Tractor Seat Manufacturer:Air Suspension Models With80 mm and 180 mm Travel
KL Seating builds tractor seats in three models. YJ03 and KL03 are air suspension seats that run on 24 V, with 80 mm and 180 mm of travel. YY08 has 80 mm of suspension travel and a PVC cover. Each model has its adjustment ranges written down, and the two with drawings carry a general tolerance table on the sheet.
KL Seating is a tractor seat manufacturer and supplier to tractor and agricultural machine builders, and to distributors and importers who supply replacement seats for tractors already in the field. The tractor range has three models. YJ03 is an air suspension seat with 80 mm of travel. KL03 is an air suspension seat with 180 mm of travel. YY08 has 80 mm of suspension travel and a PVC cover.
Both air suspension models take a 24 V supply. Send the supply voltage of your machine, together with a photo of the seat you are replacing or the cab it goes into, and we reply with the model that fits. If you want to compare first, the three models sit side by side in the specification table below.
Own foam molding, precision stamping and robotic welding, 500,000 seats a year
ISO 9001:2015, CE, RoHS and REACH
Parameter sheets for all three models, external drawings for YJ03 and YY08
Building seats since 2007, own brand KL Seating since 2016
Model range
Tractor Seat Range for Machine Builders and Distributors: YJ03, KL03 and YY08 by Machine Type
Three models make up the tractor line. Each entry gives the model, its suspension travel and the machine types printed against it in the parameter sheet.
YJ03
80mm
YJ03. Air bag suspension, 80 mm of travel, operator weight setting 50 to 130 kg. The sheet lists it for tractors, seeders and agricultural machinery in general. Model page: YJ03 air suspension tractor seat.
KL03
180mm
KL03. Air suspension, 180 mm of travel, seat depth in three positions of 17.5 mm. The sheet lists it for tractors, construction machines and agricultural machinery. OEM and ODM are accepted. Model page: KL03 tractor seat.
YY08
80mm
YY08. Suspension travel 80 mm, operator weight setting 50 to 120 kg, PVC cover. The sheet lists it for tractors, seeders and agricultural machinery.
The machine types come straight from the Application line of each model in the parameter sheet. YJ03 and YY08 are listed for tractors and seeders on the same sheet. KL03 is listed for tractors and for construction machines. Ask for the sheet and read that line against your own machine list.
Travel selection
Suspension Travel Selection: 80 mm on YJ03 and YY08, 180 mm on KL03
Suspension travel is the first figure to read on a tractor seat. The three models give two values. YJ03 and YY08 have 80 mm. KL03 has 180 mm, which is the longest travel published for any KL Seating model on this site and the model built for rough field work.
The next check after travel is the operator weight setting, because the suspension is set for the person who sits on it. YJ03 covers 50 to 130 kg. YY08 covers 50 to 120 kg. The KL03 weight setting is confirmed by the factory when you enquire, so send the operator weight range with the machine details.
The two published bands overlap from 50 to 120 kg. Above 120 kg the published choice narrows to YJ03, whose band runs to 130 kg, because YY08 stops at 120 kg. A fleet with operators at both ends of the weight range is therefore a reason to name YJ03 or to ask us about KL03 in the first message.
This is how a selection runs with us:
You tell us the machine type and the work it does, for example tillage, hauling or seeding.
You read the suspension travel of the seat that is on the machine today, or the travel your cab design allows.
You give the operator weight range.
We answer with the model, and say whether the 24 V supply is needed.
The step buyers most often get wrong is the second one. A seat swapped for a different travel changes how the cab sits around the operator, so the travel on the old seat and the space under the cushion are the two things to measure before an order. Send both and the model choice takes one reply. The reply carries the model name, the figures on that model's sheet that apply to your machine, and the figures the factory still has to confirm.
For a full comparison of air suspension models across the range, see air suspension seats.
Specification table
Specification Table: Three Tractor Seat Models Side by Side
Specification table of YJ03, KL03 and YY08
Item
YJ03
KL03
YY08
Suspension
Air bag
Air
—
Suspension travel
80mm
180mm
80mm
Power supply
24 V
24 V
—
Operator weight setting
50–130 kg
—
50–120 kg
Backrest angle
35–170°
—
—
Fore-aft adjustment
175 mm
70 mm forward, 120 mm back
70 mm forward, 60 mm back
Seat depth
—
3 positions, 17.5 mm each
—
Size
525 × 610 × 780 mm
—
—
Cover
Black PVC or fabric
—
PVC
OEM and ODM
—
Accepted
—
A dash marks a figure that is not on the published sheet. Those values are confirmed with the factory on enquiry.
24 V supply
24 V Supply for Air Suspension Tractor Seats: YJ03 and KL03
24V
YJ03 and KL03 are the two air suspension models in the tractor line, and both run on 24 V. The YJ03 drawing marks the air pump motor as 24 V. KL03 runs on the same 24 V. A machine without a 24 V supply has nothing to power the air pump motor, so this point is settled before the model is.
01
Machine 24 V
The machine electrical system provides 24 V.
02
Seat position
Is 24 V available at the seat position?
03
Air pump motor
The YJ03 drawing marks the air pump motor as 24 V.
04
Air bag
YJ03 gives 80 mm of travel and KL03 gives 180 mm.
Power path schematic · not a wiring diagram
What each buyer checks
Machine builders. The cab or platform wiring at the design stage. Does the machine electrical system provide 24 V at the seat position?
Replacement distributors. The machine being repaired. Does it have 24 V at the seat, and did the old seat carry an air pump?
Where the voltage appears in our documents: the Power supply line of the specification table above, the technical data on the YJ03 drawing and the first items of the enquiry list at the foot of the page. A machine builder puts the 24 V requirement into the operator-station interface list next to the mounting data. A distributor with a mixed fleet asks the question per machine, because tractors of different builds in one workshop do not share one electrical system.
The reason this sits ahead of the rest of the specification is practical. The power supply belongs to the machine, and it cannot be changed from the seat side.
What we need from you
What we need from you is short. Send the voltage information of the machine and a photo of the old seat's underside where any pump or wiring sits. We reply with a confirmation of which model fits.
Underside photo of the old seat
Underside photo of the old seat
Some figures are not on the published sheet. The pump current draw and the connector type are among them. We do not print numbers that are not on the sheet. Send the electrical details of your machine and the factory answers each point in the reply.
KL03 has no drawing on file, so its electrical confirmation comes from the factory, not from a drawing. For the air suspension range as a whole, see air suspension seats.
Adjustment ranges
Adjustment Ranges: Backrest Angle, Fore-Aft Travel and Seat Depth by Model
Tractor work asks the operator to sit for long stretches and to turn toward the implement. The adjustment ranges below are the published figures for each model.
YJ03
YJ03. Backrest from 35° to 170°. Fore-aft adjustment 175 mm. With a headrest fitted, the headrest height adjusts through 120 mm. A turning mechanism is available as an option.
Backrest angle35 to 170°
Fore-aft adjustment175 mm
Headrest height120 mm
KL03
KL03. Fore-aft adjustment of 70 mm forward and 120 mm back. Seat depth adjusts in three positions of 17.5 mm each.
Fore-aft adjustment70 mm forward120 mm back
Seat depth3 positions 17.5 mm each
Backrest angle—
YY08
YY08. Fore-aft adjustment of 70 mm forward and 60 mm back. Operator weight setting 50 to 120 kg.
Fore-aft adjustment70 mm forward60 mm back
Operator weight setting50 to 120 kg
Backrest angle—
The two fore-aft figures for KL03 and YY08 are written as forward travel and back travel and are not added together on this page. If your cab needs a total, send the cab dimensions and we answer against them.
Where the machine points
Model Routing for Machine Builders and Distributors: Air Suspension, Mechanical, Harvester, Seeder
The tractor line connects to other pages on this site, so a buyer can go where the machine points.
Mechanical suspension models, which on the published sheet are KL01 at 50 mm, YL02 at 70 mm and YS15 at 40 to 110 mm: mechanical suspension seats. The two air suspension models in the tractor line are YJ03 and KL03.
Single-model pages exist for YJ03 and KL03. YY08 is covered on this page.
Model match
Model Match for Tractor Builders and Distributors: Send Machine Voltage and Old Seat Photos
Write down the supply voltage of the tractor, take photos of the seat you are replacing, and send them to us. We reply with the model that fits and tell you if the air pump power needs checking.
Email [email protected], or use the enquiry list at the foot of this page.
Factory Direct Cushion Foam Molding and Pressure Distribution Testing
Foam molding
Tractor seats go through foam molding, precision stamping, robotic welding and assembly of the suspension, slide rails and chosen options. The step that decides how the seat feels after a long day is the cushion, and it is the one covered here.
The cushion and the backrest are formed by foam molding on our own lines. The testing center is a space of more than 300 m² with more than 20 devices and more than 30 test items. One of those items is the pressure distribution comfort test.
300+ m²20+ devices30+ test items
Pressure distribution test
The test looks at the seat cushion. It records how pressure spreads across the cushion surface while a person sits on it, and the design team reads that record.
Posture and seat depth
The adjustment ranges on this page affect what the cushion has to carry. YJ03 reclines from 35° to 170°, so the cushion and backrest support the operator in many postures. KL03 has seat depth in three positions of 17.5 mm, so the cushion contact length under the thigh changes with each position.
Other checks in the same testing center cover other parts of the seat. CAE structural analysis is used on the seat frame and 3D scanning on frame and hole dimensions. The pressure distribution test is the one that speaks about the cushion, so a question about cushion shape or seating posture goes to it, and a question about frame strength goes to the CAE analysis.
No test values are published on this page, and we make no claim about service life. What a buyer receives for the cushion is the model's parameter sheet. If your machine has a specific posture or cab space, send it with the enquiry and the design team answers from there.
Cover and options
Cover Materials and Colors: PVC on YJ03 and YY08, Fabric Option on YJ03
Cover materials and options listed per model
Item
YJ03
KL03
YY08
Cover Materials and Colors
Cover
Black PVC or fabric.
Cover material is confirmed with the factory on enquiry.
PVC. The drawing lists black as the standard color, with yellow, blue or red as options.
Armrest, Headrest, Belt, Document Bag and Swivel: Options Listed per Model
Headrest
Listed
Option list confirmed with the factory on enquiry.
—Not listed
Safety belt
Listed
Listed
Document bag
Listed
—Not listed
Armrest
Listed
—Not listed
Turning mechanism
Listed
—Not listed
The full option set across the range is on the seat accessories page. An option is added to a model only when that model's sheet lists it, so the list above is what is available on each model today.
Drawings and tolerances
Drawing Tolerances and Mounting Data: YJ03 and YY08 Drawings, KL03 on Request
The external technical drawings of YJ03 and YY08 are available to buyers. They give the machine builder or distributor a document to put next to a cab or a seat base before any sample is ordered.
The YJ03 drawing shows the front and side views, marks the air pump motor as 24 V, lists the technical data and shows the turning mechanism as an option. The YY08 drawing shows the front and side views, a mounting hole pattern, the technical data and the optional colors and safety belt.
YJ03 · 525 × 610 × 780 mmSize from the specification table
YY08The drawing shows a mounting hole pattern
Both drawings carry the same table of general tolerances for linear dimensions.
General tolerances for linear dimensions printed on the YJ03 and YY08 drawings
Dimension range
Scale
General tolerance
over 3 to 6 mm
±0.3 mm±0.3 mm on dimensions over 3 to 6 mm
over 6 to 30 mm
±0.5 mm±0.5 mm on dimensions over 6 to 30 mm
over 30 to 120 mm
±0.8 mm±0.8 mm on dimensions over 30 to 120 mm
over 120 to 400 mm
±1.2 mm±1.2 mm on dimensions over 120 to 400 mm
over 400 to 1000 mm
±2 mm±2 mm on dimensions over 400 to 1000 mm
over 1000 to 2000 mm
±3 mm±3 mm on dimensions over 1000 to 2000 mm
over 2000 to 4000 mm
±4 mm±4 mm on dimensions over 2000 to 4000 mm
over 4000 mm
±5 mm±5 mm on dimensions over 4000 mm
This is the general tolerance printed on the drawing. It is not an inspection result. A buyer reads it against the tolerances of his own fixtures and cab openings, and then decides whether a sample is needed.
How to use the drawing in three steps:
1Request the drawing for YJ03 or YY08 with your enquiry.
2Compare the overall dimensions and, for YY08, the mounting hole pattern with your seat base.
3Send back the dimensions that do not match, and we answer which model or modification closes the gap.
KL03 has no drawing, mounting hole data or overall dimensions in the published material. These are requested from the factory, and we do not promise a delivery of them on this page. Send the cab or seat base dimensions and the factory replies with what is available.
OEM and ODM
Customization for Tractor Builders: OEM and ODM Programs With Modular Options
Tractor and agricultural machine builders specify a seat as a component of the operator station. KL03 is listed in the parameter sheet as accepted for OEM and ODM. The company runs OEM and ODM programs with modular seat options and its own R&D center, described on the OEM and ODM seat manufacturer page.
The R&D center uses CAE structural analysis on the seat frame during design. A modification starts from your drawing and ends with a model whose parameters are written on a new sheet.
Distributors who want a seat carrying their own marking, or a series as bulk supply, can read the private label and wholesale seats page.
For a tractor project the information that starts a program is specific:
01the cab or platform drawing around the seat position
0224Vthe supply voltage, which decides whether an air suspension model can be used
03the suspension travel and operator weight range the design requires
04the options and the cover the model needs
Documents
Documents for Machine Builders and Distributors: Parameter Sheets, Drawings and Four Certificates
A parameter sheet for YJ03, KL03 and YY08.
The external technical drawing for YJ03 and for YY08.
Copies of the ISO 9001:2015, CE, RoHS and REACH certificates.
CertificateISO 9001:2015
CertificateCE
CertificatesRoHS and REACH
KL03 has no drawing to send. Its drawing, mounting data and overall dimensions are requested from the factory.
Certificate copies and drawings go out with the enquiry reply. The manufacturing and inspection route used for tractor seats follows the same chain recorded in the company MES, from the design record to delivery, and the factory can describe it at a visit.
Enquiry list
Enquiry List for Tractor Builders and Distributors: Seat Photos, Dimensions and 24 V Status
Copy this list into your email and fill in what you have.
Underneath
01Machine
Machine type and model, and the work it does.
02Power
Supply voltage of the machine: is 24 V available at the seat position?
Does the old seat carry an air pump? A photo of the underside helps.
03Photos and dimensions
Photos of the old seat from the front, the side and underneath.
Old seat dimensions: width, depth, height and the suspension travel.
Email [email protected] or call +86 177 0272 7677. Machine builders and distributors: put the supply voltage, your role and the old seat photos in the first message, and the reply names the model.
YJ03
KL03
YY08
YJ03
KL03
YY08
YJ03 · 525 × 610 × 780 mm
YY08
CertificateISO 9001:2015
CertificateCE
