These high-quality products provide excellent, maintenance-free vibration damping until the next scheduled major overhaul of the bogies.

After that, and depending on the configuration, the product can be replaced with a new mechanical damper or overhauled at a specialized workshop.

State-of-the-art manufacturing technologies are used in the production line for these new mechanical dampers, enabling a high degree of automation and eliminating unnecessary steps.

Thanks to the intelligent damper design and the efficient manufacturing process, we can offer you these mechanical dampers at an attractively low price

These sealed dampers have been optimized to achieve the lowest possible purchase price without compromising product quality.

In our sealed dampers, the oil flows in two directions within the piston. The damper is designed so that the damping forces are symmetrical during both the extension and compression strokes.

During the extension stroke, damping is provided by a valve block located below the piston, while during the compression stroke, the valve block above the piston generates the desired damping forces.

The technical dampers are equipped with a relief valve for higher damping speeds. This relief valve limits the maximum forces generated by difficult road conditions.

This feature enhances passenger comfort and protects both the damper and the vehicle mounts from excessive forces.

Throttle damping at low damper speeds

Main valve damping at medium damper speeds

Relief valve at high damper speeds

These dampers are equipped with the following track-specific features:

• Robust construction to extend service life.
• Symmetrical damping force during both compression and extension strokes.
• Linear damping rate up to a freely definable blow-off point.
• Serviceable or sealed design, depending on customer requirements.
• No metal-to-metal contact due to the use of a piston guide band and synthetic piston rod seal
• High-quality rubber-to-metal bushings
• Low-noise valve systems

Features

Thanks to the unique valve system of the sealed dampers, nearly any required characteristic can be achieved within a very narrow tolerance range.

General Specifications

The following maximum damper rates and damping forces apply to the various types of sealed dampers:

Type 90

Max. damping force 10 kN

Max. damping rate 35 kNs/m

Dust cover/outer tube Ø 80 mm/Ø 70 mm

Type 97

Max. damping force 15 kN

Max. damping rate 100 kNs/m

Dust cover/outer tube Ø 80 mm/Ø 70 mm