The two managing directors Alexander Voulgaris and Arnold Sampl (AVS) have more than 25 years of know-how in the development and the production of hydraulic rotator systems. Since 2011, the company is managed as a limited liability company. Mr. Sampl has many years of experience in manufacturing as a mechanical engineering master.

Through further developments of the inventions by Andreas Voulgaris, our rotators have been upgraded to a new technical standard. The entire model range was revised and new inventions and patents were used!

Thanks to new production methods and logistics initiated by Mr. Arnold Sampl, delivery times can be specified, which makes a significant contribution to customer satisfaction. In addition, the company AVS has a state-of-the-art CNC production!

The further development of materials and technology is based on many years of experience in mechanical engineering! The assembly and quality control is done manually with each hydraulic motor leaving our factory. This guarantees highest precision and production quality - made in AUSTRIA.

Thanks to new innovative technologies and the proven reliability of our rotators, we can look to the future with confidence!

Archimedes Gerotor Principle
Our superior drive technology with gerotor principle is based on a strong forged drive shaft made of special steel and withstands the highest bending moments.

Robust & Compact Design
Our low-wear control system allows a long service life at compact dimensions and common connection dimensions.

High Bending Moments & Loads
Our rotators offer high bending moments and, thanks to tapered roller bearings and double-bearing drive shafts, also enormous radial and axial load capacities.

Uniform & Compatible Hole Circles
Every hydraulic rotator available on the market can be replaced with an AVS rotator with identical mounting dimensions. We are happy to help you find the right type!

Powerful Start-Up & Smooth Braking
AVS rotators offer a powerful, slow and smooth start-up and, thanks to the construction-related positioning brake, also a smooth braking behavior.

High Quality Sealing System
Exterm resistant, twisted and hydrolysis resistant special seals ensure smooth operation over a wide temperature range.

AVS - Model ARH 70-2.1 -Hydraulic Rotator for Excavator and Construction Machinery