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YFX-400/80 Wind Storm Brake – Electro-Hydraulic Iron Wedge, 80kN Anchoring Force, Spring-Applied, For Outdoor Rail Crane & RTG Safety
YFX-400/80 Wind Storm Brake ✔ Iron Wedge, Not Friction Pad - When power fails, a hardened steel wedge drops UNDER the wheel onto the rail. Wheel rolls up the ramp and locks mechanically. Even if hydraulics leak, the wedge STAYS put (self-locking wedge angle). This is a fundamentally different -...
Description
YFX-400/80 Wind Storm Brake
✔ Iron Wedge, Not Friction Pad - When power fails, a hardened steel wedge drops UNDER the wheel onto the rail. Wheel rolls up the ramp and locks mechanically. Even if hydraulics leak, the wedge STAYS put (self-locking wedge angle). This is a fundamentally different - and more reliable - principle than any friction-pad brake.
✔ 32kN Storm Holding Force (per unit) - YFX-400/80 delivers 32kN of horizontal wind-resistant force (rated, f=0.46, per wheel load). Stack multiple units on one crane to meet any wind code.
✔ Fail-Safe, Spring-Applied - Power Off = Wedge Drops - Normally closed. ED80/6 thruster only to LIFT the wedge. Blackout, storm, contactor drop, broken wire → internal spring slams wedge onto rail in <0.5s. No battery, no UPS needed.
Products Description
The YFX-400/80 is a storm / windproof iron-wedge brake - a safety device for outdoor rail-mounted cranes. It does NOT do running deceleration (that's the job of your YW series service brakes). Its single job: when the crane is parked, lock it to the rail so a 12-class typhoon cannot move it a millimetre.
How the model reads: YFX = Electro-hydraulic windproof wedge; 400 = fits Ø400mm travel wheel; 80 = matched with ED80/6 electro-hydraulic thruster (NOT 80kN - see spec table below).
What it solves: Outdoor gantry cranes, portals, RTGs, ship-to-shore cranes, and rail transfer cars are exposed to sudden gusts. A 20m/s wind on a 40t gantry generates a horizontal force of ~150–200kN. Ordinary service brakes can creep. The YFX wedge, combined with anchoring cables, converts that force into a mechanical ramp-lock against the rail head. This is why crane safety codes treat windproof wedges as mandatory, not optional.
Typical Applications
Port & terminal: STS crane, RTG / RMG yard crane, quayside container crane, ship loader / unloader
Steel & logistics: outdoor gantry crane, ladle crane, rail transfer car, railway yard gantry
Non-working-hour anchoring: paired with anchor devices & wind-resistant cables (double lock)
Any rail-mounted equipment operating in high-wind, typhoon, or open-yard environments
2. Technical Specifications
| Parameter | Value | Remark |
|---|---|---|
| Model | YFX-400/80 | Y = electro-hydraulic, F = windproof, X = wedge type |
| Brake type | Normally closed, spring-applied, electro-hydraulic release | Iron-wedge, not friction-disc |
| Travel wheel diameter | Ø400 mm | matches 400mm crane wheel |
| Matched thruster | ED80/6 (Ed80/6ws) | thrust 800N, stroke 60mm |
| Single-unit windproof force | 32 kN | F = f × N_wheel (f = 0.46) |
| Working principle | Power-on → wedge lifts; Power-off → spring drops wedge | self-locking wedge angle |
| Closing (wedge drop) time | < 0.5 s (to 90% force) | fail-safe |
| Rated supply | 3-phase AC 380V / 50Hz | 220V / 415V / 60Hz custom |
| Protection class | IP65 (thruster enclosure) | IP66 / anti-corrosion (F) optional |
| Limit switch | K1 option (up/down position feedback) | PLC interlock |
| Manual release | Standard (hand lever) | for maintenance move |
| Wedge material | High-wear-resistant alloy steel | special heat & anti-rust treatment |
| Ambient temp. | -20°C to +50°C | altitude ≤2000m (per GB/T 755) |
| Mounting | Left / Right (S1 / S2), viewed from front | bolt-on to crane frame |
| Weight | ~129 kg | - |
| Standard | JB/T 7021 reference, crane design code | - |
⚠️ Important - "80" is NOT 80kN. The "80" in YFX-400/80 denotes the ED80 thruster model, not the holding force. The actual per-unit windproof force of YFX-400/80 is 32kN. The correct formula is F = f × N_wheel (f = 0.46, N_wheel = wheel load). Always calculate total crane wind load and select the number of YFX units accordingly - never guess from the model number.
3. YFX Family - Full Range (One Look to Size)
| Model | Wheel Ø (mm) | Thruster | Single-unit Windproof Force (kN) | Typical Rail |
|---|---|---|---|---|
| YFX-350/80 | 350 | ED80/6 | 25 | P24 / P30 / P38 |
| YFX-400/80 (This) | 400 | ED80/6 | 32 | P30 / P38 / P43 |
| YFX-500/80 | 500 | ED80/6 | 42 | P38 / P43 / P50 |
| YFX-600/80 | 600 | ED80/6 | 55 | P43 / P50 / P60 |
| YFX-630/80 | 630 | ED80/6 | 60 | P50 / P60 |
| YFX-700/80 | 700 | ED80/6 | 68 | P60 heavy rail & up |
| YFX-800/80 | 800 | ED80/6 | 78 | P60 heavy rail & up |
| Heavy-duty version: YFX-xxx/121 (ED121/6 thruster) - e.g. YFX-600/121 = 70kN, YFX-800/121 = 96kN, for coastal / large-tonnage gantry | ||||
Hot Tags: yfx-400/80 wind storm brake – electro-hydraulic iron wedge, 80kn anchoring force, spring-applied, for outdoor rail crane & rtg safety, China, manufacturers, supplier, factory, customized
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