Looks at
The seat frame, on screen at the design stage.
Testing center for machine builders, OEM and ODM customers and distributors
Machinery Seat Quality Testing and Inspection Equipment:Four Test Methods, One Testing Center
KL Seating is a machinery seat manufacturer and supplier with its own precision testing center, built for machine builders, OEM and ODM customers, and the distributors and importers who stock our seats. The center covers 300+ m², holds 20+ pieces of testing equipment and runs 30+ test items, together with an independent R&D center.
Pick a test station below to see which product lines it serves.
- Precision testing center of 300+ m² with 20+ devices and 30+ test items
- 3D scanning, pressure distribution comfort test, shock absorber analysis, CAE structural analysis
- MES covers R&D, purchasing, production, quality inspection, warehousing and delivery
- ISO 9001:2015, CE, RoHS and REACH certificates
- Seat manufacturer since 2007, own brand KL Seating since 2016
Test stations
Forklift seats
- 3D scanningBase holes and frame outline
- Cushion pressure testSeat cushion
- Shock absorber analysisKL01, KL11, YY53
- CAE frame analysisFrame at design stage
Construction machinery seats
- 3D scanningBase holes and frame outline
- Cushion pressure testSeat cushion
- Shock absorber analysisYL02 mechanical suspension
- CAE frame analysisFrame at design stage
Tractor seats
- 3D scanningBase holes and frame outline
- Cushion pressure testSeat cushion
- Shock absorber analysisModels with a shock absorber; air bag testing not published
- CAE frame analysisFrame at design stage
Testing centerFour methods, three product lines.No values published here.
- 300+ m²Precision testing center
- 20+Pieces of testing equipment
- 30+Test items
Testing Center Overview: 300+ m², 20+ Devices, 30+ Test Items
The precision testing center works with the independent R&D center. The four methods below are the ones we describe in public, and each has a section of its own.
The seat itself is made on our own automated lines: foam molding for cushion and backrest, precision stamping for frame and base parts, robotic welding for the frame, then assembly of suspension, slide rails and the options you chose. The testing center works on that same product, not on a sample made elsewhere.
At the design stage
It checks structures before parts are made.
During model matching
It checks the hole positions and outline of a seat against the figures that go on the parameter sheet.
On comfort and suspension
For the comfort and suspension side of a model it looks at the cushion and the shock absorber.
What buyers receive
Buyers meet the results in two forms: the model parameter sheet and the drawing that goes with the model.
Method 01
3D Scanning: Base Hole Positions and Seat Frame Outline
Base holes decide whether a seat bolts onto a machine floor, and the frame outline decides whether it fits the free space in the cab.
- Looks at
- The position of the base holes and the outer shape of the seat frame.
- Used on
- Forklift seats, construction machinery seats and tractor seats all pass through this check of holes and outline.
- You can ask for
- The model parameter sheet, with published hole figures, and the drawings that carry a hole map. Where a model has no hole figure on its sheet, the value is marked Ask the factory and goes into your enquiry.
- Not published here
- No scan values, no deviation figures and no pass limits.
Method 02
Pressure Distribution Comfort Test: Seat Cushion Under Long Sitting
It is used to assess how pressure spreads over the cushion during long periods of sitting: a forklift operator on a long shift, an excavator operator holding one posture, a tractor driver on rough ground.
- Looks at
- The seat cushion, and how pressure spreads over it in long sitting.
- Used on
- Part of the testing routine for the forklift, construction machinery and tractor lines.
- You can ask for
- The model parameter sheet, which lists the cushion-related adjustments each model offers, and the cover options: PVC is the main cover in the series and some models offer fabric.
- Not published here
- No pressure maps, no pressure figures, and no claim about seat life or endurance.
Method 03
Shock Absorber Mechanical Analysis: Suspension Travel and Weight Band
The analysis confirms how the suspension travel works together with the operator weight band of the model.
- Looks at
- The shock absorber alone, taken as a single unit from a mechanical suspension seat.
- Used on
- The mechanical suspension models of the forklift line and of the construction machinery line: The mechanical suspension seats page explains the suspension type.
- You can ask for
- The parameter sheet with the weight band and suspension data that the sheet publishes for the model. Published travel values exist for some models only, and a missing value is marked Ask the factory.
- Not published here
- No analysis curves and no force figures.
Air bag models: no test description on this site. The YJ03, the KL03 and any other air bag model on our list are not described here. The air suspension seats page lists what is published for them.
Method 04
CAE Structural Analysis: Seat Frame Load Check at the Design Stage
The frame is checked in the model on screen, before tools and parts exist.
Used on
Frame design across the forklift, construction machinery and tractor lines, and every custom structure that comes from the R&D center. When a machine builder sends a drawing for an OEM or ODM seat, this step looks at the frame before it is built. The OEM and ODM seat manufacturer page shows how the drawing enters the process.
You can ask for
The model parameter sheet and the drawing for the model. Drawings in our library for YJ03, YY08, YQ40 and YQ50 are sent on request, and the parameter sheet governs wherever a drawing and a sheet differ.
Not published here
No load cases, no stress results and no safety factors.
Test Coverage by Product Line
The table shows which of the four methods the factory describes for which product line. A blank cell would be a method with no public description for that line.
For a machine that is not in this table, send the machine type and old seat photos and we reply with the matching model and its documents. The excavator range is on the excavator seats page.
| Product line | 3D scanning | Cushion pressure test | Shock absorber analysis | CAE frame analysis |
|---|---|---|---|---|
| Forklift seats | Base holes and frame outline | Seat cushion | KL01, KL11, YY53 | Frame at design stage |
| Construction machinery seats | Base holes and frame outline | Seat cushion | YL02 mechanical suspension | Frame at design stage |
| Tractor seats | Base holes and frame outline | Seat cushion | Models with a shock absorber; air bag testing not published | Frame at design stage |
| The suspension seat families are covered on the suspension seats page. | ||||
MES Record Chain: Quality Inspection and Delivery in One Trail
The factory runs MES across the whole chain. Quality inspection is one stage inside it and delivery is the next stage, so both sit in the same record trail as production.
Forklift, construction machinery and tractor seats all run on this one chain. PLM, WMS and ERP run alongside MES. The factory also holds a Jiangxi provincial digital development level certificate for manufacturing enterprises, at level L6.
What we do not describe here: the content of the records, how long they are kept and what a batch record would show. This page makes no claim about batch records.
- 01
R&D
- 02
Purchasing
- 03
Production
- 04
Quality inspection
- 05
Warehousing
- 06
Delivery
All six stages sit in one record trail.
Documents Buyers Can Request From the Factory
A supplier approval file starts with paper. These are the documents you can ask for. This site shows certificate names only; the factory sends the copies to a buyer who asks.
Model parameter sheet
With the figures published for the model.
Model drawing
Where one exists: YJ03, YY08, YQ40 and YQ50 are in our library.
Certificate copies
ISO 9001:2015, CE, RoHS and REACH.
Drawing requirements, not inspection results
What the YQ40 drawing requires
The drawing carries its own technical requirements. The YQ40 heavy machinery seat page sets out the model.
- Seams stitched with thread of not less than 30 N
- Stitch pitch of 3 to 5 mm
- Rust treatment of the frame and exposed parts
- Welded assemblies without misalignment, cold welds or missing welds
Certificates and Recognitions on the Factory Record
Names only. The about page tells the company story behind these certificates.
- ISO 9001:2015 for the quality management system
- CE, RoHS and REACH
- Environmental management system certification
- Occupational health and safety management system certification
- Energy management system certification
- Jiangxi provincial manufacturing enterprise digital development level certificate, level L6
- National high-tech enterprise and provincial specialized and innovative enterprise
Factory Visit and Audit Booking
The factory accepts visits and audits by appointment. A buyer who wants to see the testing center, the automated lines and the R&D center writes to [email protected]. The factory does not publish costs or visit times on this site; the details are settled in the reply.
- Companythe company name
- Peoplethe people who will come
- Topicsthe topics to cover
Bring the parameter sheet of the model under review and the drawing of your seat position if you have one, so the visit can follow the real model.
What We Do Not Publish
This section lists what is absent from our public pages. A buyer who needs any of it asks the factory, and the answer is settled in the enquiry.
An unknown value is marked Ask the factory and is never replaced by an estimate. Figures on our model pages come from the parameter sheet, and drawing requirements are labeled as drawing requirements.
- Test values of any kind from the testing center, and pass or fail limitsAsk the factory
- Sampling ratios and reject ratesAsk the factory
- The names of outgoing inspection documentsAsk the factory
- Life, vibration, endurance, ROPS and FOPS statementsAsk the factory
- Test descriptions for air bag modelsAsk the factory
- Warranty termsAsk the factory
- Any statement that the factory measured a model to a given figureAsk the factory
Send the Machine and the Old Seat: Model Match and Document Request
For a model match, send the details on the right and we reply with a matching model. The air bag models of the tractor line, YJ03 and KL03, carry a 24 V supply, so the voltage of the machine goes into the first message. The routine is on the seat fitment and compatibility page.
Say in the message which documents you want: the parameter sheet, the drawing, certificate copies or a visit booking.
Machine type
The type of machine the seat goes into.
Old seat photos
From the front, the side and underneath.
Base holes and voltage
The base hole pattern and the machine voltage.
The documents you want
Parameter sheet, drawing, certificate copies or a visit booking.
Send Your Machine Details to the KL Seating Sales Team
Send the machine type, the old seat photos, the base holes, the machine voltage and the documents you want. We reply with the matching model and mark what is Ask the factory.
- Email[email protected]
- Phone+86 177 0272 7677
- Send: machine type · old-seat photos and base holes · machine voltage · the documents you want
More contact options are on the contact page.