Bolt Expansion System
An induction-based system for fast, safe and precise expansion of bolts used in turbines and heavy-duty assemblies.
Railway Induction Heating Systems
ENRX provides a full range of induction heating systems purpose-built for railway maintenance and rolling-stock production, induction offers unrivalled accuracy, speed and controllability, making it ideal for tasks such as disassembling and shrink-fitting lock rings and bearings, replacing tyres and wheels, brazing components, straightening rolling stock and welding rails.
Induction heating delivers fast, uniform and localized heating without open flames, reducing risk, preventing shaft damage and minimizing heat exposure to adjacent components. Mobile Minac units allow on-site operations such as shrink-fitting, wheel replacement, Loctite loosening and pre-heating rails. Automated systems can also be integrated for production environments.
- • Localized, uniform, flame-free heating
- • Mobile and stationary induction systems (incl. Minac converters)
- • Adjustable coil designs for different wheel and tyre diameters
- • Programmable ramp-up times, power control and dwell times
- • Supports shrink-fitting, brazing, straightening and rail welding
- • Remote-controlled rail welding for maximum operator safety
- • Fast heating cycles (e.g., wheel removal/fitting in ~10 minutes)
- • Precise temperature control for Loctite release (around 250°C)
- • Safer operation with no open flames, sparks or smoke
- • No mechanical force required for wheel removal
- • Eliminates shaft scratching and reduces risk of component damage
- • Faster turnaround and reduced maintenance downtime
- • High repeatability and reliable heating results
- • Suitable for tunnel work due to minimal emissions
- • Energy-efficient compared to traditional welding/heating methods
- • Reduced need for heavy hydraulic equipment
Railway-specific applications include:
- • Shrink-fitting and removal of lock rings, ball bearings and brake hubs
- • Heating and replacing steel tyres on rims
- • Fitting and removing wheels from axles
- • Releasing Loctite-fastened joints
- • Brazing of copper and other rolling-stock components
- • Induction straightening of chassis and structural parts
- • Rail pre-heating, hardening and in-field welding
- • Safe in-tunnel induction welding operations
Other Products From ENRX
Weldac – High‑Output Solid‑State Tub & Pipe Welders
A complete family of high‑output solid‑state induction welders for tube and pipe production, delivering high efficiency, compact design, and minimal
Induction Brazing System
A comprehensive induction brazing technology offering fast, precise, clean and repeatable joining for a wide range of metals and industrial
Shrink-Fitting System – Electrical Motors & Pumps
Induction heating system designed for fast, precise and safe shrink‑fitting of bearings, rotors, impellers, and pump components.