The Caloritech™ IXS Bolt Heater (Stud Heater) is designed for insertion into large hollow studs. When energized, the heater is intended to expand the length of the stud to facilitate wrench tightening of the nut. These heaters are generally used in pairs or sets to achieve uniform bolt tension.
Typical applications include assembly and disassembly of turbines, engine heads, dies, cylinders and large flanged connections. It should be noted that although the heaters are of premium quality, the elevated element sheath temperatures experienced in these applications can result in relatively brief heater life. However, limiting heater "on" time during a heating cycle to the minimum required can prolong service life.
Features & Benefits At A Glance
- Suitable for hole diameters ranging from 0.5" to 1" (12.7 mm to 25.4 mm)
- Heater diameters range from 0.49" to 0.984" (12.4 mm to 25.0 mm)
- Heated lengths range from 12" to 60" (305 mm to 1524 mm)
- Standard voltages range from 120V to 600V, depending on heater size
- Standard wattages range from 850 W to 8000 W, depending on heater size
- Relatively lightweight units range in weight from 4 lbs to 9 lbs (2 kg to 4 kg), depending on heater size
- Custom lengths, diameters and wattages are available on special order; check factory for availability






