Holmatro has developed a unique range of double-acting locknut cylinders. Because of the unique construction, the closed height stays low, which makes the cylinders suitable for many different applications.

These locknut cylinders offer significant advantages in safety, maintenance and durability. The cylinders are equipped with a smart return-plunger instead of the usual stop ring. This unique construction increases the pressure surface, resulting in more power with a smaller diameter. By making use of integrated safety valves, the cylinders are protected extra against overpressure on the return side. Multiple start thread is provided on the plunger for positioning the locknut quickly. Dirt on the plunger can be removed more easily the rounded thread.