Bolting is a traditional method used in engineering for creating a fixing. The Gantrail bolted (boltable) rail clips are the simplest and easiest to install. The clips can be used with different grades of bolt (8.8,10.9) and some clips can be fitted with preinstalled weld studs welded to the steel rail support surface.
Bolting is a traditional method used in engineering for creating a fixing. The Gantrail bolted clips are the simplest and easiest to install. The clips can be used with different grades of bolt (8.8,10.9) and some clips can be fitted with preinstalled weld studs welded to the steel rail support surface. (soleplate, beam – add to diagram with annotation, send example)
Gantrail recommend the use of grade 8.8 bolts for all normal applications as they offer the most economical solution. Some construction sites require that only grade 8.8 bolts are used. In some cases, where a larger clip cannot be used, it is possible to increase the horizontal load capacity by upgrading to 10.9 grade bolts.
Gantrail have a selection of bolted clips to fit all rail sizes including some that are no longer routinely made but are still found in some older applications. As a guide, the size of clip for any rail is in proportion to the rail it is designed to fix. (bigger rail, bigger clip)
Gantrail conduct extensive inhouse performance testing with third party witness of tests to ensure our clips perform reliably and result in a long service life.
Size for size welded clips give a stronger installation but bolted clips are often more convenient & cost effective.
Find or estimate the horizontal force (sideload) to be carried by the clip. It is assumed that all the load from one wheel will occur at one clip. To estimate the load, it may be assumed to be 15% of the vertical wheel load. i.e. Load per wheel: 294.3kN x 0.15 = 44.15kN
Choose the style of clip you require – bolted or welded. These are identified with their respective strengths in the table below.
Find the rail foot width dimension to be used. See Crane Rails.
Check that the selected clip will fit the installation. The table gives the dimension that must be added to the rail foot, this overall dimension is the minimum support width required.
Check that the other clip dimensions will suit the application by referring to the Gantrail datasheet for the chosen clip. These only show a limited number of rail sections, Gantrail can advise on other sections required.
25 Series Clips
Overview
• The Gantrail 25 series is our patented range of through-bolted (through the rail support structure) cam adjustable clips for use in medium to heavy duty crane rail applications.
• Used in conjunction with our range of rail pads as part of the ‘soft mounting system’.
• For historical and cultural reasons, these clips are preferred in some markets and applications compared to our ‘double-wedge’ clips.
Size, strength and adjustability
• Sizes to suit most medium/large rail sections.
• Lateral load capacities up to 200kN.
• Uplift capacity up to 90kN
• Lateral adjustment ranging from 14 to 24mm.
Design features and benefits
• Robust fully sealed design making it ideal for bulk handling applications where bulk material can spill onto the rail system
• Largest uplift capacity of all Gantrail clips
Applications
• Mining, seismic applications and other applications where uplift resistance is important such as breaking areas for Automatic Storage Retrieval Systems (AS/RS).
Clip Name
Horizontal Force Capacity (Grade 8.8 bolts)
Horizontal Force Capacity (Grade 10.9 bolts)
Dimension to be added to Rail Foot (Minimum mounting width)
Overview
• The Gantrail 3 & 4 series is our range of standard hexagon head through-bolted (through the rail support structure) rubber nosed clips for use in light/medium duty crane rail applications.
• Used in conjunction with our range of rail pads as part of the ‘soft mounting system’.
• Best balance of cost vs performance.
Size, strength and adjustability
• Sizes to suit all of the commonly available rail sections.
• Lateral load capacities up to 250kN.
• Lateral adjustment ranging from 10 to 20mm.
Design features and benefits
• The ‘double-wedge’ design creates a self-tightening mechanism that has been proven by Gantrail around the world since 1965.
• 4 series clips use updated intuitive design that ensures fool proof installation.
• 4 series clips use Patented bolt engagement technology to reduce maintenance.
• Can be supplied with or without the hexagon head bolt depending on customer requirements (Generally supplied with fastener assembly using full nuts)
• The design can make use of the Gantrail low-height locking flange nut to prevent loosening and to keep the overall assembly height to the absolute minimum; this makes them ideal for systems using guide rollers.
Applications
• ALL, including but not limited to, mining, bulk handling, shipyards and water/sewage treatment facilities
Clip Name
Horizontal Force Capacity (Grade 8.8 bolts)
Horizontal Force Capacity (Grade 10.9 bolts)
Dimension to be added to Rail Foot (Minimum mounting width)
Overview
• The Gantrail 6 series is our range of through-bolted (through the rail support structure) cam adjustable clips for use in light/medium duty crane rail applications.
• For applications where rubber noses are not preferred by some Consulting Engineers.
• Generally used without pad beneath the rail to form a hard mounted system.
• For historical and cultural reasons, these clips are preferred in some markets and applications compared to our ‘double-wedge’ clips.
Size, strength and adjustability
• Sizes to suit most medium sized rail sections.
• Lateral load capacities up to 140kN.
• Lateral adjustment ranging from 14 to 24mm.
Design features and benefits
• Robust fully sealed design making it ideal for bulk handling applications where bulk material can spill onto the rail system
• 6124/20 ‘expansion clip’ model allows thermal expansion/contraction.
• 6124/20C ‘clamp’ model bears down onto the rail flange to help resist thermal expansion/contraction. For applications where keeping the rail fixed in one position is important.
Applications
• Marine applications such as shipyards and shiplifts.
Clip Name
Horizontal Force Capacity (Grade 8.8 bolts)
Horizontal Force Capacity (Grade 10.9 bolts)
Dimension to be added to Rail Foot (Minimum mounting width)
Overview
• The Gantrail 7 series is our range of standard hexagon head through-bolted (through the rail support structure) rubber nosed clips for use in light/medium duty crane rail applications.
• The 7 series offers the lowest possible mounting width for systems where there is limited space beside the rail.
• Clip adjustment is sacrificed to offer lowest possible mounting width for narrow beam applications or to reduce cost of ground tracks.
• Used in conjunction with our range of rail pads as part of the ‘soft mounting system’.
• Best balance of cost vs performance.
Size, strength and adjustability
• Sizes to suit most medium sized rail sections.
• Lateral load capacities up to 100kN.
• Lateral adjustment of 10mm.
Design features and benefits
• The ‘double-wedge’ design creates a self-tightening mechanism that has been proven by Gantrail around the world since 1965.
• Can be supplied with or without the hexagon head bolt depending on customer requirements (Generally supplied with fastener assembly using full nuts)
• The design can make use of the Gantrail low-height locking flange nut to prevent loosening and to keep the overall assembly height to the absolute minimum; this makes them ideal for systems using guide rollers.
Applications
• Automatic Stacking Crane (ASC) tracks in ports, overhead crane tracks for workshop cranes, cross travel rails on cranes.
Clip Name
Horizontal Force Capacity (Grade 8.8 bolts)
Horizontal Force Capacity (Grade 10.9 bolts)
Dimension to be added to Rail Foot (Minimum mounting width)
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Gantrail operate worldwide with offices and distributors in most major countries. To find out more information, enquire about becoming a Gantrail partner or if you want to contact your local Gantrail representative, please click below.
Gantrail are dedicated to sharing their 50 years of expertise, showcasing the latest improvements in the design, installation and support of crane rail interfaces that they bring to the industry.
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