Additional features

Aperçu

  • Overview

    • EJOT duoHARDtip® - Process-reliable joints for advanced high-strength materials
    • EJOT® HardTip - Fastening solution for direct assembly into steel
    • MAThread®/MATpoint® - Anti cross-threading points
    • EJOT® SpringHead - Screw head with integrated spring element
    • EJOT Under-Head Serrations

Franck SIES

Technicien de laboratoire

Arnaud GUG

Responsable technique industrie

IND-Teaser-CADundmehr2-EJOT.jpg

CAD & More sur ejot.com

Votre enregistrement sur notre site vous donnera accès aux nombreux services que nous mettons à votre disposition : données CAO, informations produits, PDF des dessins techniques de nos produits DELTA PT®, SHEETtracs® et ALtracs® Plus. En outre, CAD & more vous offre la possibilité de créer une simulation numérique d'un assemblage ou de vérifier leur faisabilité avec les "APPLICATION CHECKs".


CAD & more

EJOT duoHARDtip® - Process-reliable joints for advanced high-strength materials

DuoHARDtip

With the combination of two different materials, the EJOT duoHARDtip® screw offers both - a conventionally hardened shaft and an advanced high-strength point. This offers the possibility of direct fastening in advanced high-strength steel materials, setting new standards in terms of the possible application range. The duoHARDtip®complies with highest corrosion requirements, furthermore it reliably prevents hydrogen-induced embrittlement. This is especially crucial to those applications where case-hardened screws are not permitted. 
 
Thread geometries of EJOT duoHARDtip®:
- Spiralform® 
- SHEETtracs® 
Further thread geometries upon request.

EJOT® HardTip - Fastening solution for direct assembly into steel

With the HardTip process, the forming zone of the thread point of a screw is additionally inductive-hardened after previous hardening and tempering or case hardening. Thus, materials which have too high a strength for conventionally hardened screws can also be fastened in a self-tapping way. EJOT® HardTip screws are used if case-hardened fastening elements are not permitted or conventionally hardened screws would fail because the screw-in material is too strong. 
 
Thread geometries EJOT® HardTip:
- Spiralform® 
- SHEETtracs® 
Further thread geometries upon request.

MAThread®/ MATpoint® - Anti cross-threading points

With the patented "anti cross-threading" points MAThread® and MATpoint® for metric standard threads according to ISO 965-2, EJOT is licensee of MAThread Inc., Whitmore Lake, MI, U.S.A. "Cross threading" is caused by the screw being applied at an angle to the female thread. In the worst case, a new thread is formed or the nut or screw thread is damaged. This ultimately leads to the fact that the screw can not be fastened and the connection fails. The MAThread®/MATpoint® design prevents this "cross threading" and enables shorter assembly times. It reduces or eliminates outages with all negative consequences such as downtimes, reworks, scrap and service effort.

EJOT® SpringHead - Screw head with integrated spring element

Every screw connection loses clamp load after assembly due to subsidence. If the clamp load falls below a critical level, the connection fails, for example through loosening, separation or a loss of electric contacting. These failures can be prevented by increasing the elasticity in the screw connection, for example with the integration of spring elements into the screw connection. The innovative EJOT® SpringHead geometry realises this resilient feature and reliably compensates for subsidences without additional, conventional spring elements. The spring integrated in the screw head enables a better clamp load retention under dynamic and thermal stress as well as a permanent electrical contacting. 
 
Thread geometries EJOT® SpringHead:
- DELTA PT®
- ALtracs® Plus
- metric screws
Further thread geometries upon request.

EJOT Crantage Sous Tête

1. EJOT CONLOK® - Electric contact
2. EJOT VIBRALOK® - Thread lock
3. Locking serration Thread lock
4. Friction serration Higher Stripping Torque TS
5. EJOT CONLOK® - Ring cutting edge

Le crantage sous tête EJOT CONLOK® se caractérise par un ensemble interrompu d’arêtes semi-circulaires. Nombre d’arêtes au choix selon l’application. Seule la géométrie est prédéfinie.
Avantage :
- garantie d'un contact électrique entre les pièces et les éléments d'assemblage.
- couches de protection de surface jusqu'à une épaisseur de 70µ (peinture en poudre) rayables
- augmentation des couples de serrage et de desserrage, grâce à une conception libre des dents

 

Le crantage sous tête EJOT VIBRALOK® a été conçu pour protéger les assemblages métalliques exposés aux vibrations contre le desserrage. Des études externes ont confirmé la fiabilité de ce profil sous tête.
Avantage :
- Augmentation des couples de desserrage
- Protection contre le desserrage en cas de vibrations