CR73 Rail
CR73 rail is a special crane rail profile commonly used in Japanese industrial crane systems, designed to meet the rigorous demands of heavy-duty lifting and material handling systems. Compliant with JIS E 1103-93/JIS E 1101-93 standards and crafted from U71Mn steel, it combines exceptional strength with precise dimensional accuracy, making it a trusted choice for supporting cranes, heavy machinery, and industrial lifting operations. Its robust build ensures stability under high loads, delivering consistent performance in challenging environments.
Every rail delivered with traceable quality assurance
CR73 Rail Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Rail Size | CR73 | Rail Type | Crane Rail |
| Standard | JIS E 1103-93/JIS E 1101-93 | Material | U71Mn |
| Rail Height | 135 mm | Head Width | 100 mm |
| Bottom Width | 140 mm | Web Thickness | 32 mm |
| Weight | 73.30 kg/m | Length | 12 m or customized |
For custom lengths or higher-strength materials, please contact our team for tailored production solutions.
CR73 Rail Material Parameter
U71Mn steel forms the core of CR73 steel rail, delivering the mechanical toughness and chemical stability needed for heavy-duty industrial use.
| U71Mn | Mechanical Property | Chemical Composition(%) | |||||||||
| Yield strength | Tensile strength | Elongation | Hardness | C | Si | Mn | S | P | |||
| MPa | kg/mm² | MPa | kg/mm² | min | HBW | ≤ | ≤ | ||||
| — | —- | ≥880 | — | 9% | 260 | 0.65-0.76 | 0.15-0.35 | 1.10-1.40 | 0.030 | 0.030 | |
Applications of CR73 Rail
CR73 rails (theoretical weight approximately 73 kg/m) are classified as medium- to heavy-duty crane rails. They are primarily designed to withstand high wheel loads, resist impact, and minimize wear. As a result, they are mainly used in industrial and logistics applications that involve frequent, heavy-load lifting operations.
Key Application Categories
1. Port and Terminal Heavy Equipment
- Equipment: Rail-mounted container gantry cranes (RMG), gantry cranes (STS) trolley travel mechanisms, and port portal cranes.
- Application Characteristics: Faced with high-frequency starts and stops and enormous container lifting loads, the rails must possess extremely high compressive strength and wear resistance.
2. Heavy Industry Plants & Workshops
- Equipment Used: Overhead cranes and large gantry cranes in metallurgical plants, shipyards, and heavy machinery manufacturing facilities.
- Scenario Characteristics: Handling extremely heavy materials such as steel coils and large castings; operating environments may involve high temperatures or high dust levels, requiring rails with dimensional stability and strong resistance to deformation.
3. Mining & Quarrying
- Equipment Used: Travel tracks for large bucket wheel excavators, spoil loaders, and heavy-duty ore handling equipment.
- Scenario Characteristics: Harsh environments with extreme loads and intense impacts; the CR73’s wide rail head design effectively disperses stress and extends service life.
4. Logistics Hubs & Railway Yards
- Equipment Applications: Tracks for container yard cranes, straddle carriers, and heavy-duty cargo handling lines.
- Scenario Characteristics: Tracks must maintain high precision under long-term, high-load operation to ensure the smooth operation of automated equipment.
5. Large Infrastructure & Bridge Construction
- Equipment Used: Traveler and support rails for bridge erectors and large tower cranes.
- Scenario Characteristics: As temporary or semi-permanent heavy-load support foundations, these tracks must be easy to install and possess sufficient structural rigidity.
Advantages of Our CR73 Rail
Superior Load Resistance
High-strength U71Mn steel ensures resistance to deformation under extreme loads, maintaining structural integrity.
Global Compatibility
Strict JIS compliance guarantees compatibility with global crane systems, simplifying cross-border project integration.
Minimized Operational Wear
Precise 135mm height and 140mm base width ensure tight fit with crane wheels, reducing operational wear effectively.
Enhanced Structural Rigidity
32mm thick web boosts rigidity, extending service life in high-frequency lifting and movement applications.
CR73 Equivalent & Similar Crane Rail Profiles
CR73 rail is a 73.3 kg/m special crane rail profile widely used for medium and heavy-duty crane runway systems. Depending on project requirements, several crane rail profiles with similar weight ranges may be considered as alternatives. However, the replacement should always be verified based on rail dimensions, crane wheel load, and runway design.
| Rail Profile | Standard / Specification | Weight (kg/m) | Similarity to CR73 | Typical Applications |
|---|---|---|---|---|
| A75 Crane Rail | DIN 536 | 74.37 | Closest in weight and application range | Overhead cranes, gantry cranes, industrial crane runways |
| QU70 Crane Rail | YB/T 5055 | 52.8 | Similar crane rail category but lighter | Workshops, warehouses, medium-duty cranes |
| QU80 Crane Rail | YB/T 5055 | 88.96 | Similar load capacity range, slightly heavier | Heavy-duty gantry cranes, ports, industrial plants |
| CR100 Crane Rail | JIS-related / supplier specification | 100.2 | Same profile family, higher capacity | Heavy-duty cranes, ports, steel plants |
CR73 Rail Custom Processing Services
Critical Parts for a Complete CR73 Rail System
Precision-engineered accessories that keep your tracks aligned, secure, and efficient.
Rail Clips
Securely fasten rails to sleepers, maintaining gauge stability under dynamic loads.
Fish Plates
Connect rail ends seamlessly, ensuring smooth transitions and load distribution.
UIC54 Rail
UIC-standard 54kg/m rail for secondary lines, durable and cost-effective.
UIC60 Rail
High-strength 60kg/m UIC rail for main lines, ideal for high-speed/heavy transport.