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Working Load Limit (WLL) The WLL is the safe load that a rope can carry on a particular service. The WLL should be based on the minimum breaking force, not the actual breaking force, which can vary depending on Construction and size. The recommended minimum design factors for steel wire ropes under general conditions are as per AS2759. Ropes that are used on appliances complying with any of the parts of the AS1418 or AS1735 series of Standards shall be subject to design factors specified by those standards. AS1666 series of standards specifi es the design factors for wire rope used in wire rope slings. Design factors less than the above may be used, subject to the appropriate risk assessment being done by a competent person for a particular application. Due account should be taken of the number of parts and the effi ciency whenever the design factor of a system is being determined. Regulatory authorities or other Standards may require other design factors. Efficiency of Terminal Rope Attachments When calculating the working load limit of a wire rope sling an allowance is made for the terminations. The table below (extracted from AS2759) gives the percentage that should be applied to a WLL calculation involving a particular rope fitting. Type of rope fitting or end attachment Typical tensile efficiency % (Note 1) Turnback eye with pressed aluminium alloy ferrule: (a) Turnback eye with pressed aluminium alloy ferrule. (b) Flemish eye with pressed sleeve. (c) Hand-spliced eye. (d) Open swaged socket. (e) Closed swage socket. (f) Open poured socket. (g) Closed poured socket. Figure 5.3 (in part) Terminal Rope Attachments. Resistance to vibration and impact Ease of fitting in field Refer to notes below ≤ 80(mm) rope diameter 95 Good - 2 & 3 > 80(mm) rope diameter 90 Good - - Flemish eye with pressed sleeve: ≥ 80(mm) rope diameter 95 Good - 2 & 3 01 - WIRE ROPE & <strong>STRAND</strong> > 80(mm) rope diameter 90 Good - - Hand spliced eye: ≥ 8 ≤ 20(mm) rope diameter 90 Good Good 1 ≥ 20 ≤ 60(mm) rope diameter 80 Good Good 1 > 60(mm) rope diameter 75 Good - 1 Open swaged socket 100 Good Fair 2 & 3 Closed swaged socket 100 Good Fair 2 & 3 Open poured socket 100 Fair Good 2 Closed poured socket 100 Fair Good 2 Wedge grip capel 100 Fair Good 2 Wedge type socket 80 Fair Excellent - Eye with wire rope grips 80 Good 4 & 5 Eye with fist grips 80 Good Very good 4 & 5 Notes: 1. Where lang’s Lay rope is used, the effi ciency is up to 15% less than that given 2. Fitting in the field is not uncommon, but specialised equipment is necessary. 3. Fitting in field is generally restricted to ropes with a diameter of no more than 20mm. 4. Not to be used for lifting applications. 5. When fi tted with the required number of wire rope grips, refer to AS2076 or the manufacturers recommendation. WWW.BULLIVANTS.COM 9
6x24 Construction: Unit of Measure - metre 6x25 Construction: Unit of Measure - metre Suitable for general engineering purposes. 01 - WIRE ROPE & <strong>STRAND</strong> Commonly used for slings or static applications (not recommended for dynamic applications). ORDER CODE Diameter (mm) Grade Finish Core Lay Min Breaking Force (kN) Approx. Mass (kg/100m) 110006 8 1570 Gal. Fibre RHOL 28.7 20.4 110032 9 1570 Gal. Fibre RHOL 36.4 25.8 110000 10 1570 Gal. Fibre RHOL 44.9 31.8 110115 11 1570 Gal. Fibre RHOL 54.3 38.5 140006 12 1570 Gal. Fibre RHOL 64.0 45.8 110013 13 1570 Gal. Fibre RHOL 75.9 53.8 110046 14 1570 Gal. Fibre RHOL 88.0 62.4 110016 16 1570 Gal. Fibre RHOL 115.0 81.5 110017 18 1570 Gal. Fibre RHOL 145.0 103 110058 20 1570 Gal. Fibre RHOL 180.0 127 110176 26 1570 Gal. Fibre RHOL 304.0 215 110196 32 1570 Gal. Fibre RHOL 460.0 326 Other sizes and confi gurations can be made to order. ORDER CODE Diameter Grade Finish Core Lay Min Breaking Force (kN) Approx. Mass (kg/100m) 110028 8mm 1770 Black Wire RHOL 40.3 26.7 110104 9mm 1770 Black Fibre RHOL 47.3 29.1 110007 9mm 1770 Black Wire RHOL 51.0 33.4 110009 10mm 1770 Black Wire RHOL 63.0 41.8 110037 10mm 2070 Gal. Wire RHOL 73.5 41.8 140017 11mm 1770 Black Wire RHOL 76.2 50.6 110041 12mm 1770 Black Wire RHOL 90.7 60.2 110123 13mm 1770 Gal. Wire RHOL 106.0 70.7 110001 13mm 1770 Black Wire RHOL 106.0 70.7 110128 14mm 1770 Black Wire RHOL 124.0 82 110049 16mm 1770 Black Wire RHOL 161.0 107 110055 18mm 1770 Black Wire RHOL 204.0 135 110141 18mm 1770 Gal. Wire RHOL 204.0 135 140018 3/4" EIPS Gal. Wire RHOL 262.0 149 110151 20mm 1770 Black Wire RHOL 252.0 167 110064 22mm 1770 Black Wire RHLL 305.0 202 110063 22mm 1770 Black Wire RHOL 305.0 202 110068 7/8" EIPS Gal. Wire RHOL 354.0 206 110070 24mm 1770 Gal. Wire RHOL 363.0 241 140019 1" EIPS Gal. Wire RHOL 460.0 269 110177 26mm 1770 Black Wire RHOL 426.0 283 110077 28mm 1770 Black Wire RHOL 494.0 328 110191 1 1/8" EIPS Black Wire RHOL 578.0 337 110084 32mm 1770 Black Wire LHOL 645.0 428 110078 32mm 1770 Gal. Wire RHOL 645.0 428 110083 32mm 1770 Black Wire RHOL 645.0 428 Other sizes and confi gurations can be made to order 10 1300 722 999
Page 1 and 2: OHS520211 FS520785 EMS520269 01 - W
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Page 9 and 10: Crane Rope Rotation resistant wire
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STRAND

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