What is QU100 Crane Rail
Oct 14, 2025
QU100 crane rail is an industrial rail product specifically designed for medium-sized crane track systems, with cross-section and material optimized to meet the demands of frequent start-stop operations and medium loads. The rail head width and web thickness are reasonably designed to effectively distribute wheel loads within limited space, reduce track wear and stress concentration, and ensure long-term track stability.
| Classification | SIZE(mm) | theoretical weight | |||||||||
| height | bottom width | head width | waist depth | ||||||||
| Crane rail | QU70 | 120 | 120 | 70 | 28 | 52.8 | |||||
| QU80 | 130 | 130 | 80 | 32 | 63.69 | ||||||
| QU100 | 150 | 150 | 100 | 38 | 88.96 | ||||||
| QU120 | 170 | 170 | 120 | 44 | 118.1 | ||||||
QU100 rail is a special rail designed for lifting machinery, implementing the Chinese national standard GB/T 5055-2014 'Crane Rails'. In India, QU100 is also known as ISCR70, ISCR80, ISCR100 and ISCR120 crane rails. In Russia, it is known as KP70, KP80, KP100 and KP120 crane rails.
In terms of material, QU100 is made of high-manganese steel or high-quality alloy steel, with heat treatment and quenching processes applied to strengthen the surface, providing excellent fatigue resistance and wear performance. The overall rail structure is precisely calculated to withstand repeated loads and dynamic impacts, while minimizing the risk of local deformation, thereby extending track service life.
| Steel Grade | C(%) | Si | Mn | Cr | V | P | S | Tensile Strength (Rm/MPa) |
| U71Mn | 0.65~0.76 | 0.15~0.58 | 0.70~1.40 | – | – | ≤0.035 | ≤0.030 | ≥880 |
| U75V | 0.71~0.80 | 0.50~0.80 | 0.75~1.05 | – | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥980 |
| U78CrV | 0.72~0.82 | 0.50~0.80 | 0.70~1.05 | 0.30~0.50 | 0.04~0.12 | ≤0.035 | ≤0.030 | ≥1080 |
QU100 rails are suitable for a variety of medium-load industrial track systems, including port cranes, overhead cranes, and in-plant logistics transport lines. Their design balances load-bearing capacity and durability, ensuring smooth equipment operation and reducing maintenance frequency caused by insufficient rail performance.
GNEE RAIL offers a wide range of crane rail specifications, covering different load capacities and industrial applications. In addition, we provide rail selection consultation, customized processing services, and full technical support, ensuring that every track system meets the requirements for smooth equipment operation and long-term reliability. Customers can directly contact GNEE RAIL to obtain tailor-made crane rail solutions.
