3124 Bolted Rail Clip
Product Overview
3124 Bolted Rail Clip is a premium solution designed to secure extra-heavy rails in demanding industrial environments. With a 125kN (12.75 tonnes) horizontal force capacity , this clip is ideal for heavy-duty cranes, port machinery, and mining systems. Its 20mm horizontal adjustment range and robust forged steel construction ensure precise alignment and long-term reliability in high-vibration or corrosive settings.
Parameter | Value |
Model | 3124/20/42 |
Max Side Load | 125kN (12.7 tonnes) |
Horizontal Adjustment | 20 mm |
Bolt Spec | M24 x 85, Grade 8.8 |
Weight per Clip | 1.25kg(with rubber pad) |
Minimum Assembly Width | Rail width (F) + 180 mm |
Components | Forged steel clip, rubber block, washer |
Key Features
Constructed from Q345 forged steel with a Grade 8.8/M24 bolt (Customizable length) , providing superior resistance to shear forces and fatigue.
Two-piece interlocking structure locks securely when tightened, minimizing lateral rail movement under dynamic loads.
Integral vulcanized rubber block applies consistent pressure to the rail, reducing noise and wear while accommodating minor thermal expansion.
20mm horizontal adjustment allows for fine-tuning during installation or track maintenance, critical for aligning guide roller-equipped cranes.
Suitable for 50–118.5 kg/m rails, including major international standards:
Chinese: QU100, QU120
European: UIC 60, UIC 70
European: A120, A150
Offers two configurations:
(S) with rubber pad: For maximum vibration dampening.
(H) without pad: For direct rail-to-support installation.
Galvanized finish and high-strength steel components ensure longevity in coastal, humid, or chemically aggressive environments.

Installation & Maintenance
Tighten Grade 8.8 bolts to 400–450 Nm using a torque wrench to ensure secure fixation .
Adjust rail position within the 20mm range before final tightening, ensuring alignment with crane guide rollers.
Align the clip with the rail and support structure.
Insert the M24 bolt from above or below (no under-access required).
Secure with a hardened washer and nut, ensuring uniform contact between the rubber block and rail.
Inspect quarterly for bolt tightness, rubber pad wear, and corrosion.
Replace worn components to maintain clamping force and vibration control.
Applications
Ports & Terminals: Securing rails for container gantry cranes and heavy-duty AGVs.
Mining & Quarries: High-load ore transport rails in underground tunnels and surface operations.
Heavy Industry: Steel mills, power plants, and automotive manufacturing facilities with extra-heavy rail systems.
Construction: Temporary rail tracks for large-scale equipment in infrastructure projects.

Compatible Rail Types
Rail Standard | Rail Weight (kg/m) | Clip with Pad (S) | Clip without Pad (H) |
Chinese QU100 | 63.6 | 3124/20/42 (S) | 3124/20/42 (H) |
European UIC 70 | 70 | 3124/20/42 (S) | 3124/20/42 (H) |
American A120 | 58.8 | 3124/20/42 (S) | 3124/20/42 (H) |
Japanese JIS60 | 59.3 | 3124/20/42 (S) | 3124/20/42 (H) |
Why Choose Gloryrail’s 3124 Bolted Rail Clip?
Unmatched Load Capacity: Handles the heaviest rail applications with 125kN lateral force resistance.
Precision Adjustability: 20mm horizontal adjustment simplifies alignment in complex installations.
Cost-Efficient Longevity: Durable materials reduce maintenance and replacement costs over the product lifecycle.