216.3 561 265 960 756 1210 1450 1750 200 795 420
400C 350×250 406.4 216.3 561 265 960 756 1210 1450 1750 200 795 420
Nominal size Dn e w1 w2 T T1 T2 T3 T4 f Welding leg lengtha,b SWLc Calculated weightd kg
Z1 Z2 (Kn) (t) 4R 5R
140 70 30 100 12 10 10 12 12 3 7 4 137 14 159 194
160 83 40 100 14 10 14 14 14 4 7 5 196 20 218 267
180 95 40 100 16 10 14 16 16 4 7 5 245 25 279 343
200 108 50 100 18 12 16 18 18 6 9 7 314 32 373 455
250 133 65 200 22 16 18 20 20 6 11 7 510 52 730 877
300A 159 80 200 24 20 22 24 22 7 14 8 687 70 1173 1411
300B 159 80 200 26 22 24 24 22 8 15 9 736 75 1267 1521
400A 203 100 200 26 22 22 32 28 7 15 8 981 100 1710 2032
400B 203 100 200 28 24 26 32 28 8 17 9 1256 128 1958 2332
400C 203 100 200 30 26 28 32 28 8 18 9 1373 140 2114 2516
a Welding with chamfering is available based on the same welding volume/strength b Welding otherwise mentioned in the figures in this international Standard and in this table: minimum leg length is to be 1/2 of thinner plate thickness. c The SWL is the maximum application rope tension. The SWLs shown in this table are for reference only. These are based on the loadings as mentioned in Annex A . The “SWL” may be adjusted depending on the actual loading conditions, and the actual marking shall be agreed between the user and the manufacture. d The calculated weight is for reference only excluding foundation.