What are the characteristics of DIN A75 steel rail?
DIN A75 steel rail is a heavy-duty crane rail designed to DIN 536 P1:1991 standards, featuring a weight of 56.2 kg/m, a 75mm head width, 85mm height, and a 200mm base. Engineered for high-load, heavy-duty overhead crane runways and gantry cranes, it is typically manufactured from high-strength 900A(U71Mn) steel to ensure exceptional wear resistance and structural integrity.
Key Characteristics of DIN A75 Rail
- Dimensions & Profile: Specifically designed with a wide 200mm base for maximum lateral stability. It has a 75mm head width, 85mm height, and a 45mm thick web.
| Type of raíl | Standard | Dimensiones mm | Sección S | Masa m | ||||
|---|---|---|---|---|---|---|---|---|
| H | B | C | E | cm² | kg/m | |||
| NORMA EUROPEA DIN 536 P1:1991 | ||||||||
| A75 | DIN 536 | 85 | 200 | 75 | 45 | 71,60 | 56,20 | |
- Material Strength: Manufactured from high-quality steel (often U71Mn/900A) designed to resist deformation and high-pressure wear.
| Mechanical Property | Chemical Composition (%) | |||||||||||||
| U71Mn | Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | Cr | Ni | Cu | ||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | |||||||||
| ≥390 | ≥40 | ≥880 | 9% | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | ≤0.030 | ≤0.030 | ≤0.250 | ≤0.250 | ≤0.250 | |||
- Load Capacity: Suitable for heavy industrial environments, including ports, shipyards, and steelworks with high wheel loads (50-100+ tons).
- Performance: Offers high tensile strength (≥ 880 N/mm²) and good durability.
- Applications: Ideal for gantry cranes, overhead bridge cranes, and automatic stacking systems in warehouses.
- Installation: Usually installed with flexible clips like M120 or M165, which assist with stability and absorb vibrations.
Why choose the A75 rail profile?
The A75 rail profile (DIN 536) is chosen for its superior lateral stability and high load-carrying capacity (56.2 kg/m) in heavy-duty industrial applications, such as medium-scale ports, steelworks, and logistics centers. It balances strength and cost-efficiency, featuring a 200 mm wide base that prevents deformation while supporting 50–100 ton cranes.
Why Choose A75 Rail Profile:
- Exceptional Stability: With a wide 200 mm base and a 75 mm head, A75 crane rails provide excellent lateral stability.
- High Load Tolerance: Optimized for heavy, continuous operations in manufacturing and shipping.
- Reduced Deformation: Its robust structure ensures long-term performance under high vertical and lateral forces.
- Versatility: Suitable for diverse environments including ship-to-shore cranes (STS), rail-mounted gantries (RMG), and overhead cranes in factories.
- Durability: Made with high-strength materials (often U71Mn) that offer high wear resistance, making them ideal for heavy use in steelworks and ports.
- Ease of Installation: A75 rails can be easily secured to concrete or steel supports using clips and rubber pads.
DIN 536 A75 Rail Specifications and Dimensional Data
The dimensions of a75 crane rail are critical for the design of the entire runway system, including the selection of the wheel tread and the fastening hardware. According to the DIN 536 A75 Rail Specifications, the rail has a weight per meter of 56.2 kg, providing a heavy, stable track for medium-duty crane systems and heavy-duty industrial use alike. Accurate A75 Rail dimensions are necessary to calculate the clearance for the crane's wheel flanges and to ensure the correct fit of fishplates at the joints.
When reviewing the DIN 536 A75 Rail Dimensions Drawing, focus remains on the head width and base width to determine the load distribution capacity. The 75mm head provides a generous contact patch, while the 200mm base allows for secure anchoring via sole plates and adjustable clips. Standard DIN 536 Standard A75 rail length is typically 12 meters, but custom lengths can be provided to minimize the number of joints in long A75 runway sections.
| Technical Specification | A75 Profile Detail |
| Head Width | 75 mm |
| Base Width | 200 mm |
| Total Height | 85 mm |
| Web Thickness | 32 mm |
| Sectional Weight | 56.2 kg/m |
| Material Grade | 900A/700A |
FAQ
- What is the benefit of the A75 rail profile compared to standard railway rails?
Standard transport rails are tall and narrow, which makes them prone to tilting under the lateral forces of a crane. The A75 rail dimensions feature a wide 200mm base and a low height of 85mm, providing a much more stable foundation that prevents the rail from twisting and reduces the risk of derailment in heavy duty crane rail applications.
- Does the A75 rail require specific surface treatment for coastal shipyards?
In coastal or high-humidity environments, we recommend a specialized Surface Treatment or the use of anti-corrosion coatings. Because of the A75 rail material's high carbon content, salt air can cause pitting; applying a protective layer during the End Processing & Finishing stage extends the service life and maintains the smooth travel surface required for overhead cranes.
- Can GNEE RAIL provide pre-drilled A75 steel rail sections?
Yes, our facility specializes in Pre-drilling and Custom Drilling Services. We can machine the A75 profile to match your existing bolt patterns or provide precise holes for fishplates and hook bolts, ensuring that the A75 tracks are ready for immediate installation upon arrival at your project site.
- What is the correct way to secure the DIN 536 A75 rail to a steel beam?
The A75 rail should be secured using adjustable clips/A75 crane rail clips with synthetic rubber "noses." These clips provide the necessary clamping force while allowing for longitudinal thermal expansion. Using these clips alongside high-elasticity pads/rail pads reduces the dynamic load on the sole plates and extends the life of the entire runway system.
Get a Quote in 24 Hours
To obtain technical CAD drawings or to contact us for a professional solution, please submit your specific runway layout and load data. GNEE RAIL provides comprehensive engineering support, ranging from the selection of A-series Rail to the delivery of integrated fastening kits including clips/A75 crane rail clips, fishplates, and sole plates. Contact us today to acquire a factory-direct quotation and material test reports tailored to your specific project needs.
