KL Seating is a construction machinery seat manufacturer and factory direct supplier. Our customers are machine builders that fit seats on excavators, loaders, rollers and other construction equipment, and distributors and importers that supply replacement seats for those machines.
KL Seating makes construction machinery seats in five models: YL02, YQ40, YQ50, YS2-8 and YS15. Machine builders and distributors use this page to see what the parameter sheet and the drawings state for each model, which documents travel with an enquiry and which supply route fits each type of buyer.
The range has five models. YL02 has a 70 mm mechanical suspension. YQ40 slides in 23 positions. YQ50 has a backrest that sets between 30° and 60°. YS2-8 and YS15 have 40 to 110 mm of suspension travel. The parameter sheet lists excavators, cranes, trucks and buses among the machines these models are made for.
Each line names the model and the figure that marks it out on the parameter sheet.
YL02 construction machinery seat: mechanical suspension with 70 mm of travel, mounting holes at 230, 285 and 330 mm.
YQ40 heavy machinery seat: 570 × 480 × 1160 mm overall, slide in 23 positions.
YQ50: 120 mm of fore-aft travel, backrest from 30° to 60°.
YS2-8: 40 to 110 mm of suspension travel, backrest that folds forward.
YS15 excavator seat: 176 mm of fore-aft travel in 16 mm steps, 40 to 110 mm of suspension travel.
YL02, YQ40 and YS15 have their own model pages. YQ50 and YS2-8 are handled through the parameter sheet and the drawings described below.
Structural engineers at machine builders start from the base hole pattern and the moving envelope of the seat. The five models hold that data in different documents, so the table below lists where each piece sits.
| Model | Base hole data | External drawing |
|---|---|---|
| YL02 | 230, 285 and 330 mm on the parameter sheet | none; requested from the factory |
| YQ40 | hole map on the drawing | available |
| YQ50 | hole map on the drawing | available |
| YS2-8 | not on the parameter sheet; requested from the factory | available |
| YS15 | not on the parameter sheet; requested from the factory | available |
The exchange runs in three steps:
Purchasing receives the same set as the engineer, so the model on the order is the model that was checked. The seat fitment compatibility page lists what to measure on the machine before the first message.
The parameter sheet gives a machine line for most models. Reading it against your own machine produces the first shortlist.
For those machines the model comes from the reply to your enquiry.
Send the machine model and photosAn excavator therefore points to three models, YQ40, YQ50 and YS15, and the choice among them is made on adjustment range and mounting data. Wheel loaders, backhoe loaders, road rollers and skid steer loaders sit under the general construction machinery line, and the sheet carries no model-by-model split for them. For those machines the model comes from the reply to your enquiry.
Each machine type has its own page: excavator seat manufacturer, wheel loader seat manufacturer, backhoe loader seat manufacturer, road roller seat manufacturer and skid steer loader seat manufacturer.
What the reply contains depends on what the request carries:
The reply names one model or compares two or three. Each comparison runs on the figure that decides the model: suspension travel and the 70 mm of YL02, the overall size and 23-position slide of YQ40, the 120 mm travel and backrest sweep of YQ50, the 40 to 110 mm travel of YS2-8 and YS15. It lists which values come from the sheet and which the factory confirms.
Distributors send the end customer's machine model with the old seat photos. A rental fleet or a contractor is the source of that information; the reply goes to the distributor, who passes the model and the documents on.
Send the machine model and photos of the seat base, and we reply with the matching model.
A dash means the parameter sheet lists no value for that cell.
| Parameter | YL02 | YQ40 | YQ50 | YS2-8 | YS15 |
|---|---|---|---|---|---|
| Weight adjustment | 50–130 kg | – | – | 50–120 kg | 50–130 kg |
| Suspension travel | 70mmmechanical | – | – | 40–110mm | 40–110mm |
| Base holes | 230 / 285 / 330 mm | on drawing | on drawing | – | – |
| Cover | PVC | PVC | PVC | PVC | black PVC or fabric |
| Optional | – | armrests, headrests, seat belts | armrests, headrests, seat belts | armrests, headrests, seat belts, electric locks | armrests, headrests, seat belts, electric locks |
| Certification listed | – | CE, ISO | CE, ISO | – | – |
This is the moving envelope an engineer checks against the cab.
YQ40: cushion height 270–335 mm, width 485 mm, depth 470 mm. Backrest 630 mm high and 480 mm wide, adjustable from 80° to 121°. Front and rear cushion height each tilt ±9° (65 mm). The slide moves 120 mm forward and 110 mm back in 23 positions.
YQ50: 120 mm of fore-aft adjustment, backrest from 30° to 60°, seat height adjustment of 60 mm. The YQ50 drawing records a locking mechanism and a switch that sets firmness and height to the operator's weight.
YL02: 190 mm of fore-aft adjustment in 10 mm steps.
YS15: 176 mm of fore-aft adjustment in 16 mm steps, backrest 85° forward and 45° rearward.
YS2-8: backrest folds forward and reclines 27.5° rearward.
YQ40 gives the fullest set of figures. For the others the sheet lists only the rows above; a figure the sheet leaves out is requested from the factory and arrives with the drawing or the enquiry reply.
Construction machinery seats leave the plant through the same four stations as every other KL Seating range, and each series shipment follows that route:
The MES records the run from research and development, purchasing, production and quality inspection through warehousing and shipment. The MES stages are research and development, purchasing, production, quality inspection, warehousing and shipment, and a factory visit can be booked in advance to see them.
Four checks sit around the production route:
CAE structural analysis of the frame at the design stage.
3D scanning of hole positions and frame dimensions.
Pressure distribution testing of the cushion, which looks at how the seat load spreads over the cushion during long sitting.The testing center behind these checks is described on the seat quality testing page.
The YQ40 drawing carries its own requirements for the finished seat.
Requirements printed on the drawing, not inspection results
These are drawing requirements the machine builder can set against its own incoming standard. A buyer asks for the YQ40 drawing and reads the technical requirements block.
KL Seating supplies construction machinery seats through two routes, one for machine builders and one for distributors and importers. Each route starts with a different request and returns a different reply.
The company works in OEM and ODM mode with customized, modular seats. A builder with a defined cab sends the seat base hole pattern, the space envelope and the machine model, and the factory returns the model closest to it together with its drawing. Where the cab needs a different base pattern or option set, the request runs as a custom project, and the change is discussed against the drawing of the nearest model. A builder with a finished seat design sends the drawing, and the production route above applies to it. The OEM and ODM seat manufacturer page covers the programs across all four seat ranges.
Distributors work across the whole KL Seating catalog: forklift, construction machinery, tractor and lawn mower seats from one source. A distributor sends the list of machine models its customers run and the range it wants to hold. We reply with the models that cover that list and the documents for each. Private label seats carry the distributor's own brand; the details sit on the private label and wholesale seats page. Bulk supply of a range can be arranged as a series: the models and options are named on one sheet, and shipments are planned against it. Export markets are Asia, the Americas and Europe.
Either route comes with the same document set: the parameter sheet, the drawing of the model and the certificate copies listed in the documents section below.
Tell us whether you build machines or distribute seats, and we reply with the supply route.
Options listed on the parameter sheet:
| Model | Armrests | Headrests | Seat belts | Electric locks | Cover |
|---|---|---|---|---|---|
| YL02 | – | – | – | – | PVC |
| YQ40 | – | PVC | |||
| YQ50 | – | PVC | |||
| YS2-8 | PVC | ||||
| YS15 | PVC, fabric |
Cover material is PVC on all five models, and fabric is also listed on YS15. Orders name the option set with the model, so the first reply states the model and its options together. The seat accessories page lists the full option range of the factory.
The five models sit on different suspension information.
KL03 is an air bag seat with 180 mm of travel that also lists construction machines, and it is described on the air suspension seats for machine builders page.
An enquiry reply carries a set of documents. Each one has its reader on the buyer's side.
Copies of the ISO 9001:2015, CE, RoHS and REACH certificates. The quality department files these with the supplier record.
Three management system certificates sit alongside the four: environmental management, occupational health and safety management, and energy management. Copies can be requested with the others.The reply is addressed to whoever sent the enquiry. When a builder's purchasing and engineering teams are separate, the set goes to both so each reads the same model and the same figures. Certificate copies carry no numbers on this page; the numbers are on the copies themselves.
Copy the list that fits your role into an email.
The reply names the model for each machine on the list and the documents that go with it.
Machine pages: excavator seat manufacturer, wheel loader seat manufacturer, backhoe loader seat manufacturer, road roller seat manufacturer and skid steer loader seat manufacturer.
Model pages: YL02 construction machinery seat, YQ40 heavy machinery seat and YS15 excavator seat.
Other ranges from the same factory: forklift seat manufacturer and tractor seat manufacturer.
Tell us whether you build machines or distribute seats, and we reply with the supply route.
Send the machine model, photos of the seat base and the role you write from to [email protected], or call +86 177 0272 7677, and we reply with the matching models and the documents for each. The contact page has the enquiry form.
