
YJ03
- Backrest from 35° to 170°
- Headrest height adjusts through 120 mm when a headrest is fitted
- Turning mechanism that rotates the seat is available as an option
KL Seating is a seat manufacturer and factory direct supplier for combine harvester builders, and for distributors and importers who supply replacement seats to harvesting fleets and workshops. Combine harvesters appear in the agricultural machinery application list of our seat range, next to tractors, seeders and sprayers.
A harvest season puts the operator in the seat for one long shift after another, with the head turning between the header and the grain tank. Send the harvester make and model, photos of the old seat from the front, the side and underneath, and the electrical voltage of the machine. We reply with the matching model.
Work through these five points in order. Each one narrows the choice before the model name is discussed.
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These are the adjustment figures published for the air bag models in our agricultural line.
For a harvester operator who turns often, the useful questions are how far the backrest reclines, how much fore-aft travel the cab leaves, and whether a turning mechanism fits the base.
Send the free space around the seat position and the reply names the model that works within it.



PVC is the main cover material across our seat range. Dust is wiped off a PVC surface as part of the daily routine in the cab. Some models also offer a fabric cover.
Choose the cover from how your fleet is cleaned. A fleet that wipes the cab down every day looks at PVC first. A buyer who wants a fabric surface asks for the models that list it. Tell us the cleaning routine and the color you need, and the reply states which cover is available on the model.
Our agricultural line includes two air bag suspension models. The table gives the figures published for each. These are the options in the line, and the matching of a model to a machine is done against your machine data.
| Item | ![]() YJ03 | ![]() KL03 |
|---|---|---|
| Suspension | Air bag | Air |
| Suspension travel | 80 mm | 180 mm |
| Power supply | 24 V | 24 V |
| Operator weight setting | 50–130 kg | Ask the factory |
| Backrest angle | 35–170° | Ask the factory |
| Fore-aft adjustment | 175 mm | 70 mm forward, 120 mm back |
| Seat depth | Ask the factory | 3 positions, 17.5 mm each |
| Cover | Black PVC or fabric | Ask the factory |
| Drawing | External drawing available | Ask the factory |
The parameter sheet lists YJ03 for tractors, seeders and agricultural machinery in general, and KL03 for tractors, construction machines and agricultural machinery.
Model pages: YJ03 air suspension tractor seat and KL03 tractor seat. For the whole air suspension range see air suspension seats.
YJ03 and KL03 both run on 24 V. The YJ03 drawing marks the air pump motor as 24 V.

A machine without 24 V at the seat position has nothing to power the air pump, so this point is checked before the model is compared.
Confirm the electrical system of the machine at the design stage and put the 24 V requirement into the operator-station interface list beside the mounting data.
Check the machine in front of you. Does it have 24 V at the seat, and did the old seat carry an air pump?
Send the voltage of the machine with your first message, and we reply with the confirmation. Pump current and connector details are not on the published sheet, so we do not print them here. The factory answers those points in the enquiry reply.
For seats suspended without an air pump, see mechanical suspension seats.
Before a harvester seat is ordered, three things are measured on the machine.
At the factory, 3D scanning checks base hole positions and the frame outer dimensions, and the result goes back to the buyer against the model parameter sheet. The seat fitment compatibility guide lists what to measure on the machine before the first message.



The parameter sheet prints machine types against each model, and it holds no model-to-harvester list. We therefore do not name a model for a harvester on this page.
This route works for builders fitting new machines and for distributors replacing seats in the field. The tractor line is covered on the tractor seats page, which carries the same air bag models and the other tractor model side by side.
We reply with the model that matches and with the figures of that model that apply to your machine.



Where a figure is not on the sheet, the reply says Ask the factory and the factory confirms it.
Harvester seats go through the production route used for the agricultural line: foam molding of cushion and backrest, precision stamping of the frame, robotic welding, and assembly of the suspension, slide and chosen options. The MES records quality inspection and delivery as part of one record chain.




The pressure distribution comfort test is run on the seat cushion and records how pressure spreads over the surface while a person sits on it. No test values are published here.
CAE structural analysis is used on the seat frame at the design stage.
3D scanning checks hole positions and frame dimensions.
The testing center covers more than 300 m² with more than 20 devices and more than 30 test items. We make no claim about service life on this page.
Supplied as OEM and ODM customers with customized, modular seat systems. The seat is fixed from your cab drawing and hole pattern, and structural changes go through our R&D center.
OEM and ODM seat manufacturerSupplied as wholesale and private label customers. The line can be matched to the machines they serve, carry their own brand, and be arranged as bulk supply by series with the models and options written on one sheet.
Contact pageFactory visits can be arranged by appointment.


Copy this list into your email and fill in what you have.
The reply names the model, states whether 24 V is needed and lists the figures the factory still has to confirm.
Email the enquiry list
Send the harvester make and model, the old seat photos and the voltage of the machine to [email protected], or call +86 177 0272 7677. The enquiry form is also available on the contact page.