Würth
Würth High Strength Bearing Retainer
Würth High Strength Bearing Retainer
Key Features
- Provides high-strength bonding for cylindrical parts subjected to heavy loads.
- Reliable curing even at low temperatures around 0°C, making it suitable for winter use.
- Excellent gap-bridging capacity up to 0.15mm - fills surface roughness and deviations.
- Prevents fretting and frictional corrosion, ensuring bearings do not seize.
- Resistant to fuels, oils, gases, and solvents.
- NSF-registered, Class S5 - suitable for use in food, beverage, pharmaceutical, and paper industries.
- NSF/ANSI 61 tested for service and drinking water up to 82°C.
- DOS one-handed dispensing system with adjustable output and minimal waste.
- Silicone-free, solvent-free, and oil-free formulation.
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Description
High-Strength Retaining Compound for Bearings
Würth High Strength Bearing Retainer is a methacrylic acid ether-based anaerobic adhesive designed for securing cylindrical joining parts exposed to high mechanical and thermal loads. It ensures maximum retention strength by fully filling gaps and surface irregularities, creating a durable bond that resists loosening under extreme operating conditions.
Reliable Performance in Harsh Environments
This compound cures in the absence of oxygen and in contact with metal, achieving initial strength in just 5–10 minutes and full strength within 3–6 hours. It is highly resistant to chemicals, solvents, oils, fuels, and gases, and once cured, withstands operating temperatures between –55 °C and +150 °C.
Gap-Filling and Corrosion Protection
With a gap-filling capacity of up to 0.15 mm, the adhesive bridges surface roughness and dimensional tolerances, providing a uniform bond. It also protects against frictional corrosion, ensuring that bearings remain free-running and do not seize during service.
Wide-Ranging Applications
Designed for bushings, sleeves, ball bearings, sinter bronze, gears, bolts, shafts, and hub connections, the bearing retainer is widely used across industries including automotive, shipbuilding, mechanical engineering, toolmaking, electrical and electronics, and food and beverage manufacturing.
DOS Dispensing System Efficiency
The patented Würth DOS system enables one-handed operation with continuously adjustable dispensing, no residue in the dispensing neck, and virtually complete emptying of the container. This ensures efficient usage with minimal waste and optimised costs.
Technical Information
Specifications
Chemical Basis: Methacrylic acid ether
Colour: Green
Density: 1.07 g/cm³ (DIN EN ISO 2811-1)
Viscosity: 100–200 mPas at 25 °C (Brookfield RVT, spindle 2/20 rpm)
Suitable For Max. Thread: M12
Gap-Filling Ability: Max. 0.15 mm
Initial Strength: 5–10 min
Functional Strength: 30–40 min
Final Strength: 3–6 h
Prevail Torque: 35 Nm (DIN EN 15865)
Processing Temperature: +5 °C to +35 °C
Temperature Resistance (Cured): –55 °C to +150 °C
Flash Point: Min. 90 °C
Shelf Life: 18 months (room temperature)
Weight of Content: 50 g
Silicone-Free: Yes
Solvent-Free: Yes
Fully Curing Conditions: Exclusion of oxygen and contact with metal (copper/iron ions)
Documents
Application Instructions
- Ensure contact surfaces are dry, dust-free, and grease-free.
- Apply the bearing retainer generously to the adhesive surfaces.
- Assemble components immediately after application.
- Allow the adhesive to cure.
Safety and Usage Notes
- Recommended curing conditions: absence of oxygen and contact with metal ions (copper or iron).
- Some plastics (ABS, polystyrene, polycarbonate, PMMA, SAN, painted surfaces, etc.) may be affected with prolonged exposure - test before use.
- NSF-tested and approved for use with service and drinking water up to 82°C.
- Shelf life: 18 months at room temperature.
- Wear protective gloves and goggles during application.
- Ensure adequate ventilation when using in enclosed areas.