Link 51 diagonal and horizontal frame bracing

Pallet racking frame ties horizontal and diagonal bracing

With Linik51 pallet racking like most types of pallet racking the pallet racking frames consist of two uprights base plates and both horizontal and diagonal bracing.


Many using Link 51 pallet racking do not realise there are in fact two types of pallet racking bracing both looking very similar. The standard duty for both horizontal and diagonal types of pallet racking bracing is manufactured from 1.5mm thick steel. The heavy duty Link 51 pallet racking bracing is manufactured from 1.78mm thick steel. The thicker and stronger pallet racking bracing is used in the EE extra heavy duty and the SS super heavy duty pallet racking frames.
Depending on the depth of the pallet racking frame will alter the length of both the horizontal and diagonal pallet racking bracing lengths. The overall lengths of the Link 51 pallet racking bracing also changed after the September 1999.


If you have any questions on lengths, type and duties of Link 51 pallet racking contact our pallet racking design team on 01765 640 160.

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Fitting an over rack mezzanine floor

How to fit over rack mezzanine floor or a free standing mezzanine floor?


Do you have existing pallet racking and are considering adding an over rack mezzanine level to form a new mezzanine floor? Or are you considering a free standing mezzanine floor? If you have the option of doing either it is possible in most situations to install an over rack or free standing mezzanine floor without dismantling the pallet racking.


You will have to carefully look at the cost options as often if retrospectively fitted the costs can often be similar. You will also need to consider fire protection and building regulations for means of escape, falling from height and other risks which fall under the current UK building regulations for mezzanine floors.


Whatever type of mezzanine floor you are considering why not call our mezzanine floor design team here in Yorkshire on 01765 640 160.

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Link 51 pallet racking upright and frame duties

Link 51 pallet racking has four types of uprights that are combined with the bracing and base plates top form the pallet racking frames.
The four pallet racking upright duties from Link 51 are M standing for medium, H standing for heavy duty E standing for extra heavy duty and S standing for super heavy duty. These all vary slightly in dimensions and design but do all take the same beams although technical and design criteria must be followed.


M duty Link 51 pallet racking uprights are stamped on the front face with an M and are 83.44mm wide by 55mm deep into the pallet racking frame.

H duty link 51 pallet racking uprights are stamped with an H on the front face and are 84mm wide and 65mm in the depth.

E duty Link 51 pallet racking upright are stamped with an E on the frame and are 85.28mm wide and 61mm deep.

S duty Link 51 pallet racking uprights are stamped with an S and they are 86.6mm wide and 61mm deep.
These different duties can be combined to form frames using a splice for further technical details contact our pallet racking design team.




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Old style link 51 beams 2625mm

Link 51 pallet racking beams new or used

Considering Link 51 pallet racking beams new or used? Looking at link 51 pallet racking beams the first question to answer is what type of pallet racking beam is it this is before you look at the size and span of the pallet racking beam. Link 51 changed the design and loading capabilities of their pallet racking beams. The old style Link 51 pallet racking beams can be clearly determined as they have a slight pressed channel running the full length of the front face of the beam. The new style pallet racking beams have a flat front face so the two types can be easily recognised.


Once you have determined the type of Link 51 pallet racking beam there are four further questions to answer.
The first is the length this is not the overall length but the clear entry so either measure the distance between the uprights with the pallet racking beam in position. Or measure the distance from the inside of the two connectors on either end this should be around 6mm shorter than the clear entry. This will give you the clear entry length of the pallet racking beam once the 6mm has been added.


The second is what the beam section is made from it will either be an open beam essentially a C shaped channel with the open section of the beam on the underside of the pallet racking beam when it is fitted into the pallet racking. Or more commonly a box beam this is where the beam forms a total box with a seem visible on the beam box section.


The third is the depth of the pallet racking beam in the box or open section so with the beams in the pallet racking measure from the top face of the beam where the pallets sit to the underside of the front face of the pallet racking beam.


The fourth is the beam section width this is the measurement from the front face of the pallet racking beam across the top of the beam section into the depth of the pallet racking storage area. This is essential the top face of the beam section that the pallets sit on.


Once you have this information you can work out the beams safe working loads or UDL in pairs this is not to be confused with the bay loads.


If you have any questions or are looking to find additional Link 51 pallet racking beams new or used contact our pallet racking design team on 01765 640 160.

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warehouse pallet racking

Pallet racking design element considerations

When designing pallet racking there are many pallet racking design element considerations some of the most important are listed below. This is before aisle widths, transfer aisles or pallet turning and pallet retrieval clearances are considered. This shows the importance of selecting a competent and experienced pallet racking supplier and pallet racking installers.



  • Pallet racking beam length


Selecting the correct pallet racking beam length is important not just to give you the correct space to store pallets but also to allow for the recommended clearances. Considering the pallet racking run and building length alongside pallet weights and pick rates will help you select the correct beam length. Pallets are usually stored two to a bay level in 2700mm clear entry beams but there are many variants that can work far better in many cases. If you want to reduce the number of frames and therefor the cost of your pallet racking you may wish to store three pallets per beam level. However this does not always offer the best solution particularly if the pallets are heavy.



  • Pallet racking beam loads


In short as discussed above the weight of the pallets of objects stored on the pallet racking beams is the beam loadings. These are not to be confused with the bay loadings for more technical details call our pallet racking design team.



  • Pallet racking beam types


There are many types of pallet racking beams with most manufactures offering several types of very similar beams offering different loading and cost options. The main two types or pallet racking beams are open section and closed or box beams generally these boxbeams will offer a higher beam load than an open beam of the same size. However this is not always the case so if in any doubt check these details with an expert.



  • Pallet racking beam pitch


Put simply this is the gap in between the pallet racking beam levels in the height up the bay this is measured from the top of one beam to the top of the next beam. Beam types and the beam pitches that are available in different pallet racking systems varies so ultimately one manufactures specifications may not be the most suitable for your pallet sizes. An example of this would be a system that uses deep beams it could mean the difference between being able to get a further beam level and ultimately several hundred more pallet positions in a building.



  • First beam level


This is the measurement from the ground to the first beam and can be absolutely critical when working out the loadings that a pallet racking system will take. So if you increase the level to the first beam you could find you are overloading the pallet racking system.



  • Pallet racking frame height


This is the height of the pallet racking frames this does not mean that it has to be the height up to the top of the top pallets so again savings could be made.



  • Pallet racking frame depth


This is the depth of the frame or overall fronts to back measurement most commonly 900mm or 11000mm although there are many variants that can affect this.



  • Pallet racking frame load


This is the loadings that the pallet racking frame can take and is used to calculate the safe working bay load. One of the key considerations is the upright duty which again varies between manufactures and their various products. Most commonly standard duty medium duty heavy duty and extra heavy duty.



  • Pallet racking foot plate type


Pallet racking foot plates vary in loading ratings, design and costs with certain types giving better bay loadings and certain types working with different forklift trucks and warehouse systems.
If you require any further information on pallet racking call our pallet racking design team.

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Pallet Racking

Pallet Racking Terminology

When buying new and used pallet racking there are a few key phases that you should understand. Below is all the pallet racking terminology explained:


  • Pallet racking bays


The storage module between the pallet racking uprights is referred to as a bay so a single bay of pallet racking consist of the two upright frames at either end of the pallet racking beams with the beams in the middle.



  • Pallet racking runs



These are a series of the module bays so for instance you may have one run made up of three bays of pallet racking. Remember the number of pallet racking frames in a run is always one more than the number of bays. So a three bay run of pallet racking will have four frames.



  • Single sided run of pallet racking



A single sided run of pallet racking often called a single entry run and is accessed from one side, you should never have a single run of pallet racking picked or loaded from both sides. These are often either placed against and wall or have anti collapse mesh to one side.



  • Double sided run of pallet racking



These are two runs back to back often called double entry or back to back runs of pallet racking and should be fitted with row spacers to allow for clearance at the back of the pallets on each run these are usually 200mm long and the height, loadings and other variables will affect the type and number in the height of each pair of back to back pallet racking frames.



  • Levels in the pallet racking bays



The number of levels is simply the number of storage levels but a level may describe a number of items it will at least apply to a pair of pallet racking beams. It may also cover items like timber or mesh decks, pallet support bars, drum chocks, stepped beams, chipboard, shelf panels fork spacers or pallet foot supports.



  • Pallet racking aisles



Pallet racking aisles are the aisles that the forklift truck or other mechanical handerling equipment will used to access the area between pallet runs.



  • Gangways for pallet racking



Pallet racking gangways are the space for movement but these are areas that do not give access to the pallet racking directly for picking or loading.
There are other terms like transfer aisles and terms used to describe the pallet racking components and accessories. Information on these can be found on other pages of this website but for technical and design advice it is important that you speak to an experienced pallet racking supplier, designer or installer. Our pallet racking design team would be pleased to assist with any questions on 01765 640 160.

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