Precision, Reliability and Consistency for Seat Height Adjustment.

In the world of seating, every detail counts. DONATI COLUMN is the result of extensive experience in the design and manufacturing of chair components and combines technical expertise with a comprehensive service approach.
The new chair cylinder bears the DONATI COLUMN brand name as an unmistakable mark of quality.
The marking ensures traceability and compliance with production standards without affecting the design of the final product. In this way, Donati ensures consistent quality control while offering customers maximum design and conceptual freedom.

Certified Quality

All Donati chair cylinders are tested and certified in accordance with EN 16955 Class 4, which guarantees the highest standards of safety and durability.

TÜV certification

The DONATI COLUMN chair cylinders are TÜV certified, confirming compliance with strict safety, strength, and durability standards.
Independent testing ensures reliable long-term performance and consistent operation for professional office chairs, enhancing user comfort, stability, and protection during everyday use.

In-House Testing

Quality control is supported by an in-house laboratory equipped with specialized equipment for column testing. Every stage is monitored to ensure consistent performance over time.

Measurement of specified forces (F1–F4, friction, etc.)

Durability testing in combination with our components and complete seating systems

Measurement of activation forces and geometric dimensions

Verification of the column’s side play measurement

Customization for Tailored Solutions

In addition to its standard product line, Donati offers the option to customize chair cylinder to meet specific customer requirements.

Customizations may include:

— Chair cylinder with special functions (auto-return, fixed),
— Overall lengths,
— Outer tube diameters,
— Surface finishes,
— Actuation type (standard, adjustable, with Bowden cable),
— Higher strength requirements.

This flexibility allows us to develop solutions that are perfectly tailored to each of your project.

Available Products and Solutions

In addition to chair cylinders, Donati offers other standard models with various technical specifications and features. Donati catalogue include a comprehensive range of products designed to meet any requirement in chair design and manufacturing. Through continuous development, we are able to offer innovative solutions to expand and enhance your product lineup.