NLB-2000 Portable Petrol Engine Rail Bolt Wrench – High-Torque Railway Bolt Tightening Tool
Video: NLB-2000 efficiently removes a severely rusted M24 rail fastener in under 15 seconds during field maintenance in a mountain tunnel.
The NLB-2000 is a professional railway bolt tightening tool powered by a robust 3.5kW petrol engine, delivering up to 2000 N·m peak torque. Designed for heavy-duty track maintenance tools applications, it efficiently tightens or loosens M16–M32 rail fasteners-even severely rusted or seized bolts-in vertical, horizontal, or inclined positions.
Weighing just 19 kg (620×455×285 mm), this compact petrol-powered rail wrench enables rapid deployment in tunnels, bridges, turnouts, and other confined spaces where electric tools are impractical.
As a certified high-tech railway equipment manufacturer, Henan Qiangli Machinery ensures all products comply with international standards, including UIC 774-3 for rail fastening systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Petrol Engine | 3.5 kW (4.8 HP) / 9000 rpm |
| No-load Speed | 3400 rpm |
| Peak Torque | 2000 N·m |
| Applicable Nuts | M16 – M32 |
| Weight | 19 kg |
| Dimensions (L×W×H) | 620 × 455 × 285 mm |
Maintenance & Upkeep
- Replace closed gearbox oil every 12 months (min. ISO VG 68 viscosity).
- Inspect impactor housing grease every 6 months; replace if degraded.
- Check all fasteners before each use.
- Replace cracked viewing card rings immediately.
- For long-term storage: drain fuel and store in a dry, cool place.
Operation Precautions
- Use correct socket sleeves for M16–M32 nuts to prevent damage.
- Set reversing handwheel to neutral before engine start.
- Adjust engine speed only under no-load conditions.
- Pre-mix fuel in a separate container before refueling.
- Release tank pressure slowly when refueling during breaks.
Applications in Railway Maintenance
- Rail Fastener Management: Rapid tightening/loosening of track bolts during routine track maintenance.
- Rusted Bolt Removal: Breaks free aged or corroded nuts without damaging rail components.
- Confined Spaces: Operates effectively in tunnels, bridges, and switch zones with limited access.
Why Choose NLB-2000?
- High-Efficiency Impact System: Delivers repeated 2000 N·m impacts to conquer rusted or seized rail bolts.
- Multi-Angle Operation: Works vertically, horizontally, or at inclines-ideal for complex track geometries.
- Lightweight & Portable: 19 kg design enables single-operator mobility in remote areas.
- Wide Compatibility: Supports all standard M16–M32 rail fasteners used in global railway networks.
Ready to upgrade your railway maintenance toolkit?
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