What are the Dimensions of the CR73 Rail?
The CR73 rail is a Japanese-standard heavy-duty crane rail weighing approximately 73.3 kg/m. Its standard dimensions include a rail height of 135 mm, a head width of 140 mm, a base width of 100 mm, and a web thickness of 32 mm. These dimensions are specifically engineered to withstand high wheel loads, repeated impact forces, and continuous crane operations while maintaining excellent track stability.
CR73 Rail Profile Drawing:
The table below summarizes the standard dimensions and key technical specifications of the JIS CR73 steel rail. These values provide the essential reference for crane runway design, rail replacement, fastening system selection, and project specification.
| Model | DIMENSION | Weight | Material | Length | |||
| A(mm) | B(mm) | C(mm) | t(mm) | (KG/M) | (m/PC) | ||
| JIS 15KG | 42.86 | 79.37 | 79.37 | 8.33 | 15.2 | 55Q | 9-10 |
| JIS 22KG | 50.8 | 93.66 | 93.66 | 10.72 | 22.3 | 55Q | 9-10 |
| JIS 30A | 60.33 | 107.95 | 107.95 | 12.3 | 30.1 | 55Q | 9-10 |
| JIS 37A | 62.71 | 122.24 | 122.24 | 13.49 | 37.2 | U71Mn | 10-25 |
| JIS 50N | 65 | 153 | 127 | 15 | 50.4 | U71Mn | 10-25 |
| CR 73 | 100 | 135 | 140 | 32 | 73.3 | U71Mn | 10-12 |
| CR 100 | 120 | 150 | 155 | 39 | 100.2 | U71Mn | 10-12 |
The CR73 rail features a heavy-duty crane rail profile engineered for high-load industrial applications. The wide rail head provides a larger contact surface for crane wheels, while the thick web and stable base structure improve resistance to bending, shear forces, and lateral loads during frequent crane acceleration, braking, and load handling operations.
CR73 Steel Rail Material：
| 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 | |
Accurate CR73 rail dimensions are essential for crane runway design, rail replacement, fastening system compatibility, and wheel load calculations. Selecting the correct rail profile helps ensure proper crane alignment, extends rail service life, and minimizes maintenance requirements.
Manufactured in accordance with Japanese Industrial Standards (JIS), the CR73 rail is widely used for overhead crane and gantry crane runways in container ports, steel plants, shipyards, mining operations, and other heavy industrial facilities. GNEE RAIL supplies JIS-standard CR73 rails for projects worldwide, along with matching rail fastening systems, fishplates, bolts, technical support, export documentation, and global shipping services to provide a complete and efficient procurement solution.
B/L - GNEE RAIL Export of CR73 Crane Rails to Vietnam
GNEE RAIL CR73 Rail Inventory
GNEE RAIL CR73 Rail Identification Marking
GNEE RAIL CR73 Rail Port Unloading
Frequently Asked Questions (FAQ)
Q1: What standard does the CR73 crane rail comply with?
The CR73 crane rail is manufactured according to Japanese Industrial Standards (JIS), primarily referenced under JIS E 1103 for crane rails. It is different from DIN 536 A-series crane rails, which follow European standard specifications and have different profile dimensions and sectional designs.
Q2: What are the dimensions and weight of CR73 crane rail?
The JIS CR73 crane rail has a nominal weight of 73.30 kg/m. Its main dimensions include a rail height of 135 mm, head width of 140 mm, base width of 100 mm, and web thickness of 32 mm. These dimensions are designed for heavy-duty crane runway applications requiring high load capacity and structural stability.
Q3: What applications are suitable for CR73 crane rail?
CR73 rail is commonly used for heavy-duty crane runway systems in container ports, steel plants, shipyards, mining facilities, and large industrial workshops. It is suitable for overhead cranes, gantry cranes, and other lifting systems operating under high wheel loads and frequent movement conditions.
Q4: Can GNEE RAIL supply CR73 rails in customized lengths?
Yes. GNEE RAIL can supply CR73 rails in standard or customized lengths according to project requirements. We also provide supporting services including rail cutting, end machining, matching fastening components, quality documentation, and export logistics support.
Q5: What steel grades are available for CR73 crane rail?
The steel grade of CR73 rail depends on project requirements and manufacturing specifications. Common materials include wear-resistant rail steels such as U71Mn. GNEE RAIL can provide material certificates (MTC) and quality inspection documents to verify chemical composition and mechanical properties.
