9220 Welded Rail Clip
Product Overview
9220/20/45 Welded Rail Clip is a premium solution designed to secure ultra-heavy rails in the most demanding industrial environments. With a 235kN (24.6 tonnes) horizontal force capacity, this clip is ideal for heavy-duty cranes, port machinery, and mining systems. Its 20mm horizontal adjustment range and low-profile design ensure precise alignment with guide roller-equipped cranes, while the self-tightening mechanism guarantees long-term stability under extreme loads and vibrations.
Installation Instructions
Weld the clip base to supports with a 5mm throat thickness fillet weld using low-hydrogen electrodes.
Omit welding on the side closest and parallel to the rail to allow for thermal expansion.
Insert M20 captive bolt and tighten to 350 Nm torque to activate the self-locking mechanism.
Adjust rail position within the 20mm horizontal range before finalizing welds.
Inspect welds for full penetration and compliance with ISO 3834 and EN 1090 standards.
Maintenance Guidelines
Quarterly Inspection: Check bolt tightness, rubber pad wear, and weld corrosion in high-load zones.
Rubber Pad Replacement: Replace every 3–5 years or at signs of degradation (cracking, loss of elasticity).
Corrosion Protection: Apply anti-rust coating to welds and bolt threads in harsh environments.
Applications
Ports & Terminals: Ultra-heavy container gantry cranes (e.g., QU120, GCR183 rails).
Mining & Quarries: High-load haul rails in surface and underground operations (e.g., ISCR140, MRS125 rails).
Steel Mills & Heavy Industry: Rail-mounted furnaces, ladle carriers, and heavy machinery (A150, MRS221 rails).
Shipyards: Marine cranes and rail systems for large vessel construction.
| Parameter | Value |
|---|---|
| Model | 9220/20/45 |
| Max Side Load | 235kN (24.6 tonnes) |
| Horizontal Adjustment | 20 mm |
| Bolt Specification | M20 Grade 8.8, Captive Bolt |
| Weight per Clip | 2.67 kg |
| Weld Type | 5mm Throat Thickness Fillet Weld |
| Recommended Electrodes | AWS E7018/E7028 (Low Hydrogen) |
| Minimum Assembly Width | Rail Width (F) + 160 mm |
| Components | Flange Nut, Forged Steel Clip, Vulcanized Rubber Block, Weldable Base |
Key Features
Full-perimeter welding (except rail-parallel side) with 5mm throat thickness ensures a rigid, vibration-resistant connection to support structures.
Weldable base constructed from high-strength steel for superior load distribution in extreme conditions.
Two-piece design locks securely when the Grade 8.8 bolt is tightened to 350 Nm torque, maintaining consistent clamping force over time.
Integral vulcanized rubber block reduces wear and noise:
14mm thickness for rails with pads (S model).
21mm thickness for rails without pads (H model).
Suitable for 73.3–221.4 kg/m rails across global standards:
Chinese: QU100, QU120
European: A100, A120, A150
Industrial: ISCR100–ISCR140, GCR183, MRS125–MRS221
Galvanized components and weldable steel resist corrosion in coastal, mining, and chemical industry environments.
Compatible Rail Types
| Rail Standard | Rail Weight (kg/m) | Clip with Pad (S) | Clip without Pad (H) |
|---|---|---|---|
| Chinese QU120 | 118.5 | 9220/20/45 (S) | 9220/20/45 (H) |
| European A150 | 150.3 | 9220/20/45 (S) | 9220/20/45 (H) |
| Industrial MRS221 | 221.4 | 9220/20/45 (S) | 9220/20/45 (H) |
| Industrial GCR183 | 183.06 | 9220/20/45 (S) | 9220/20/45 (H) |
| European ISCR140 | 146 | 9220/20/45 (S) | 9220/20/45 (H) |
Why Choose the 9220 Welded Rail Clip?
Extreme Load Performance: 235kN capacity for the most demanding industrial applications.
Precision Adjustment: 20mm range simplifies alignment in complex, high-precision setups.
Low Total Cost of Ownership: Welded design reduces long-term maintenance vs. bolted systems.