Products
Hooks
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Downloads 3D-2D drawings
HOOK is one of the most critical safety related item of any crane, and its relative cost compared to crane complete cost, makes this component to be the priority item from a safety point of view.
Different industrial technologies and steel grades are used worldwide but the safest and more efficient is the FORGING technology. This is why 100% of IRIZAR hooks are forged.
During the edition of this catalogue all European old national conflicting standards are withdrawn to be substituted by EN13001-3-5:2016 NEW STANDARD, as the only one harmonized crane shank hook standard in force, together with antecessor ISO17440.
Crane hooks can achieve different mechanical properties depending on the crane purpose and concept design.
All hooks must be LOAD TESTED at the end of the process to validate the design and guarantee the general integrity. This test must be done to the sole hook as a component and/or together with the crane during the final test loading. Generally speaking, the hook tested as a component is at higher force than the one applied to the crane because the required normative safety factors.
Hook Blocks
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Crane block or Hook block is considered the complete component of the hoist and it’s linked to the crane by the rope pulleys/sheaves though the rope.
Its design depends on the crane purpose and concept design whereas rope pulleys or sheaves and hook assembly design will be the key factor to achieve customer requirements and expectations. Using the previous pages for the right hook selection, sheaves must keep a proportional relation and must be symmetric to the gravity center of the Crane Block.
Last decades sheaves diameter has been decreased thanks to wire ropes advanced technology using more flexible wire ropes, reducing rope diameter and increasing strength thanks to very advanced materials, having decreased the historical factor (rope diameter (d1) x factor=sheave diameter (D).
The number of sheaves in the Hook Block will depend on the total WLL of the Hook Block and individual sheave WLL: falls is called to the twisted rope, whereas 1 sheave has always 2 falls, 2 sheaves have 4 falls…
The fall must have a certain angle for safety reasons: regularly the maximum angle is regulated by International Standards.
Proof Test Load (PTL) is being performed at IRIZAR benches in order to cover a full guarantee to the crane operator.
Shackles
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Shackle is considered critical accessory from a safety point of view because is one of the major hardware link between the crane and the load, and regularly works fix together with chain or non steel fittings as textile slings and similar terminals.
Related to LIFTING application, it’s considered a fix/static temporary rigging accessory and does not belong to the crane itself. Straight design shackles are regularly used for 1 pull and bow design shackles for various pulls. For heavy duty lifting operations widebody is the referred and valued product, that guarantees a safe radius of the related sling into operation, that guarantees a longer lifetime of the related sling.
Related to MOORING application, forged shackle is a great product to link two chains, chain with rope, rope with sling, connected to triplates and masterlinks… or any technology used for floating structures long term mooring lines.
IRIZAR FORGE is approved by DNV and ABS to produce, test & certify Offshore Mooring Accessories in material R4 according to “DNV-OS-E302 Offshore Mooring Chain” and “ABS Guide for Offshore Mooring Chain”.
Under this specific conditions, FORGED material is the preferred technology to guarantee safety and long lifetime. For high safety factors during long lifetimes, super alloy steels are the valued ones to guarantee functionality, safe operating and low maintenance costs during its long lifetime.
As for forged hooks, all shackles are produced for operating temperatures from -40ºC to +200ºC, considered normal, abnormal and extreme conditions.
Other Connectors
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Connectors or Links are used both for Lifting as well as Mooring Applications and it is considered critical accessory from a safety point of view because is one of the major hardware link between the crane and the load, and regularly works fix together with chain or non steel fittings as textile slings and similar terminals.
For Lifting application, connectors are considered as rigging accessories, consequently the links are not belonging to the crane itself, but as a separate and temporary crane accessory.
For Subsea Mooring, links & connectors are considered part of the long term mooring line for floating platforms. Regularly floating platforms are located in deep water seas.
SUBSEA Deep Water application is considered one of the most critical OFFSHORE application because of the poor accessibility of the products, harsh environment and high costs to get the products back to top site. Consequently maintenance jobs are difficult to manage and long lifetimes are required.
Under these conditions, FORGED material is the preferred & valued technology to guarantee long lifetimes with low maintenance costs. For high safety factor during long lifetime, super alloy steels are the preferred steel grades to guarantee a safe functional long life products. Surface protection & coatings have also a key role to keep designed lifetimes.
IRIZAR FORGE is approved by DNV and ABS to produce, test & certify Offshore Mooring Accessories in material R4 according to “DNV-OS-E302 Offshore Mooring Chain” and “ABS Guide for Offshore Mooring Chain”.
Irizar Standard Forgings
Some projects require more than a stardardized crane component. That´s why Irizar Forge offers Irizar Advanced Solutions: a full service solution for producing tailor made forged components in which Irizar Forge takes care of the entire development process. The service package ranges from design and production through to testing and third party certification. This process usually involves close cooperation between the customer and Irizar Forge´s engineering departments – something Irizar Forge excels at.
Irizar Forge has a proven track record in industries ranging from steel and nuclear to construction and hydro. This has led us to undestand the needs of the industries we serve and to provide an excellent customer experience during such a development processes.