Backrest & Headrest Mechanisms

CSS 4

Product Code ZM6-003

CSS 4 is the general-purpose member of the CSS seat mechanism family, positioned to balance cost against durability. It offers a repeatable assembly time in series production and…

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Material
Steel
Custom Production
Available in different sizes, materials and surface finishes

Pricing depends on the project. Send us your dimensions and quantity and we will reply the same day.

  • Made in our own facility
  • Custom sizes available
  • Same-day reply

Product Information

Product Overview

CSS 4 is the general-purpose member of the CSS seat mechanism family, positioned to balance cost against durability. It offers a repeatable assembly time in series production and predictable performance. It is widely used in office, home and waiting-area furniture.

Product Advantages 4 points
  • Balanced positioning between cost and durability.
  • Repeatable, predictable assembly time in series production.
  • Shares assembly logic with the CSS family, so switching segments needs no line changes.
  • Broad usage range from office to home furniture.
Technical Information 2 values
CSS 4 — Technical Information
Material Steel
Custom Production Available in different sizes, materials and surface finishes
Technical Drawings 2 drawings

These drawings are here to show how the mechanism works and how it goes together. They are not to scale, so please do not measure off them. The numbers on each drawing match the notes below it. If you need a dimensioned technical drawing for your own project, write to us and we will prepare one.

CSS 4 — Kit contents — what is in the box

Kit contents — what is in the box

  • 1 Link plate. Flat steel with three holes and rounded ends; this is the main part that carries the opening and closing movement.
  • 2 Long mounting screw. Fixes the link plate to the wooden frame of the seat.
  • 3 Short bolt. Used at the pivot — the point the link plate turns around.
  • 4 Nut plate. The hex nut is welded on, so the bolt threads straight into it and you do not have to hold a nut while assembling.
  • 5 Roller cap. Fits at the pivot point; it stops metal rubbing directly on metal, which prevents squeaking and wear.
CSS 4 — Assembly order — how the parts stack up

Assembly order — how the parts stack up

  • 1 Wooden rail: the load-bearing batten in the seat frame. The mechanism fixes to this.
  • 2 The nut plate goes behind the timber; the bolt threads into it.
  • 3 The link plate sits in front.
  • 4 The roller cap fits over the pivot point.
  • 5 The bolt passes through the whole stack and tightens into the nut plate.
  • 6 The arrow shows the direction the parts come together. The lower figure is how the joint looks once assembled.
Usage Areas 3 areas

Office chairs

preferred in seating used throughout the working day.

Home furniture

used in living-room and lounge seating.

Waiting areas

suitable for frequently used shared-space furniture.

Frequently Asked Questions 4 questions
What usage intensity is CSS 4 suited to?

It is positioned for regular daily use in homes, offices and waiting areas. For projects with very high usage intensity we recommend considering the upper-segment option.

Does switching within the CSS family affect the production line?

Because family members share assembly logic, changing segment usually requires no change to the line layout. Share your project dimensions and we can confirm precisely.

What material is CSS 4 made from?

The standard set is made of steel, protected with an electrostatic coating. For different sizes, materials and surface treatments we can manufacture on a project basis.

Which type in the CSS family should I choose?

The choice follows usage intensity and budget: CSS 3 (ECO) is the entry level, CSS 4 the balanced option, and CSS Lux is for upper-segment use. Tell us how often your project will be used and we will decide together.

If your question is not answered here, just ask. Send the dimensions and quantity and we will reply the same day.

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CSS 4 Priced per project