Induction hardening
Our hardening solutions are used by many of the world’s leading car manufacturers and their suppliers.
What is induction hardening?
What are the benefits?
- A fast and repeatable process that integrates easily into production lines
- Clean, safe, energy-efficient, and typically with a small footprint
- Individually treated workpieces; each piece is hardened to its precise specification
Where is it used?
Induction is used to harden numerous components. Here are just a few of them: gears, crankshafts, camshafts, drive shafts, output shafts, torsion bars, rocker arms, CV joints, tulips, valves, rock drills, and slewing rings, as well as inner and outer races.
ENRX hardening solutions are utilized across a wide range of industries globally. However, most systems fall into the following categories.
What equipment is available?
Solutions explained
Insights and resources
Download brochures and expert materials on induction heating technologies and their industrial applications.
HardLine M Modular Hardening Machine | ENRX Induction Heat Treatment Solutions
Discover the ENRX HardLine M modular vertical hardening machine – a flexible, cost-effective induction hardening solution designed for Industry 4.0 manufacturing. Built for reliability, scalability, and energy efficiency, HardLine M supports a wide range of workpieces and integrates advanced automation, real-time data monitoring, and smart connectivity for optimized performance.
Induction heating applications | Processes, equipment and benefits
Discover how ENRX induction heating improves efficiency, precision, and sustainability across industrial applications — from brazing and bonding to forging and annealing. Learn about the processes, equipment, and benefits of modern induction technology.
Induction hardening of large rings and gears
ENRX delivers advanced induction hardening solutions for large rings, gears, and bearing components. Our technology ensures fast, precise, and repeatable results—eliminating soft zones while reducing energy use, distortion, and total production costs.
How Nøsted & doubled its chain manufacturing capacity
Working closely with ENRX, Nøsted & AS doubled its chain production capacity by upgrading their induction hardening and tempering system. The modernised system has also reduced the risk of unplanned downtime, improving reliability for both production planning and customer delivery.
Tomorrow's technology for tough tractors
When one of the world’s leading manufacturers of agricultural equipment invests in new production technology, the requirements are clear: reliability, precision and productivity must all advance together. That is exactly the challenge ENRX has addressed with the delivery of two advanced induction hardening machines for a facility in Germany.
A closer look at how it works
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ENRX’s patented simultaneous multi-frequency hardening. The process achieves true contour hardening of small gears in well under a second.
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ENRX is the world’s largest induction hardening equipment maker with more than 70 years’ experience.
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High troughput and consistent heating outcomes are essential when heat treating bars and shaft
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A HardLine Centerless Pusher machine heat treats steel bars
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Customised coil for induction hardening of camshafts.
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ENRX design, make and maintain customised coils for camshaft hardening. These formed coils deliver precise heat patterns and penetration depts for perfect hardening results.
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There are many reasons why induction heating is the preferred method for hardening camshafts.
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ENRX induction camshaft hardening solutions are used by many of the leading names in the truck, bus, excavator and earth-moving equipment industries. Our systems are also widely used to harden marine camshafts.
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Car crankshafts, truck crankshafts, marine crankshafts - ENRX systems are used worldwide to harden every imaginable type of crankshaft in a wide range of production volumes.
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An ENRX robot-type crankshaft hardening system in action. All our systems feature mechanical and control innovations that minimize Total Indicated Run-Out
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Double hardening for double productivity. The quenching phase inside a single cabinet hardening machine with twin tailstocks and centres.
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Seamless induction hardening of large rings and gears.
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Gear tooth hardening. Advanced coil design and process control software ensure short cycle times and precise repeatability.
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HardLine heat treatment solutions for hardening of large rings and gears
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ENRX offers hardening solutions for virtually any dimension of raceways, balltracks and gears.
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A programmable quenching cycle in work
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Induction hardening of slewing ring without soft zone.
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Induction is the cost-cutting alternative to furnace case hardening of small- and medium-sized gears.
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Quenching of a small gear that has been heated by the simultaneous multi-frequency method.
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A small gear that has been heated with a single frequency
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Induction hardening of steering rack
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Chain heat treatment. An integrated induction hardening and tempering solution enables you to easily produce premium grade chain.
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A two-lined ENRX chain heat treatment solution. Our unique coil design means we can reduce the height of the lines considerably.
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An optical heat sensor measures chain temperature. The sensor is just one of many quality assurance features available for an ENRX chain treatment solution.
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Hardening of bearing and slewing rings. Shrink fitting of main shaft bearings and sleeve rings.
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A large ring being hardened by an ENRX nvertical scanning hardening machine.
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Hardening of gearbox shaft and bearings. Hardening of generator bearings.
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Hardening of pitch bearings. Stator house shrink fitting of yaw motor and pitch motor.
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Gear hardening of yaw drives and slewing rings.
