Standard Class 3 gas lift
Volume office and task seating. EN 16955 Class 3 certified configurations are available by certificate scope.
- Typical stroke
- 50–265 mm
- Rated force
- 350–500 N
Office chair gas lifts, specified the way buyers quote.
Start with Class 3 or Class 4, then define stroke, extended length, force, surface treatment, actuation style and private marking. Final supply is matched to drawing, sample and certificate scope.
Product series
A clearer gas-lift menu for global chair programs.
International buyers usually compare products by class, stroke range, force and special function. We have reorganized the page around that buying logic while keeping Samiktech’s own certification and manufacturing scope.
Certified Class 4 gas lift
Higher-strength seating platforms with Ø28 pressure-tube configurations, including QPQ and hard-chrome routes.
- Typical stroke
- 70–270 mm
- Rated force
- 300–500 N
Long-stroke configuration
For chairs requiring a larger height-adjustment window. Dimensions should be confirmed by drawing or chair geometry.
- Reference stroke
- 200–265 mm
- Use case
- Drafting / high chair
Anti-static option
Project option for ESD-sensitive environments where conductive seating components are required.
- Review items
- ESD path / resistance
- Supply mode
- Custom order
Non-rotating / special function
For designs that need controlled orientation or non-standard movement behaviour. Confirm by sample and test plan.
- Review items
- Rotation / trigger
- Supply mode
- Project review
OEM customized gas lift
Private label, laser marking, black coating, hard chrome, QPQ and packing requirements can be matched to your program.
- Input needed
- Drawing / sample
- Output
- Quoted specification
Chair gas lift / Class 3
Reliable performance for volume seating programs.
EN 16955 Class 3 certified tapered pressure-tube configurations are available for task, office and commercial seating applications.
Chair gas lift / Class 4
Higher-strength platforms with multiple engineering routes.
Certified configurations include Ø28 × 2.5 mm hard-chrome pressure tubes and Ø28 × 2.0 mm QPQ-treated designs, subject to certificate and model scope.
Stroke options
Standard and project-specific height-adjustment ranges.
Force tuning
Rated extension force and tolerance matched to chair geometry.
Surface options
Black coating, hard chrome and QPQ routes by configuration.
Private marking
Traceable OEM identification and production coding.
Specification data
Selection ranges for quotation discussions.
The values below are practical quotation ranges used to start an engineering review. Final dimensions, force tolerance and marking must be confirmed against your drawing or sample.
| Platform | Typical stroke | Extended length | Rated force | Pressure tube / finish | Best fit |
|---|---|---|---|---|---|
| Class 3 | 50–265 mm | 235–705 mm | 350–500 N | Ø28 × 2.0 mm / black or chrome | Standard office chair programs |
| Class 4 | 70–270 mm | 275–693 mm | 300–500 N | Ø28 × 2.0 mm QPQ or Ø28 × 2.5 mm hard chrome | Higher-load seating platforms |
| Long stroke | 200–265 mm | 525–705 mm | 350–450 N | By drawing and chair geometry | Drafting chairs and tall seating |
| Project option | Custom | Custom | By test plan | Anti-static, non-rotating or special finish | OEM / special-function projects |
Model coding
Use one code to communicate the full requirement.
For international quotation, we recommend sending a compact model description with class, stroke, pressure tube, force and finish. This reduces back-and-forth and helps us match the correct certificate scope.
Example
SMT-SC4-100-28×2.5-450N-BK
- SMT = Samiktech
- SC4 = Class 4 chair gas lift platform
- 100 = nominal stroke in mm
- 28×2.5 = pressure tube specification
- 450N = rated extension force
- BK = black coating or customer finish code
Buyer FAQ
Common questions before quoting a chair gas lift.
These answers help purchasing and engineering teams send clearer requirements before sample review.
What is the difference between Class 3 and Class 4 chair gas lifts?
Class 3 and Class 4 gas lifts are selected according to chair design, load expectation and applicable certificate scope. Samiktech supplies certified Class 3 and Class 4 configurations for office chair programs.
Can Samiktech customize stroke, force and surface finish?
Yes. Stroke, extended length, rated force, surface treatment, actuation style and private marking can be reviewed against the customer drawing, chair geometry and certification scope.
What information is needed for a gas lift quotation?
A drawing, reference sample, target stroke, extended length, rated force, surface finish, annual quantity and target market help Samiktech prepare a precise quotation.
Download the gas lift RFQ and drawing checklist.
A buyer-ready PDF covering quotation inputs, drawing symbols, Class 3/Class 4 reference ranges, model coding and certificate matching.
Search by purchasing need
Dedicated pages for the way global buyers search.
These pages help buyers compare the exact gas-lift topic they are searching for, from Class 3 and Class 4 platforms to EN 16955 and BIFMA-related sourcing questions.
Class 3
Class 3 office chair gas lift
Class 4For standard office and task chair programs.
Class 4 office chair gas lift
SolutionsFor higher-strength seating platforms.
Office chair gas lift solutions
EN 16955Heavy-duty, ESD, non-swivel, sit-stand and OEM application guidance.
EN 16955 gas lift manufacturer
China supplierCertification-oriented supplier review.
Office chair gas cylinder supplier China
BIFMAFactory-direct sourcing from Qingdao.
BIFMA tested chair gas lift
Size chartFor buyers asking about ANSI/BIFMA reports.
Office chair gas lift size chart
RFQ guide60mm, 80mm, 100mm and 120mm stroke reference dimensions.
Office chair gas lift RFQ guide
MOQ, packaging, loading data and inquiry template.