Commutator Securing with UV Adhesives

Hoenle has developed special adhesives for securing wires to commutators that are extremely impact-resistant and cure quickly under UV light, making oven processes superfluous. These adhesives are highly viscous and stable, but at the same time flow into cavities thanks to optimized flow properties. The adhesive can be applied in a ring around the commutator in automated processes.

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Hoenle offers a wide range of fast curing adhesive technologies that have unique properties to better meet the challenges of electric motor assembly. Adhesive properties include a wide range of elongation values, high Tg values for reduced movement and improved elasticity to meet the operational requirements of the stator, rotor and magnets under high temperatures, shock and vibration. The Hoenle adhesive portfolio is broad and includes 1- and 2-component epoxy resin adhesives as well as UV-, light- and dual-curing adhesives. They are particularly suitable for the various assembly and coating applications associated with the assembly of electric motors.

Commutator Securing Adhesives for Automotive

Commutators can be bonded quickly and reliably with UV adhesive

Technical data sheets can be downloaded by clicking on the adhesive name.

Adhesive	Application Areas	Viscosity [mPas]	Base	Curing *	Special Properties
Structalit® 5803	Magnet bonding	100,000 mix (Rheometer, 25°C, 10s^-1)	2-part epoxy	thermal, room temperature	Black color Good oil, chemical and moisture resistance Impact resistant Low water absorption Very good adhesion to metal Flame classification based on UL 94 HB
Structalit® 5858	Magnet bonding	82,000-100,000 (Rheometer, 25 °C, 10s^-1)	epoxy	thermal	Opaque, white color, adheres well to metal, impact resistant, good elongation at break
Structalit® 5859	Adhesive for bonding magnets, flanges and ball bearings	82,000-100,000 (Rheometer, 25 °C, 10s^-1)	epoxy	thermal	Opaque, white color, adheres well to metal, impact resistant, good elongation at break
Structalit® 8801	Attaching components on PCBs, Encapsulation of electronic components,, Encapsulation of plastic parts, Potting material	30,000-45,000 (LVT, 25°C, Sp. 4/6 rpm)	epoxy	thermal	Epoxy-based resin resistant to high temperatures and oil/grease perfect choice for ring applications
Structalit® 8838	Attaching components on PCBs; Encapsulation or potting of electronic components	6,500-7,500 (Rheometer, 25°C, 20s^-1)	epoxy	thermal	Black color flexible potting compound excellent flow properties
Vitralit® 4282 mod2	UV-anaerobic adhesive for flanges and ball bearings	500-600	acrylate	UV secondary anaerobic	UV curing thread locking fast anaerobic post-curing light green color
Vitralit® UC 1406	Filament winding	250-450	epoxy	UV VIS	Very good wetting properties Electrically insulating High glass transition temperature Solvent-free Ideal for filament winding
Vitralit® UD 1405	Filament winding	250-450	epoxy	UV VIS thermal	Ideal for fiber-reinforced windings for electrical composite components Very good wetting properties Resistant to temperature Electrically insulating Transparent, one-component
Vitralit® UD 4292 F	Bonding ball bearings of electric motors	40-70 (LVT 25°C, Sp. 2/30 rpm)	acrylate	UV VIS secondary anaerobic	capillary flowing, bluish fluorescent, high Tg, secondary anaerobic curing
Vitralit® UV E-2113	Securing commutators	25,000-35,000 (Rheometer, 25°C, 10s^-1)	acrylate	UV VIS	Highly filled Low CTE Low shrinkage Impact resistant Dry surface Resistant to industrial soldering