Crane Rail End Stops for Safe Crane Operation
The crane stops (also called crane end stop or crane bumper stop) protects personnel and equipment by preventing cranes from running off the rail. We mount stops at both ends of the crane runway. When a trolley or bridge reaches the end, the stop absorbs the impact and keeps the crane on track.
Crane stops are a safety device, not a substitute for crane brakes. Use them to add a final layer of protection for gantry cranes, overhead cranes, jibs, and temporary runway setups.
Crane Stops Safety & Operation
Cranes carry large mass and can travel at high speed. If brakes fail or the operator misjudges a move, the kinetic energy can cause a derailment or structural damage. A correctly designed crane end stop controls that impact and prevents catastrophic outcomes. Install them on both sides of the runway and pair them with buffers so both ends contact simultaneously.
How it works
The crane stop operates through three simple steps that keep the crane under control:
- The stop is fixed to the beam corbel or end plate. Its height matches the bumper level so both surfaces meet squarely under load.
- The stop aligns with the rail and the motion direction of the trolley or bridge. This alignment ensures a straight, even contact instead of side loading.
- When the crane reaches the limit, the bumper touches the stop and the structure absorbs the hit. The buffer element takes part of the energy, and the steel body carries the remaining force into the beam.
crane stopper design & production
As a professional crane rail system supplier, we manufacture crane rail stops using S355JR high-strength steel plate for stable, long-term performance. Each blank is laser-cut for precise dimensions, and all welds follow strict international practices to ensure clean and reliable joints. We provide sandblasting, rust removal, hot-dip galvanizing, and protective paint coatings, making the stops suitable for heavy-duty, industrial, and coastal environments. Every stop is engineered to withstand the full impact loads generated by your crane.
Customization
We produce stops from your drawing or design them from site details.
- Sizes, buffer types, and mounting plates vary by crane type (bridge, gantry, jib, trolley).
- For temporary crane stops we offer modular, bolt-on designs you can install and remove quickly.
- We verify the stop against crane mass, maximum travel speed, and stopping energy to recommend the right buffer and backing plate.
Crane Stops Model Selection (GCD Series)
Besides custom-made crane stops, we also manufacture a full range of GCD-series models from the 23G525 industrial standard. These models cover single-girder, double-girder, and heavy-duty cranes up to 250 tons.
Customers can select a model directly from the table, or send us the crane data for verification.
If the project exceeds the impact force or height limits shown, we will redesign the stop with reinforced plates, upgraded steel grade, or a larger energy-absorbing buffer.
We can manufacture every GCD model (GCD-1 to GCD-11) and also support custom drawings.
Crane Stop Model Table (Q235B / Q355B Options)
| Rated Crane Capacity (t) | Applicable Crane Type | Q235B Model | Q355B Model | Impact Force F (kN) | Buffer Center to Beam Top (mm) | Steel Weight (kg) | Rubber Weight (kg) |
|---|---|---|---|---|---|---|---|
| 3–10 t | Electric Single-Girder | GCD-1 | — | 34.8 | ≤420 | 36.8 | 1.8 |
| 5–10 t | Single-Girder | GCD-2 | — | 195.3 | ≤1170 | 116.5 | 5.0 |
| 16–20 t | Single-Girder | GCD-3 | — | 208.1 | ≤1270 | 131.9 | 5.0 |
| 32 t | Double-Girder | GCD-4 | GCD-8 | 228.2 | ≤1410 | 163.1 / (142.0) | 5.0 / (5.0) |
| 50 t | Double-Girder | GCD-5 | GCD-9 | 290.2 | ≤1430 | 203.3 / (165.8) | 5.5 / (5.0) |
| 75–100 t | Heavy Duty Cranes | GCD-6 | GCD-10 | 451.8 | ≤1370 | 272.9 / (231.8) | 6.0 / (6.0) |
| 125–250 t | Heavy Duty Cranes | GCD-7 | GCD-11 | 370.6 | ≤1370 | 247.3 / (196.9) | 6.0 / (5.5) |
Notes:
- For cranes ≤20 t, crane stops use Q235B as standard.
- For cranes >20 t, both Q235B and Q355B are available, matching the material grade of the runway beam.
- Numbers in parentheses represent Q355B versions; numbers without parentheses are Q235B.
crane rail stops we supply
Get Your Custom Quote
Need crane end stops sized for your runway? Send your crane mass, travel speed, and beam drawing. We’ll reply with a recommended design, shop drawing, and quote.