Rail Clips for Industrial Crane Rail Systems
Engineered for maximum lateral load and vibration absorption. Trusted by global ports and steel mills.
The Core of Your Track: What is a Crane Rail Clip?
A rail clip is the most critical fastening component that secures the rail to its supporting steel or concrete base. While it allows for necessary longitudinal movement due to thermal expansion, its primary job is to hold the rail laterally under extreme dynamic loads. For a detailed comparison of adjustable forged clips, welded base clips, spring clips, and hook bolts across DIN 536 and QU rail profiles, see our Crane Rail Clip Types Comparison Guide →
To meet diverse engineering demands and foundation environments, we engineered two primary fastening systems. Depending on your project, you can explore:
👉 [ Welded Rail Clips]: Maximum lateral load capacity for heavy-duty applications (e.g., port terminals and steel mills).
👉 [ Bolted Rail Clips]: Ideal for light rail installation and easy maintenance during standard operations.
Key Functions of a Rail Fastening System
Transfer Lateral Forces: Safely distribute the massive side thrusts from the crane wheels into the supporting structure.
Minimize Pad Creep: Secure the rail tightly in the lateral direction to prevent the rubber pad from shifting out of place.
Apply Vertical Compression: Provide the exact downward force needed to compress the pad seals, preventing water and debris from entering the rail base.
⚠️ The Cost of the Wrong Choice: An incorrect clip selection or poor-quality casting can lead to expensive consequences: unexpected production shutdowns, irregular wear on crane wheels, or catastrophic damage to the supporting base. To avoid these risks, review our rail clip type comparison guide → for profile-specific clip selection.
Two Systems. One Standard of Excellence.
Because every industrial environment is unique, there is no one-size-fits-all solution. The choice of clip depends on your foundation type, load capacity requirements, and installation conditions. To meet these diverse engineering demands, Forgesail has developed two primary fastening systems:
Advanced Hot-Forging Technology
The Process: Instead of standard sand casting, our heavy-duty clips are manufactured using a high-pressure hot-forging process.
The Benefit: This aligns the internal grain structure of the steel, completely eliminating internal porosity and microscopic flaws. The result is a fastening component with superior tensile strength and exceptional resistance to metal fatigue, capable of withstanding massive, repetitive lateral impacts from crane wheels.
Integrated Vulcanized Rubber Nose
The Process: We utilize an advanced thermal vulcanization process to chemically bond the nitrile rubber (NBR) nose directly to the steel clip.
The Benefit:
1. Shock and Vibration Absorption: Cranes generate massive vibrations and impact forces when they move or lift heavy loads. The rubber nose acts as a cushion, absorbing these shocks and preventing them from damaging the concrete foundation or the clip itself.
2. Dynamic Clamping Force: When a heavy crane passes over, the steel rail naturally bends and flexes like a wave. A rigid all-steel clip would quickly loosen. The rubber nose, acting like a stiff spring, compresses and expands, maintaining a constant, tight downward pressure on the rail base even when it moves.
3. Prevents Metal-to-Metal Wear: By placing a rubber barrier between the steel clip and the steel rail, it eliminates direct metal-to-metal friction. This prevents “fretting wear” (scratching, grinding, and rusting) on the rail base, significantly extending the lifespan of both the track and the fasteners.
4. Tolerance Compensation: Steel rails are not always 100% perfectly flat. The rubber tip can compress slightly to accommodate minor unevenness, manufacturing tolerances, or slight track misalignment.
5. Noise Reduction: By damping the vibrations and eliminating direct steel-on-steel contact, rubber nose clips help reduce the overall operational noise of the crane system.
In short, a rubber nose clip turns a rigid, easily loosened fastening system into a flexible, dynamic system that protects the rail, reduces maintenance, and extends the life of the entire crane rail system.
Wedge-Shaped Self-Locking Mechanism
The Process: Our clips are machined with a precise geometric wedge design and an interlocking base structure.
The Benefit: Once torqued to specification, the clip essentially “locks” itself against the rail. This ingenious design automatically compensates for rail tolerances and prevents the fastening system from loosening over time, drastically reducing your maintenance downtime.
Heavy-Duty Anti-Corrosion Treatment
The Process: Depending on your project’s environmental rating, our clips undergo rigorous surface treatments, including hot-dip galvanizing, Dacromet coating, or industrial epoxy painting.
The Benefit: Our fastening systems are engineered to survive highly corrosive environments, such as coastal port terminals, chemical plants, and extreme desert conditions, ensuring a long, maintenance-free service life.
Recommended rail clips, pads and bolts by rail type
| Rail Type | Standard | Rail Base Width | Weight (kg/m) | Recommended Clip | Rail Pads | Bolt Specs | Side Load [kN] | Installation Method | Drawing |
|---|---|---|---|---|---|---|---|---|---|
| A100 | DIN 536 | 200 | 74.3 | 3120 | MK5-195 | M20 | 85 | Bolted Clip | A100 clip configuration (PDF) |
| A150 | DIN 536 | 220 | 150.3 | 9220 | MK5-215 | M20 | 255 | Welded Clip | A150 clip configuration (PDF) |
| A55 | DIN 536 | 150 | 31.8 | 3116 | MK5-147 | M16 | 60 | Bolted Clip | A55 clip configuration (PDF) |
| ASCE 70 | ASCE | 117.5 | 34.7 | 7112 | MK5 | M16 | 75 | Welded Clip | ASCE 70 clip configuration (PDF) |
| ASCE 80 | ASCE | 127 | 39.7 | 3116 | MK5-118 | M16 | 60 | Bolted Clip | ASCE 80 clip configuration (PDF) |
| JIS-30-A kg | JIS E 1103 | 108 | 30.1 | 3112 | MK5-98 | M12 | 30 | Bolted Clip | JIS-30-A kg clip configuration (PDF) |
| JIS-50 kg | JIS E 1101 | 127 | 50.4 | 7220 | MK5-118 | M20 | 300 | Welded Clip | JIS-50 kg clip configuration (PDF) |
| P15 | GB 11264 | 79.37 | 15.2 | 3112 | MK2 | M12 | 30 | Bolted Clip | P15 clip configuration (PDF) |
| P38 | GB 2585 | 114 | 38.73 | 3116 | MK5 | M16 | 60 | Bolted Clip | P38 clip configuration (PDF) |
| P60 | GB 2585 | 150 | 60.64 | 3120 | MK5 | M20 | 85 | Bolted Clip | P60 clip configuration (PDF) |
| QU100 | YB/T 5055 | 150 | 89 | 3124 | MK5 | M24 | 150 | Bolted Clip | QU100 clip configuration (PDF) |
| QU80 | YB/T 5055 | 130 | 63.69 | 3120 | MK5 | M20 | 85 | Bolted Clip | QU80 clip configuration (PDF) |
| UIC54 | UIC 860 / EN 13674 | 140 | 54.77 | 3116 | MK5-134 | M16 | 60 | Bolted Clip | UIC54 clip configuration (PDF) |
| UIC60 | UIC 860 / EN 13674 | 150 | 60.21 | 3116 | MK5 | M16 | 60 | Bolted Clip | UIC60 clip configuration (PDF) |
Frequently Asked Questions (FAQs)
How do I choose between welded and bolted crane rail clips?
The choice depends on your project's load capacity and installation environment. Welded clips offer the highest lateral load resistance and are ideal for heavy-duty applications like port cranes and steel mills where maximum stability is required. Bolted clips are perfect for standard operations or sites where on-site welding (hot work) is prohibited, offering easier installation and faster maintenance.
What rail standards are your fastening systems compatible with?
Forgesail rail clips are engineered to accommodate a wide range of global standards. Our adjustable clips perfectly match European standard (DIN 536), American standard (ASCE/ASTM), Chinese standard (QU / YB), and UIC rails. When you submit an inquiry, our engineers will help you select the exact clip model that matches your rail profile and base width.
What is the recommended tightening torque for your rail clips?
The required tightening torque varies depending on the specific clip model and the grade of the bolts used (typically Grade 8.8 or 10.9). Thanks to our wedge-shaped self-locking design, once the correct torque is applied, the clip will resist loosening from vibrations. Please contact us to request the Installation Manual & Torque Chart for your specific model.
Can your rail clips withstand extreme environments, such as coastal ports or desert solar plants?
Absolutely. Our clips undergo heavy-duty anti-corrosion treatments, including hot-dip galvanizing and Dacromet coating, to resist saltwater and chemical corrosion. Furthermore, the integrated vulcanized rubber nose (NBR) is highly resistant to extreme temperature fluctuations and UV exposure, ensuring a long service life in harsh outdoor conditions.
Can you provide customized rail clips and fastening products?
Absolutely. We specialize in custom-engineered solutions tailored to your specific project requirements. Depending on your application environment, we can select specific raw materials, such as Q355B high-strength structural steel. We also offer customized anti-corrosion surface treatments—including hot-dip galvanizing, electro-galvanizing, and Dacromet coatings—to combat different environmental challenges. Furthermore, if your project has extremely strict installation standards or unique fastening needs, our engineering team can completely custom-design the clip's geometry and dimensions specifically for you.
Compatible replacement rail clips for existing crane rail fastening systems
Most crane rail installations use a proprietary fastening system: a particular clip body, pad thickness and bolt pitch, usually chosen by the crane builder when the track went in. Buying spares through that original channel is slow and expensive, and swapping the whole system means re-drilling the rail base or replacing the base plates.
ForgeSail makes compatible replacement rail clips, pads, base plates and bolts that match the dimensions of the system already on your crane rail, so the rail seat, hole pattern and side-load capacity stay as they are. We do not sell OEM parts, and we are not affiliated with, endorsed by or sponsored by any crane builder or rail fastening manufacturer whose components our parts replace.
Custom parts for any rail profile or fastening system
ForgeSail runs its own plant and keeps a design and engineering team in house, so we are not tied to a fixed catalogue. Send the rail profile or the fastening detail and we make the parts to match: welded clips, drilled (bolt-on) clips, rail pads, plus base plates, bolts and anchors on the same order.
That covers the awkward cases: non-standard rail sections, fastening systems that are no longer supported, mixed-spec track, and one-off port or bridge projects. Quotes come from your drawing instead of a catalogue, and we keep that drawing on file so repeat orders match the first delivery.
Repair and maintenance parts: rail clips and bolts
Most maintenance work on a crane rail does not need a complete new fastening system. It needs the parts that bend, wear out or go missing: the rail clips that press the rail onto its base, and the bolts, washers and anchors that hold them down. Those are the parts we build to order most often, for any rail model or system configuration, and we take small repair quantities as well as full container loads.
3D fit simulation before we cut material
Send three things and we model the part before anything is cut, so a bad fit does not turn up during the maintenance window:
- The drawing — the original fastening drawing, a dimensioned sketch, or a drawing of the part that failed
- Site photos — the installed assembly, the worn or damaged part, and how the rail sits on its base plate
- The model or reference — the rail profile (DIN 536 A100, QU100, ASCE 85 …), the fastening reference, or the part number being replaced
Our design team builds a 3D model of the clip and bolt inside the assembly, checks the fit and interference against the rail base, the pad thickness and the existing hole pattern, and sends you the model with a dimensional summary. Quoting and machining start once you confirm it. The drawing stays on file, so repeat maintenance orders match the approved part.
Replacement clips for proprietary fastening systems
Whichever system you have, the match comes down to two measurements: the rail base width and the side load required per metre of track. Send the fastening reference, a drawing or a photo with those two numbers and we will tell you which clip family fits:
- European wedge-clip systems — bolt-on or weld-on clip bodies with a wedged grip on the rail base (our 3116 / 3120 families)
- Wide-base clip systems — larger clip bodies for wide rail bases and higher side loads (7112 / 7220 families)
- Metric-pitch clip systems — clips made to DIN, GB and JIS rail profiles
- Replaceable-nose designs — where the nose wears before the body, so only the nose is renewed
- Shipyard and container terminal cranes — 9220 family for the highest wheel loads
- Matching consumables — MK2 / MK5 series rail pads (NBR, EPDM, steel-cored) and M12–M20 bolts with hot-dip galvanizing, Dacromet or epoxy coating
System references we regularly match: we work from the reference written on the drawing, not from a brand name, and it is the rail section underneath that decides the match. These are the standard families we are asked to match most often:
- DIN 536 A45–A150 — European crane rails; bolt-on and weld-on wedge clips with flat or profiled base plates
- GB/T 2585 QU70 / QU80 / QU100 / QU120 — Chinese crane rails with metric bolt pitches, usually M16–M24
- AREMA / ASCE 60–115 and ASTM A759 — North American crane rail sections
- JIS E 1101 50 kg and 60 kg sections — Japanese rail profiles on metric pitches
- UIC 60 / 60E1, UIC 54 / 54E1 and BS 11 — railway sections reused on heavy crane rails
- European wedge-clip and heavy-duty fastening drawings — matched on rail base width, bolt pitch and side load per metre of track
- Retired or unsupported references — where the original system is no longer catalogued and the match has to be re-measured from the clip still on the rail
Copy the reference exactly as it appears on the drawing and add the rail base width. If it is a house drawing number and not a published standard, the dimensions still tell us what we need.
Replacement clips for OEM crane rail designs
When the rail fastening detail came with the crane, the crane model or the rail drawing is the only reference you need. Give us the crane capacity, rail profile and wheel load, plus the original fastening drawing if you have it, and our engineers will confirm the equivalent clip, pad and bolt combination for the same rail seat.
- Bolt-on clips where the rail has to stay demountable
- Weld-on clips where later rail replacement is not expected
- Pads matched to the original thickness and hardness so the rail line height does not change
- Base and sole plates machined to the existing bolt pattern
Typical references we ask for: any one of the following, with the rail profile, is enough for us to start a match:
- Crane data — lifting capacity, wheel load, wheelbase and crane classification (ISO 4301, FEM or CMAA)
- Rail layout or fixing drawing — the steelwork drawing or the rail fixing detail, with its drawing number and revision
- Rail standard and profile — DIN 536 A45–A150, GB/T 2585 QU70–QU120, AREMA / ASCE 60–115, ASTM A759, JIS E 1101, UIC 60 / 60E1 or BS 11
- Fastening reference — the clip part number, the pad reference, or the bolt diameter and pitch
- Track tolerance reference — ISO 12488-1 for wheel and track tolerances, or the crane standard named in the original specification
- Corrosion environment — coastal, indoor or washdown, which sets the coating: hot-dip galvanizing to ISO 1461 or a paint system to ISO 12944
If none of those documents exist any more, three measurements are enough: rail base width, rail height and the hole pitch of the existing plate. A photo of the installed clip with a tape measure across the rail base usually identifies the family on its own.
What we supply as compatible replacements
| Component | ForgeSail range | How the match is confirmed |
|---|---|---|
| Bolted rail clips | 3112, 3116, 3120 families; M12–M20 bolts | Rail base width + side load + bolt pitch from your drawing |
| Welded rail clips | 3116, 7112, 7220 welded variants | Weld geometry and rail base width, checked against the original clip |
| Heavy-duty clips | 7220, 9220 families | Side load per metre and wheel load from the crane data sheet |
| Rail pads | MK2, MK5 and MK5-98…MK5-215 profiles; NBR, EPDM, steel-cored | Pad thickness, hardness, hole pattern and rail profile |
| Sole plates / base plates | Machined to drawing | Existing bolt pattern and plate thickness measured from your rail |
| Bolts, washers, anchors | M12, M16, M20 in 8.8 grade | Thread, length and coating grade |
How to confirm compatibility before you order
- Send the fastening reference, the crane model, or the part number of the component you are replacing.
- Add a drawing, a photo, or three measurements: rail base width, rail height and the hole pitch of the existing plate.
- We reply with the matching ForgeSail clip family, the dimensional confirmation and the coating option for your environment.
- For repeat orders and full rail lengths we supply a trial quantity first, then match production to the approved sample.
Send your rail clip drawing for a match
Common questions about compatibility
Are your rail clips compatible with the fastening system already on my crane rail?
They can be, once the dimensions are checked. Our clips work on the same principle as proprietary systems: a wedged body that grips the rail base, a matching pad and a defined bolt pitch, all produced to your reference or drawing. Send the reference with the rail base width and we will confirm the match in writing before production. We do not manufacture or supply OEM parts for any fastening brand.
Can you supply the whole fastening scope instead of one clip type?
Yes. We make the clips, the rail pads, the sole plates or base plates and the bolts, so one order can cover a complete crane rail installation. That avoids mixing components from different suppliers and keeps the side-load capacity consistent along the track.
What information do you need to quote a replacement clip?
Rail type and base width, the side load or wheel load, the bolt size and the coating you need. If all you have is a photo of the installed clip, send that with the rail profile name, and our engineers will check the rest against the drawings.
Related pages: crane rail clips, rail pads, sole plates and base plates, fastening bolts, crane rail profiles.
Note on references: project documents and older drawings often name the fastening system or the crane builder that was used originally. ForgeSail manufactures compatible replacement components matched to those drawings and is not affiliated with, endorsed by or sponsored by any crane or rail fastening manufacturer. Manufacturer names that appear in customer documentation, quotes or purchase orders are used only to identify the item being replaced and remain the property of their respective owners.
Production workshop and quality inspection
