W120 Welded Rail Clip
Product Overview
W120/21 Welded Rail Clip is a premium solution designed to secure heavy rails on narrow supports in the most arduous industrial environments. With an impressive 185kN (18.5 tonnes) horizontal force capacity, this clip is ideal for cranes, port machinery, and heavy-duty transport systems where space is constrained. Its 21mm 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.
Installation Instructions
Weld the clip base to supports with a 5mm throat thickness fillet weld using low-hydrogen electrodes.
Omit welding on the side parallel to the rail (for non-padded rails) 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 21mm 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: Heavy container gantry cranes on narrow supports (e.g., QU120, GCR183 rails).
Mining & Quarries: High-load haul rails in narrow underground tunnels (e.g., ISCR140, MRS125 rails).
Industrial Machinery: Rail-mounted equipment in tight spaces (e.g., A150 rails in steel mills).
Shipyards: Marine cranes with limited support width.
| Parameter | Value |
|---|---|
| Model | W120/21 (Full Nut/Thin Nut) |
| Max Side Load | 185kN (18.5 tonnes) |
| Horizontal Adjustment | 21 mm |
| Bolt Specification | M20 Grade 8.8, Captive Bolt |
| Weight per Clip | 1.41 kg |
| Weld Type | 5mm Throat Thickness Fillet Weld |
| Recommended Electrodes | AWS E7018/E7028 (Low Hydrogen) |
| Minimum Assembly Width | Rail Width (F) + 120 mm |
| Components | Flange Nut, Rubber-Integrated Clip Cap, M20 Bolt, Weldable Base |
Key Features
Specifically engineered for installation on narrow rail supports, reducing footprint while maintaining high load capacity.
Low-profile structure fits tight spaces with guide rollers.
Two-piece design locks securely when the Grade 8.8 bolt is tightened to 350 Nm torque, ensuring consistent clamping force over time.
Integral vulcanized rubber block dampens vibrations and reduces wear:
14mm thickness for rails with pads (S model).
21mm thickness for rails without pads (H model).
Suitable for heavy-weight rails across global standards (contact GloryRail for full list):
Chinese: QU70–QU100, ISCR100–ISCR140
European: A100–A150, MRS86–MRS125
Weldable base and galvanized components 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 QU100 | 88.96 | W120/21 (S) | W120/21 (H) |
| Chinese QU120 | 118.1 | W120/21 (S) | W120/21 (H) |
| European A120 | 100 | W120/21 (S) | W120/21 (H) |
| European A150 | 150.3 | W120/21 (S) | W120/21 (H) |
| Industrial MRS86 | 86 | W120/21 (S) | W120/21 (H) |
| Industrial ISCR140 | 146 | W120/21 (S) | W120/21 (H) |
| Industrial GCR183 | 183.06 | W120/21 (S) | W120/21 (H) |