Quick Release Link and the NemagRope Pear Socket
Contents
1. Quick Release Link The listed cable sheaves generally have the measure 924 3 9 10 ments as stated in table 6 A rope pear socket can be fitted to a 9 10 11 Technical specifications of Nemag Rope Pear Sockets type S Pear size Wire rope diam Work load Break load Size in mm Weight quick release link of the same size or to a link with a different 10 11 12 size as indicated in this table 6 11 12 13 The following provides an example of how you can find the right Hi e 924 99 94 11000 70000 902 132 40 3295 31 27 40 58 27 4 size link and rope pear socket and ensure additional safety 15 1026 25 27 13000 85000 222 143 43 375 32 285 46 66 30 5 For example a wire rope diameter of 26 mm 14 15 1130 28 30 15000 95000 239 196 45 400 36 31 5 50 0 33 i Safe working load steel wire rope 10 000 kg oe 1232 3S 17000 110000 249 165 52 425 39 345 52 72 36 Gio According to table 5 rope pear socket no 924 1336 34 36 21000 125000 285 184 55 450 43 365 60 80 40 95 According to table 4 quick release link no 10 would be possible 1440 37 40 26000 155000 297 192 60 4 75 4 7 40 62 80 44 12 S 3221 42 44 32500 189000 314 204 66 425 53 46 70 80 4 7 13 5 1548 46 48 30000 180000 329 192 67 5 5 51 44 66 80 52 123 1648 46 48 36000 215000 343 218 70 500 56 50 75 90 52 18 5 The working load is the recommended maximum load for grabbing operations when quick release links and rope pear sockets are passing over a special cable sheave For ot2. The Nemag rope pear socket and quick release link A are used worldwide for very fast changing of grabs ad For quick and safe connecting and disc onnecting of any type of steel wire rope and chain Fa y i Complete overview of Nemag links and Nemag rope pear sockets for normal and compacted steel wire rope including all ordering tables Coupling and Uncoupling within a few seconds Coupling Step 1 place the locking piece in the C section Step 2 turn the key 90 to the right Step 3 until you hear a click Uncoupling Step 1 apply the key press and Step 2 turn 90 to the left Step 3 remove the locking piece The Nemag quick release link and the Ne Are manufactured with the greatest possible precision using high grade stee est quality standards In addition to that Nemag has adopted a safety and quality olves periodic quality assessments and load testing Every single quick release lin Coupling 8 sec Uncoupling 10 sec E R alta The Quick Release Link Locking piece of high grade steel refined to a tensile strength of 800 1000N mm2 Locking piece Contact surfaces hardened The perfect range of sizes ensures interchangeabi f r A lity of C sections and locking pieces C section of high grade steel refined to a tensile strength of 1000 1100 N mm2 High capacities special applications Nemag is able to provide special quick r
3. elease links for out of the ordinary applications like off shore applications for example As part of that we have in the past supplied special quick release links with a breaking capacity of 9000KN for a 95 mm chain cable including all required safety certificates The key Nemag also supplies a key especially designed for the quick release link This key has a hexagonal head that fits into the keyhole of the locking piece The horizontal handle provides sufficient grip to be able to open or close any locking piece with one short movement The sharp end of the handle can be used to clear A dirt on the outside of the keyhole j Temperatures Rope pear sockets can be fitted to the rope using a metallic casting mass or a 2 component casting mass Applying metallic casting on a too high temperature can cause structural decomposition from austenitic to martensite Martensite is a lot less flexible and as a result more brittle and not as resistant to the shocks rope pear sockets are exposed to Decomposition from austenitic to martensite happens when rope pear sockets are heated to temperatures above approx 300 degrees Celsius and to a greater extent at even higher temperatures That is why it is not permitted to apply casting alloys with a melting point above 245 degrees Celsius and a casting temperature above 320 to 350 degrees Celsius This has to be taken into account Make sure the temperature never r
4. her applications a safety factor in line with official international and national guidelines has to be adhered to Fitting the Rope Pear Socket to steel wire rope The rope pear socket can be fitted to the steel wire rope in a very straightforward manner using 2 component casting resin or by way of metallic casting The casting instructions below are very general please consult the user manual www nemag com and the instructions that come with the casting mass For specific information on the casting material we refer you to your local steel wire rope supplier When closely following the casting instructions you will achieve a permanent connection between steel wire rope and rope pear socket Carefully tie up the wire rope at a length of at least two times the wire rope diameter starting from a distance that equals the length of the rope pear socket cover to the casting level ridge minus 1x a wire rope diameters fig 1 Untwine all strands to make the ends of the wire rope look like a broom fig 2 Clean the broom thoroughly and remove grease with a branded degreaser or ultrasonic cleaning agent Maintain the broom in a downward position whilst cleaning to prevent liquids from seeping into the wire rope Then allow the cleaned wire rope end to dry Slide the rope pear socket over the broom until the untwined wire ropes almost reach the end level ridge for casting of the conical cover of the rope pear socket No
5. ises above 350 degrees Celsius and check this using thermochrome or temperature indicators of a well known and approved make or brand The shape and socketing technology of the rope pear socket reduce the bending of the wire rope to a minimum The rope pear socket is often used in combination with the quick release link but also widely applied in other coupling combinations User manual Erroneous use can result in austenitic being decomposed into martensite The specific manual has to be consulted when casting the wire rope into the rope pear socket the user manual can also be downloaded on www nemag com and in addition to that the instructions of the manufacturers of steel wire ropes and or casting products also have to be complied with For further information you can also refer to the last page of this brochure Advantages of the Nemag Rope Pear Socket e The Nemag rope pear socket has been designed to in combination with the Nemag quick release link smoothly pass over cable sheaves designed for that purpose o The life span of the Nemag rope pear socket generally surpasses that of the steel wire rope e The rope pear socket can be fitted by casting with a 2 component casting mass without the need for outside assistance and ensures an unbreakable connection Please note For specific information on the casting material we refer you to your local steel wire rope supplier or supplier of casting products When closely following the ca
6. n tested in a standard testing machine under controlled conditions in direct tension and at a uniform rate of speed The term Breaking load contains no implication of what load a rope pear socket will withstand if not properly used or if it suffers abuse All equipment using rope pear sockets must be properly maintained Rope pear sockets must be properly stored handled used and maintained within the rules of user manual Most importantly rope pear sockets must be regularly inspected before and during each use Inspections must meet local or applicable national safety regulations Damage abuse overloading or improper maintenance can cause failure and accidents If in doubt about the safe and proper use of rope pear sockets consult manufacturer
7. nd ensure additional safety 85000 For example a wire rope diameter of 26 mm 95000 Safe working load steel wire rope 6 000 kg 110000 According to table 2 rope pear socket no amp 125000 According to table 1 quick release link no 7 would be possible 155000 180000 240000 CON OO Hf WP CON OM OF BWP Dimension tables are subject to change Link size Working load Breaking load 25000 33000 37500 49000 54000 60000 75000 95000 110000 135000 160000 175000 260000 Size in mm Dimension tables are subject to change Pearnr Link nr Link size 8 9 10 9 10 OE Ne 2 Wee 12 13 14 13 14 15 14 15 2 14 15 onal Sizes of Cable Sheaves Size in mm The working load is the recommended maximum load for grabbing operations when quick release links and rope pear sockets are passing over a special cable sheave For other applications a safety factor in line with official international and national guidelines has to be adhered to Dimension tables are subject to change The working load is the recommended maximum load for grabbing operations when quick release links and rope pear sockets are passing over a special cable sheave For other applications a safety factor in line with official international and national guidelines has to be adhered to Combination of the Nemag rope pear socket type S with the Nemag quick release link On the tables Nemag Rope Pear Fitting with Nemag socket no
8. sting instructions you will achieve a o Our range of rope pear sockets is suited to any type of steel wire rope e There are rope pear sockets available for both standard steel wire ropes and special compacted steel wire ropes the S series rope pear sockets permanent connection between steel wire rope and rope pear socket Link size Working load Breaking load 25000 37500 Size in mm Pearnr Rope diam Sizes of Cable Sheaves Link size Size in mm 4 9 6 7 4 33000 9 4 5 6 6 i 49000 6 7 8 04000 924 ESE 60000 8 09 75000 1026 S 95000 9 8 9 10 110000 1130 10 11 12 135000 10 g L0 160000 1232 S 175000 11 102 260000 1336 12 13 14 12 TIRIS 1440 13 14 15 13 12 13 14 3221 15 14 13 14 15 15 14 15 14 15 15 17 17 Dimension tables are subject to change Dimension tables are subject to change Pear size Wire rope diam Work load Break load Size in mm Weight 10000 Combination of the Nemag rope pear socket with Nemag quick release link 14000 On the tables an 17500 Nemag Rope Pear Fitting with Nemag The listed cable sheaves generally have the Socket no Gick Relsasa anna 22500 i 27500 measurements as stated in table 3 A rope pear socket can be fitted to a quick release link of the same size or to a link with a 35000 i see eae 42500 different size as indicated in this table 3 52500 The following provides an example of how you can find out the 70000 right size link and rope pear socket a
9. w vertically lock the wire rope and the rope pear socket The wire rope under the rope pear socket has to be straight along a total length of 24 times the wire rope diameter fig 3 Close the bottom end of the rope pear socket at the end of the wire rope using a sealant to prevent casting material leakage Pour the resin and or casting liquid from above into the rope pear socket cavity as per the instructions provided by the manufacturer of the casting material Maintenance Quick release links rope pear sockets and similar fittings have to be cleaned regularly by removing aggressive and abrasive substances We recommend that you grease the links and pears Greasing should at least be carried out at 8 hour intervals when the equipment is in continual use Filing off protrusions and sharp edges caused by wear in particular on rope pear sockets will extend the life span Wear on the surface of the rope pear socket or quick release link of over 15 is not permissible and makes replacement necessary You may never harden or repair rope pear sockets and quick release links yourself for example by welding Ordering For further information you can contact Nemag s sales department by email or telephone You can also request a list of addresses of Nemag quick release link and rope pear socket retailers Any warranties expressed or implied concerning the use of rope pear sockets apply to new unused rope pear sockets whe
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