Crane Rail Hook Bolt
Crane rail hook bolt is a key high-strength fastener specially used for anchoring crane operating rails. Crane rails installed on beams or channels are usually fixed with J hook bolts. It firmly fixes the rail system to the concrete foundation or steel structure foundation, ensuring that the rail maintains precise position and stability under the dynamic load of the crane, which is the basic guarantee for the safe operation of the crane. The fixing method of the hook bolt is to drill holes on the rail network, the hole spacing is usually 24 inches, and the holes are drilled in pairs with a hole spacing of 3 to 4 inches. Hook bolts are individually designed according to the rail section and beam size...
- Product Introduction
A specialized attaching element used to fasten crane rails to steel plates, sleepers, or foundation frames is the crane rail hook bolt, sometimes referred to as a rail hook bolt or crane track bolt. Our crane rail hook bolts, produced by Wuxi Lanling Railway Equipment Co., Ltd., are designed for heavy-duty use in industrial track systems, overhead cranes, gantry cranes, and port cranes.
For stable and vibration-resistant rail positioning under dynamic loads, each hook bolt has a precisely designed "J" or "L" end that latches firmly around the crane rail flange.
Technical Specifications
Lanling provides the following crane rail hook bolts. We provide customized services for customers: raw materials, sizes, and surface treatments can be customized.
|
Specification |
Parameters |
|
Dimensional Specifications |
Diameter Range: M20, M24, M30, M36 (common) |
|
Grade Specifications |
Strength Grade: Grade 8.8, 10.9 (standard); 12.9+ for extreme loads |
|
Applicable Standards/Rails |
Rail Types: QU70, QU80, QU100, QU120 (bolt spacing matches rail base width) |
|
Material & Surface Treatment |
Base Material: High-strength alloy steel (e.g., ASTM A449, A354 BD; EN 14399 HV) |
When ordering hook bolts, please specify:
- Rail size
- Beam or channel
- Hook bolt diameter
- Quantity required
Performance Of Crane Rail J Hook Bolt
|
Performance |
Technical Parameters |
|
Pull-out Strength |
– M24 Bolt: ≥110 kN (C30 concrete) |
|
Shear Resistance |
– M24 Bolt: ≥85 kN |
|
Fatigue Life |
2 million cycles (under ±50 MPa dynamic load) |
|
Pre-tension Force |
– M24 Bolt (10.9 Grade): 225 kN |
|
Corrosion Resistance |
– Standard: Hot-dip galvanized (salt spray ≥500 hours) |
|
Temperature Range |
– Standard: -22℉ to +302℉ |
Product Applications
Crane Rail Hook Bolts are widely used in:
Overhead and gantry crane track systems
Port and container yard rail systems
Steel mill and power plant rail installations
Heavy-duty industrial workshops
Metro depots and maintenance facilities
Their robust structure ensures secure clamping, reduced vibration, and safe operation under repetitive loading conditions.
Installation And Maintenance Of J Hook Bolt
Installation
Preparation: Check the bolt specifications, clean the installation surface of oil and residue.
Positioning: Mark the hole position according to the drawing, the drilling depth is 10~20mm longer than the bolt, the hole diameter is 2~3mm larger, and the hook head hooks the embedded part at the bottom of the track beam.
Tightening: After the bolt is inserted, fix it with a pressure plate, tighten the nut symmetrically 2~3 times, and expose 2~3 threads.
Maintenance
Daily inspection: Check the looseness, wear, rust prevention and pressure plate gap of the bolt every week.
Regular maintenance: Re-tighten the nut every quarter (according to the designed torque), and apply anti-rust paint after rust removal.
Abnormal handling: Bolts with thread slippage and deformation need to be replaced immediately, and embedded holes with wear are repaired with grouting materials.
Annual inspection: Magnetic particle inspection is performed every year to detect internal cracks in the bolts.
Why Choose Lanling Railway
Quality Control
At Wuxi Lanling Railway Equipment Co., Ltd., every crane rail hook bolt undergoes strict quality inspection for hardness, tensile strength, thread accuracy, and coating thickness.
We implement ISO 9001:2015 quality management system and ensure compliance with AREMA, DIN, and GB standards for international railway and industrial rail systems.
Packaging & Transportation
- Moisture-proof performance reaches 99% when a five-layer reinforced protective packaging method is used.
- Every box load-bearing test weighs more than 1000 kg.
- Transportation vibration can be reduced by 90% with a special shockproof liner.
- Every product has an RFID smart traceability sticker that can be tracked around-the-clock.
Our Strength
With over 30 years of professional manufacturing experience, Wuxi Lanling Railway Equipment Co., Ltd. has become a trusted supplier of rail fastening systems and components such as elastic clips, hook bolts, fish plates, and rail pads.
We combine advanced forging, machining, and coating technologies to deliver reliable, high-performance products to customers in Asia, Europe, the Middle East, and North America.
We offer full technical support, installation guidance, and product warranty for every customer. Our engineering team can assist with rail layout design and fastening solutions for complex crane systems.
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