MGF Green Pin Bow Shackle Safety Pin User Guide
- June 4, 2024
- MGF
Table of Contents
MGF Green Pin Bow Shackle Safety Pin
Applications
Shackles are used in lifting operations and static systems as removable links to connect (steel) wire rope, chain and other fittings. Screw pin shackles are used mainly for nonpermanent applications. Safety bolt and fixed nut shackles are used for long-term or permanent applications or where the load may slide on the pin causing rotation of the pin. Chainor dee shackles are mainly used on one-leg systems whereas anchor- or bow shackles are mainly used on multi- leg systems.
Range
Green Pin® offers a wide range of bow and dee shackles for a variety of applications. The range stretches from WLL 0.33t to 3000t. This provides our customers with a very extensive range to choose a shackle that suits their application best. Most of the shackles are directly available from stock. Furthermore, shackles can be supplied to many standards such as the US Federal Specification RR-C-271, EN 13889, British Standard 3032, DIN 82101 etc. Additionally we offer a wide range of general commercial shackles, which are not suitable for lifting but merely for fixing purposes. Van Beest offers a wide range of other shackles to complement the Green Pin® assortment.
Design
All Green Pin® shackles have a specific design for a specific application. Some examples are:
-
Green Pin Super® Shackles which are made out of grade 8 steel. They are designed to be used in confined spaces. The higher material strength is used to reduce the physical dimensions of the product whilst maintaining its WLL and functionality;
-
Green Pin Polar® Shackles are for use in extreme climatic conditions with material properties guaranteed up to temperatures of -60°C;
-
Green Pin Power Sling® Shackles are designed to provide a better radius to the sling it lifts.
A bigger radius increases the life span of the sling significantly; -
Another example of a functional design is a shackle pin with a square sunken hole.
Because of the flat head there is less risk of the shackle getting caught in a net or a line.
These are all examples of highly functional designs, to optimize the use of the Green Pin® shackles in daily use.
Shackles used for lifting applications are generally marked with:
- Working Load Limit – e.g. WLL 25 T
- manufacturer’s symbol – e.g. GP
- traceability code – e.g. HA indicating a particular batch
- steel grade – e.g. 4, 6, 8
- CE conformity code (Conformité Européenne) – CE
Green Pin® Shackles meet all relevant requirements of the Machinery Directive 2006/42/EC and its latest amendments.
Finish
Shackles supplied by Green Pin® can be hot dipped galvanized, electro- galvanized, painted or self coloured, depending on the type of shackle and its application. You can find the finish of each type of shackle in the product section further on.
Certification
Upon request at time of order, all load rated shackles can be supplied with any of the following documents or certificates:
Free of Charge:
2.1 2.2 3.1 MTCa DNV GL 2.7-1a DNV GL 2.7-1b DNV GL 0377 DNV GL 0378 CE ABS PDA ABS MA
With additional Charges:
MTCb MPIa MPIb USa USb DNV GL CG3 BL
On request the proof load test certificates can be supplied surveyed by an official classification society, such as LROS, DNV GL, BV, ABS or any other officially certified inspection body. Please verify your certification requirements with Green Pin® at the time of order.
Green Pin® Bow Shackles, Green Pin® Dee Shackles and Green Pin Polar® Shackles are DNV GL type approved.
These shackles carry two DNV GL type approval certificates that show compliance with:
- DNVGL-ST-E271-2.71 Offshore Containers
- EN 12079-2 Offshore containers and associated lifting sets
- EN 13889 Forged steel shackles for general lifting purposes
- IMO/MSC Circular 860
- US Federal Specification RR-C-271
- DNV GL-ST-E273 Portable Offshore Units
- DNV GL Standard No. 0378 Offshore and Platform Lifting Appliances
The certificates TAS000011V and TAS00001H7 confirm that Green Pin® standard shackles and Green Pin Polar® Shackles meet the requirements set in the latest version of the above mentioned DNV GL standards.
The Green Pin Power Sling® Shackles are DNV GL type approved. This DNV GL type approval certificate is in compliance with:
- DNV GL Standard for Certification No. 0377 Standard for Shipboard Lifting Appliances
- DNV GL Standard for Certification No. 0378 Offshore and Platform Lifting Appliances
The TAS000018M certificate confirms that Green Pin Power Sling® Shackles meet the requirements stated in the latest version of the above-mentioned DNV standards.
Green Pin® Shackles G-4161, G-4163, G-4151, G-4153, G-5163, G-5261 and G-5263 are ABS Type Approved. The shackles have a Product Design Assessment Approval and a Manufacturer Assessment Approval Certificate. The shackles are type approved to be used as lifting gear or to be used as lifting device.
Fixed Nut Shackles
Shackles can also be used in more permanent constructions. These can be subject to dynamic loads and/ or extreme vibrations. In such applications there is a risk that, over time, the nut may start to move over the thread. We offer our range of Green Pin® Fixed Nut Shackles to avoid this risk. Green Pin® Standard, Polar® and Super® shackles can be equipped with an extra AISI 316 securing bolt that is drilled through the nut and shackle pin. This securing bolt is fastened with two sets of Nord-Lock® washers and a securing nut. This will keep the shackle nut in position. The Nord-Lock wedge-locking washers lock when subjected to extreme vibration or dynamic loads.
Green Pin® Fixed Nut Shackle
All lifting equipment requires regular inspection. Tracking and filing reports on paper can be a time consuming task. Green Pin® offers a solution with an easily accessible RFID (Radio Frequency Identification) chip in our range of Green Pin® Shackles. This RFID chip responds to a radio-signal that is transmitted by a reader. Each chip has a unique number and this number links the individual shackle to a record in an inspection management system. The chips are impact resistant and durable and they are countersunk into the end of the shackle pin. The chips are NFC (Near Field Communication) compatible, allowing users to scan, identify and track the shackles with the latest generation of NFC compatible smartphones.
Green Pin® offers the option of RFID implementation in all Green Pin® shackles with a minimum pin diameter of 28mm.
- RF Protocol: ISO 15693
- Operating Frequency: HF – 13.56 MHz
Testing
Generally load rated products are Proofload tested, and certificates can be supplied upon request. For specific information on certificates we refer to the separate paragraph on certification.
Green Pin® shackles are Proofload tested at the following loads:
working load
limit| Green Pin®
Bow or Dee Shackles
Polar® Shackles
Heavy Duty Shackles
BigMouth® Bow Shackle| Green Pin
Super® Shackles| Green Pin®
Sling Shackles| Green Pin
Power Sling® Shackle| Green Pin®
Web Sling Shackle| Green Pin
BigMouth® Dee Shackle
---|---|---|---|---|---|---
| proof load| proof load| proof load| proof load| proof
load| proof load
t| t| t| t| t| t| t
0.33| 0.66| | | | |
0.5| 1| | | | |
0.75| 1.5| | | | |
1| 2| | | | |
1.5| 3| | | | |
2| 4| | | | |
3.25| 6.5| | | | 8.13|
3.3| | 6.6| | | |
4.6| | | | | | 9.2
4.75| 9.5| | | | 11.88|
5| | 10| | | |
6.5| 13| | | | 16.25|
7| | 14| 14| | |
8.5| 17| | | | 21.25|
8.6| | | | | | 17.2
9.5| 19| 19| | | |
12| 24| | | | |
12.5| | 25| 25| | |
13.5| 27| | | | |
15| | 30| | | |
15.5| | | | | | 31
16| 32| | | | |
17| 34| | | | |
18| | 36| 36| | |
21| | 42| | | |
25| 50| | | | |
30| 60| 60| 60| | |
35| 70| | | | |
40| | 80| 80| | |
42.5| 85| | | | |
55| 110| 110| 110| | |
75| 150| | 112.5| | |
85| 170| 170| | | |
120| 240| 240| | | |
125| | | 187.5| 250| |
150| 225| 225| 225| 300| |
175| | 262.5| | | |
200| 300| | 300| 400| |
250| 375| | 375| 500| |
300| 450| | 450| 600| |
400| 600| | 532| 800| |
500| 750| | 665| 1000| |
600| 900| | 798| 900| |
700| 1050| | 931| 1050| |
800| 1200| | 1064| 1200| |
900| 1350| | 1197| 1350| |
1000| 1500| | 1330| 1500| |
1250| 1875| | 1663| 1875| |
1500| 2250| | | | |
1550| | | 2061.5| 2325| |
Instructions for use
Select the correct type and WLL of the shackle for the particular application. If extreme circumstances or shock loading may occur, this must be taken into account when selecting the correct shackle. Please note that commercial shackles are not to be used for lifting applications.
Shackles should be inspected before use to ensure that:
- all markings are legible;
- the body and pin are both of the same brand and type;
- the body and pin are both of the correct size;
- never use a safety bolt type shackle without using a securing pin;
- the pin, nut, cotter pin, or any other locking system cannot vibrate out of position;
- the threads of the pin and the body are undamaged;
- the body and the pin are not distorted or unduly worn;
- the body and pin are free from nicks, gouges, cracks and corrosion;
- shackles may not be heat treated as this may affect their WLL;
- never modify, repair or reshape a shackle by machining, welding, heating or bending as this will affect the WLL.
Assembly
Ensure that the pin is correctly screwed into the shackle eye: tighten it hand-tight, then secure it using a wrench or other suitable tool so that the collar of the pin is fully seated against the shackle eye. Ensure that the pin is of the correct length so that it penetrates the full depth of the threaded eye and the collar of the pin touches the surface of the shackle eye.
Incorrect positioning of the pin may be caused by a bent pin, too tight fitting thread or misalignment of the pin holes. Do not use the shackle under these circumstances. Never replace a shackle pin except with one of the same brand, type, make and size to ensure the shackle maintains its original WLL.
Make sure that the shackle is supporting the load correctly, i.e. along the axis of the shackle body centerline. Avoid bending loads, unstable loads and overloads.
Side loads
Side loads should be avoided, as the products are not designed for this purpose. If side loads cannot be avoided, the WLL of the shackle must be reduced:
This graph is valid for almost all Green Pin® shackles, except for ROV Shackles (P-5363 and P-5367). These shackles are for in-line use only. The graph is also not valid for Green Pin® Sling Shackles (P-6033 and P-6013) and Green Pin Power Sling® Shackles (P-6043). If you want to apply a side load on a Green Pin® Sling Shackle or a Green Pin Power Sling® Shackle, please contact Van Beest.
In-line lifting is considered to be a load perpendicular to the pin and in the plane of the bow. The load angles in the graph represent the deviating angles from in-line loading.
When connecting shackles to multi-leg slings, consider the effect of the angle between the legs of the sling. As the angle increases, so does the load in the sling leg and consequently in any shackle attached to that leg.
When a shackle is used to connect two slings to the hook of a lifting device, a bow type shackle must be used. The slings must be connected to the shackle body, and the shackle pin must be placed in the hook. The angle between the slings should not exceed 120°. If symmetrically loaded the shackle may be used to the full WLL.
To avoid eccentric loading of the shackle a loose spacer may be used on either end of the shackle pin. Do not reduce the width between the shackle jaws by welding washers or spacers to the inside of the shackle eyes or by narrowing the jaws, as this will affect the WLL of the shackle.
When a shackle is attached to the top block of a set of wire rope blocks the load on this shackle is increased by the value of the hoisting effect.
Avoid applications where the load moves over the shackle pin; the pin may rotate and possibly be unscrewed. If moving of the load cannot be avoided, or when the shackle is to be left in place for a prolonged period or where maximum pin security is required, use a shackle with a safety bolt, nut and cotter pin or a shackle with a fixed nut.
Shackles should not be immersed in acidic solutions or exposed to acidic fumes or other chemicals that are potentially harmful for the shackle.
Point loading
Shackles are used in lifting- and static systems as removable links to connect (steel) wire rope, chain and other fittings. Most of the times the load bearing component that connects to a shackle is of a rounded shape. Point loading of shackles during lifting operations is allowed but the minimum dimension of the rounded component to be lifted should be equal to or bigger than the bow size of the shackle being used. The maximum load of the configuration is limited by the component with the lowest WLL. Increasing the contact area by using bigger diameters and/or pad eyes can be an advantage. Sharp edges should be avoided. Green Pin® shackles can also be used in below configurations. The maximum load of the configuration is limited by the component with the lowest WLL.
The crown of a Green Pin® Sling Shackle (P-6033) is wider than that of a standard shackle, thus creating a bigger bearing surface. This improves the lifetime of the sling. Green Pin® Sling shackles can also be used in below configurations. The maximum load of the configuration is limited by the component with the lowest WLL. For information about point loading of the Green Pin Power Sling® Shackle (P-6043) please contact [email protected].
Pin- Pin configuration
When the shackle eyes touch and the pins do not bear properly, the
configuration should not be used.
Bow - Pin configuration
When the shackle body of the inner shackle touches the shackle eyes of the
outer shackle and body and pin do not bear properly, the configuration should
not be used.
Temperature
If extreme temperature situations occur, the following load reductions must be taken into account:
Temperature| Reduction for elevated temperatures
New Working Load Limit
---|---
up to 200°C| 100% of original Working Load Limit
200 – 300°C| 90% of original Working Load Limit
300 – 400°C| 75% of original Working Load Limit
400°C| not allowed
The rating of shackles to EN 13889 assumes the absence of exceptionally hazardous conditions. Exceptionally hazardous conditions include offshore activities, the lifting of persons and the lifting of potentially dangerous loads such as molten metals, corrosive materials or fissile materials. In such cases a competent person should assess the degree of hazard and the WLL should be reduced accordingly.
Inspection
Shackles must be regularly inspected in accordance with the safety standards
given in the country of use.
This is required because the products in use may be affected by wear, misuse,
overloading etc. which may lead to deformation and alteration of the material
structure. Inspection should take place at least every six months and more
frequently when the shackles are used in severe operating conditions.