Y3 Flexible Rail Clip: Weldable Self-Locking Crane Rail Clamp
Engineered for overhead, gantry & port crane rail systems. Forged Q235 with vulcanized rubber nose, M16 Grade 8.8 bolts, 66 kN lateral load capacity.
What is Y3 Flexible Rail Clip?
The Y3 Flexible Rail Clip is a weldable, self-locking rail fastening solution designed for overhead crane, gantry crane, and port crane rail systems. Manufactured from forged Q235 (S355J2 on request) with a vulcanized synthetic rubber nose, the Y3 clip delivers controlled vertical elasticity while maintaining rigid lateral stability — exactly what heavy-duty crane rails demand.
Trusted in 40+ countries, Glory Rail’s Y3 Flexible Rail Clip directly replaces ZPMC-type trolley rail clamps for port and gantry cranes, with full fitment to DIN 536 A75/A100/A120, GB P43/P50 heavy rails, and QU80/QU100 crane rails.
Key Features of Y3 Rail Clip
Self-Locking Wedge Design: Two-part clip locks automatically as the nut is tightened — no slippage under extreme wheel loads.
Vulcanized Rubber Nose: Absorbs vertical vibration, reduces noise, and extends rail & wheel service life.
Weldable Q235 Forged Base: No drilling into crane beams; full load transfer through fillet welding.
M16 Gr.8.8 · 200 Nm Torque: Controlled 66 kN preload ensures consistent clamping force across the rail line.
Lateral Adjustment Built In: Slotted holes allow fine sideways alignment during installation.
Salt-Fog & UV Resistant: 10-year rubber service life even in coastal and corrosive port environments.
Y3 Flexible Rail Clip Specifications
| Parameter | Value |
|---|---|
| Model | Y3 Flexible Rail Clip (Weldable) |
| Base Material | Q235 forged steel (S355J2 optional) |
| Cover Plate | Q235 + vulcanized rubber nose |
| Bolt Spec | M16×40, Grade 8.8 (GB/T 5783-86) |
| Nut Spec | M16, Grade 8 (GB/T 6177.1-SLFT) |
| Tightening Torque | 200 Nm (k = 0.2) |
| Bolt Preload | 66 kN |
| Max. Lateral Load | 66 kN (up to 130 kN per Bemorail spec) |
| Rubber Tensile Strength | ≥ 15 MPa (post-vulcanization) |
| Rubber Hardness | Shore A 75 |
| Rubber Service Life | ≥ 10 years (salt fog, UV, oil resistant) |
| Welding Method | Full perimeter fillet weld, min. 4 mm leg |
| Set Weight (approx.) | 1.9 kg / set |
| HS Code | 7302.40 |
Need a different configuration? Glory Rail provides custom manufacturing for flexible rail clips. Send us your specifications for a tailored solution and quotation.
Compatible Rail Types for Y3 Rail Clip
| Rail Standard | Rail Sections | Common Application |
|---|---|---|
| DIN 536 Crane Rail | A75, A100, A120 | Port cranes, gantry cranes |
| GB/T Heavy Rail | P43, P50 | Overhead cranes in workshops |
| GB Crane Rail | QU80, QU100 | Steel mills, heavy fabrication |
| DIN 536 (extra-heavy) | A150 | Extra-heavy port handling |
Why Choose Glory Rail for Y3 Clips?
20+ years of crane rail expertise — we understand the stresses your system faces.
Large stock of Y3 clips and compatible bolts/nuts — fast dispatch from Tianjin or Zhengzhou.
Dimensional verification — send us your existing clip photos and we confirm compatibility before you order.
Sample testing support — pre-production samples for fit-check, as proven in our Indonesia 402-set project.
Full documentation — material certificates, dimensional inspection reports, third-party test reports on request.
Customization — different bolt lengths, surface treatments (HDG, zinc-plated, epoxy), non-standard rail profiles.
FAQ for Y3 Flexible Clip
Is the Y3 clip a direct replacement for ZPMC crane rail clips?
Yes. The Y3 Flexible Rail Clip matches the dimensions and performance of ZPMC-style trolley rail clips. We verify critical dimensions (base width, bolt-hole spacing, overall length, thickness) before shipment to guarantee a direct fit.
Can I use Y3 clips on a concrete foundation?
The standard Y3 is weldable and designed for steel sole plates. For concrete foundations, we recommend our bolted clip series (e.g., 3116, 3220). Contact us with your foundation type and we will specify the correct solution.
Do you provide the bolts and nuts?
Yes. Each Y3 set can be supplied complete with M16×35 Grade 8.8 bolts, M16 Grade 8 flange nuts, and hardened washers. Hot-dip galvanized or plain finish available.
Y3 Rail Clip in Rail Projects
Y3 Rail Clamps · 43kg Crane Rail
📍 IndonesiaChallenge
- Worn or damaged Y3 clamps on 43kg crane rail
- Operational downtime concerns
Solution
- Y3 rail clamp replacement supplied
- Compatible with existing 43kg rail profile
Result: Crane track reliability restored, minimized operational disruption.