Magnet Bonding

For electric drives, performance, weight and space savings are key. This increases the demands on the materials in terms of mechanical, chemical and thermal resistance in order to ensure long-lasting operation. Adhesives meet these requirements, adhere to various metals, ferrites and copper coils and are suitable for a wide range of applications, such as bonding stator stacks, thread windings or commutator fuses, right through to potting bar magnets.

Adhesives are the perfect solution for bonding magnets, as modern adhesives not only optimize the joining of housings and magnets, but can also protect and insulate the coil windings.

Adhesives with high adhesion to metals are required for these applications. Since metals are not permeable to UV light, Hoenle offers dual-curing adhesives in addition to thermal cure products. These dual cure adhesives cure primarily by UV light, with a secondary anaerobic or moist curing mechanism for shaded areas.

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

Adhesive Application Areas Viscosity [mPas] Base Curing * Special Properties
  • 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
  • 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
  • Filament winding
250-450 epoxy UV VIS
  • Very good wetting properties
  • Electrically insulating
  • High glass transition temperature
  • Solvent-free
  • Ideal for filament winding
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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

*UV = 320 – 390 nm          VIS = 405 nm

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