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Nakai Bolt Heater for Industrial Use | Straight & Flexible Types

Industrial Applications Sector:

Petrochemical, Power Generation, Oil & Gas, Marine, Mining

Nakai electric bolt heaters in straight and flexible types with insulated handles and power cables for industrial bolting applications.

Electric Heater for Controlled Bolt Expansion

The Nakai Bolt Heater is an electric resistance heating tool engineered in Japan for controlled thermal expansion of large-diameter bolts, studs, and tie rods during assembly and disassembly. By uniformly heating the fastener, it enables accurate preload application while reducing mechanical stress on flanges and joints — available in Straight and Flexible configurations to match different access geometries.


Built for high-demand sites such as turbine casing assembly, pressure vessel maintenance, and rotating equipment overhaul, the Nakai Bolt Heater supports repeatable heating cycles for consistent bolting quality and reduced risk of galling or thread damage. Standard diameters range from 15 to 26 mm, with inspection documentation included on every unit.


Detalles:

Japanese industrial equipment sourcing and export support from Japan, with global supply routes and RFQ requirements for model reference, quantity and destination country.
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