FAR Rivet Nut Tool Comparison: KJ45/S vs. KJ46 vs. KJ47 Setting Methods

Choosing the correct pneumatic rivet nut tool is essential for consistent quality. This guide compares the core differences between the top FAR rivet nut tool models: the KJ45/S, KJ46, and KJ47. The primary distinction lies in their setting method (Pull-to-Stroke vs. Pull-to-Pressure), which determines their suitability for different production environments. We also cover the high-volume favorite for smaller sizes, the FAR KJ60 (M3-M8).

The Core Difference of the KJ45/S, KJ46 & KJ47

The primary distinction is in their setting method, which determines their suitability for different applications and operators. Think of them like different types of transmissions on a vehicle: manual, automatic, or a flexible hybrid.

1️⃣ FAR KJ45/S: The Robust Traditionalist (M3-M12)

• How it Works:This is the traditional, "Pull to Stroke" method. The tool sets the rivet nut based on a fixed, mechanical stroke distance, precisely adjusted to the rivet nut's length and material thickness.
• Best For:This tool requires a skilled and "sensitive" operator who can feel the tool's action. It’s a simple, robust, and reliable workhorse for high-production environments with a consistent air supply.
• Key Advantage:A straightforward, no-frills method offering a wide installation range (M3-M12) and full operator control.

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2️⃣ FAR KJ46: The Versatile Innovator

• How it Works:The most advanced in the range, the KJ46 uses a Hybrid Setting that combines both mechanical stroke and pressure-based setting. This system uses a "force valve" to automatically adjust to the required force.
• Best For:Production lines with inconsistent air pressure or those with varying skill levels among operators. The tool's ability to self-regulate helps to compensate for operator error and external variations, ensuring correct installation every time.
• Key Advantage:Provides the most consistent and reliable setting by automatically adjusting and compensating for both air supply fluctuations and minor operational errors.

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3️⃣ FAR KJ47: The Lightweight Simplifier

• How it Works:This tool relies solely on a Pure Pressure Setting. It’s engineered for simplicity and ease of use, automatically applying the correct force without requiring manual stroke adjustments.
• Best For:Applications where a pure pull-to-pressure system is preferred, offering a competitive price point and a lighter tool for reduced operator fatigue.
• Key Advantage:A very light and cost-effective option that offers a simple, user-friendly modern setting method for efficient, low-effort use.

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Don't Forget the FAR KJ60: The High-Volume Favourite

For high-volume production for the smaller rivet nut range, our highly popular FAR KJ60 is the industry standard choice:

• Setting Capacity:Specifically designed for M3 up to M8 capacity.
• Operation:A pneumatic tool with a two-trigger setup, featuring automatic spin-on when pressure is applied to the mandrel and a trigger-operated spin-off.
• Key Benefit:Simple operation, fast and efficient, making it an excellent choice for any high-volume production environment focused on smaller rivet nut sizes.

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Ready to find your perfect fit?

Whether you need the robust control of the KJ45/S, the intelligent consistency of the KJ46, the streamlined simplicity of the KJ47, or the high-volume efficiency of the KJ60 for M3-M8, we have the right FAR tool to drive your productivity and quality forward.

Contact us today to discuss your specific application needs and to request a demo!