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Nakai Bolt Heater – Flexible & Straight Type | Precision Industrial Heating Solution

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Introduction

In industrial assembly and maintenance, achieving accurate bolt preload is critical for long-term reliability — especially in turbines, compressors, and heavy equipment. The Nakai Bolt Heater – Flexible & Straight Type delivers controlled, uniform heating to large-diameter bolts and studs, enabling precise thermal expansion and secure fastening with minimal mechanical stress. Engineered in Japan and supplied globally by Nichiboku Ltd., this advanced industrial tool ensures enhanced safety, efficiency, and process control for industrial bolting tasks.



Nakai Bolt Heater with two types: flexible and straight, displayed on a blue digital background with visible wiring and metal components.
The Nakai Bolt Heater, available in flexible and straight types, offers precision thermal expansion for industrial bolting, showcasing cutting-edge Japanese engineering.

Why Choose the Nakai Bolt Heater Flexible & Straight

Precision Heating for Industrial Bolting

The Bolt Heater Flexible & Straight models are designed to apply localized heat directly to the bolt, causing predictable thermal expansion that facilitates tightening or removal without excessive force. This reduces the risk of thread damage and improves operator safety.

Flexible Type – Adaptive for Confined Areas

  • Bendable heating element for tight or irregular spaces

  • Ideal for complex assemblies and limited access points

  • Easy positioning for varied bolt geometries

Straight Type – Efficient for Standard Applications

  • Rigid heater design for fast and uniform heat delivery

  • Suitable for standard bolts with direct access

  • Effective for repetitive maintenance operations

Key Features and Benefits

  • Controlled thermal expansion for accurate bolt tensioning

  • Improved safety compared to flame-based heating methods

  • Reduced maintenance time and labor costs

  • Wide range of sizes, lengths, and power ratings

  • Durable construction for harsh industrial environments7



Typical Industrial Applications

  • Power generation equipment maintenance

  • Oil and gas pressure vessels and flanges

  • Marine engines and propulsion systems

  • Heavy machinery and rotating equipment


Nichiboku Worldwide Supply Support

Nichiboku Ltd. provides global supply support for Japanese industrial products, ensuring reliable distribution and after-sales assistance worldwide.

➡️ Get global supply support ➡️ Inquire about international shipping and product availability ➡️ Partner with Nichiboku for worldwide industrial solutions



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