Special Screws for Lamellar Joints

Lamellar couplings are essential components in power transmission systems, used in critical industries such as petrochemical, paper, shipbuilding, cement, energy and mining.

The problems of laminar joints and the importance of fastening

The main function of laminar joints is to ensure perfect alignment between connected elements, minimizing torsional stresses and vibrations during operation. However, to maintain reliable operation over time, flap joints require extremely precise fastening that can withstand high loads and continuous stresses.

One crucial aspect is the initial alignment of the joint: if centesimal accuracy is not ensured from installation, operational stresses can compromise the integrity of the system, leading to premature wear or failure.

For this reason, the choice of screws and fasteners plays a crucial role in the durability and reliability of transmissions.

The characteristics of laminar joint screws

To meet the precision and strength requirements of laminar joints, EFS provides special custom-made screws designed to ensure secure and durable fastening.

In this article we present a special screw made according to the design of one of our customers who manufactures laminar joints. The screw has the following characteristics:

• Flat countersunk head with recessed hexagon, allowing efficient installation and even load distribution.
• Specific dimensions M27 x 2 (fine pitch) x 80, designed to fit perfectly into laminar joints.
• Material 42CrMo4 (chromium-molybdenum), hot-forged and hardened and tempered in Cl. 12.9: provides optimal hardness and strength over time, which are essential for operating in critical environments.
• Shank ground with centesimal precision to ensure perfect alignment and minimize the risk of mechanical play.

Special screws for laminar joints: why choose EFS

Our flap joint screws are made to customer specifications and thus offer tailor-made solutions in the most demanding industries. Due to their high precision and strength, they ensure stable and secure fastening, reducing the risks of misalignment and premature wear.

Whether for compressors, industrial equipment or power transmission systems, EFS provides custom-made screws that ensure reliability and durability.