KRAB Heavy (84-09SA)
Model: KRAB 84-09SA Heavy-Duty
Heavy-duty trolley for track geometry and rail profile measurement, towed behind a railway vehicle at up to 25 km/h.
The only KRAB designed for towing behind railway vehicles — maximum stability and full add-on compatibility for comprehensive track condition inspection.
Measurement Tasks
At a glance
Overview & Specifications
Why Choose KRAB Heavy (84-09SA)
- Towing behind a railway vehicle, measuring at up to 25 km/h.
- Add-ons such as LPS (Laser Profile Scanner) or rail profile cameras for track clearance and rail wear evaluation.
- Maximum stability and anti-derailment mechanism.
- Suitable for long-distance measurement campaigns.
Designed for towing behind railway vehicles, with manual operation capability for station tracks and complex areas. Approved by ČD (Czech Railways), RENFE (Spain), and DB (Germany).
- Towing + manual operation — tow at speed on main lines, push manually in stations
- Failsafe brake system — automatic activation on wheel loss or derailment
- Proximity sensors (3×) — rail contact monitoring with visual and acoustic warnings
- Automatic tow bar decoupling — safety disconnect on derailment detection
- Foldable — compact for transport despite its robust construction
Technical Specifications EN 13848-2 EN 13848-4
Weight
110 kg
Wheel Diameter
180 mm (enlarged for obstacle crossing)
Battery
Removable Li-Ion, 8 hours
Operating Temperature
−20 to +55°C
Scanning Interval
0.25 m (variable)
Memory Capacity
~1000 km of data
What It Measures
Base configuration without add-ons; LPS and rail profile cameras extend the list
| Parameter | Accuracy |
|---|---|
| Gauge | ±0.4 mm |
| Alignment (horizontal) | ±0.8 mm (1–25 m) |
| Top (vertical) | ±0.5 mm (1–25 m) |
| Cant / Cross Level | ±1.0 mm (range ±225 mm) |
| Twist | Selectable chord length |
| Radius | 1000/R calculation |
| Distance | 1.0 m/km |
| Speed | Continuous |
Compatible Add-ons
LPS - Laser Profile Scanner
Clearance profile measurement, breach detection, overhead line equipment and platform evaluation, infrastructure scanning
Video Recording System
High-definition video recording for track inspection and documentation
Rail Profile Measurement
Precise rail wear measurement and profile analysis
Compatible Software
Fully integrated with the KZV software ecosystem
Download Datasheet
Full technical specifications as a PDF:
Videos
KRAB System Live Rail Test
The KRAB trolley during a live rail test, measuring track geometry and rail profiles in real field conditions.
KRAB Heavy in Operation
KRAB Heavy (84-09SA) coupled to a rail vehicle for pushed or towed measurement of main-line track geometry, with its derailment prevention and protection systems in place.
Interested in KRAB Heavy (84-09SA)?
Contact us for detailed specifications, pricing, and delivery information