Loxeal 83-21 high-strength anaerobic retaining adhesive 50 ml, fast-curing shaft–hub and bearing retainer for high-temperature applications

Loxeal 83-21 anaerobic adhesive 50 ml is a single-component, high-strength, very fast curing compound designed for fixing metal parts in cylindrical assemblies such as shaft–hub joints. It protects joints against leakage and corrosion and cures in the absence of air within the gap between two metal surfaces. It is particularly suitable for mounting bearings, drive wheels, sleeves and keys in systems operating at elevated temperatures.

Advantages and unique features

• High strength – provides very strong retention of shaft–hub assemblies.
• Very short polymerisation time – handling strength is reached within a few minutes.
• Replaces thermal and press-fit assembly methods for cylindrical metal components.
• Resistant to gas, air, water, oils, alkalis and many other process chemicals.
• High resistance to shock and vibration – stable joints in demanding applications.
• Fluorescent additive allows easy inspection of adhesive presence in the joint under UV light.
• Designed for a wide service temperature range up to about +175 °C.

Properties and applications

• Shaft–hub assemblies: forms an elastic bond that secures the connection against loosening, rotation or axial slip, replacing shrink or press fits.
• Bearings, drive wheels, sleeves, keys: ideal where high axial loads and torques must be transmitted and dismantling of the joint is intentionally difficult.
• Sealing of cylindrical joints: completely fills the clearance, ensuring tight systems exposed to liquid or gas pressure.
• Resistance to operating conditions: maintains its properties under temperature variations, vibration and contact with many chemicals.
• Application control: green fluorescent colour makes it easy to verify that the adhesive has been applied uniformly.
• Limitations of use: not recommended for equipment with pure oxygen or chlorine, nor for thermoplastic materials where stress cracking may occur.

Technical data

Storage recommendations

Store Loxeal 83-21 in its original, tightly closed container in a dry, cool place at temperatures between +8 and +28 °C. Protect the product from direct sunlight, heat sources and contamination. After each use wipe the bottle neck and close it carefully. Keep away from foodstuffs and out of the reach of children.

FAQ

What is Loxeal 83-21 used for?
Loxeal 83-21 is intended for fixing metal parts in cylindrical assemblies such as shaft–hub joints, especially bearings, drive wheels, sleeves and keys in high-load, high-temperature applications.

How fast does the adhesive cure?
Under typical workshop conditions handling strength is reached after about 2–5 minutes, and functional strength after 1–3 hours.

Is Loxeal 83-21 suitable for elevated temperatures?
Yes, the cured bond maintains its mechanical properties up to approximately +175 °C, making it suitable for systems operating at elevated temperatures.

Can joints bonded with Loxeal 83-21 be disassembled?
It is a high-strength retainer, so disassembly is difficult and usually requires significant force or heating of the components, while observing appropriate safety procedures.

On which materials should Loxeal 83-21 not be used?
The product is not recommended for use in equipment carrying pure oxygen or chlorine, nor on thermoplastic materials where stress cracking may occur.