Air Suspension Seat Manufacturerfor Machine Builders and Distributors: YJ03 at 80mm and KL03 at 180mm on 24V
YJ03
80mm
Air bag suspension, 80 mm travel
Operator weight setting 50–130 kg
24 V air pump motor
KL03
180mm
Air suspension, 180 mm travel
Seat depth in three steps of 17.5 mm each
24 V supply
KL Seating is an air suspension seat manufacturer and supplier for machine builders that fit a seat into a new operator station, and for distributors and importers that supply replacement seats for tractors and agricultural machines already in the field.
YJ03: air bag suspension with 80 mm of travel
KL03: air suspension with 180 mm of travel
Both models take a 24 V supply from the machine.
The reply to your details gives the model, the figures from the parameter sheet and the figures the factory still has to confirm.
Voltage information of your machine
The travel your cab allows
Weight range of your operators, with photos of the seat position
For the data first, the two models are set side by side in the ledger below.
Listed on the sheet for tractor, seeder, agricultural machinery and construction machines. KL03 tractor seat
The forklift line carries no air suspension model. Construction machinery is covered on its series page, construction machinery seats, and KL03 appears there as a model whose sheet lists construction machines.
Specification ledger
YJ03 and KL03 Side by Side: Specification Table of the Two Air Models
Seven rows, one page per model. Click a row name and the same row lights up on both pages. The ledger only reads back what the sheets publish.
YJ03 and KL03 side by side
YJ03
Row
KL03
80 mm
Suspension travel
180 mm
50–130 kg
Operator weight setting
Ask the factory
175 mm
Fore-aft adjustment
front 70 mm and rear 120 mm
35°–170°
Backrest angle
Ask the factory
not listed
Seat depth adjustment
three steps of 17.5 mm each
24 V air pump motor
Supply
24 V
525 × 610 × 780 mm
Overall size
Ask the factory
Row: Suspension travel. YJ03: 80 mm. KL03: 180 mm.
YJ03 figures come from the parameter sheet and the YJ03 drawing. KL03 figures come from the parameter sheet. Where the table says (the figure is confirmed in the enquiry reply), the figure goes into the enquiry reply and is not printed here.
Not on the published sheet. The factory states the figure in the reply, against the details you send.
Air against mechanical
Air and Mechanical Suspension Seats: Comparison on the Published Sheets
The table compares the two suspension lines using only what the parameter sheets, drawings and testing descriptions publish.
Air suspension line against mechanical suspension line
Item
Air suspension line
Mechanical suspension line
Models
YJ03, KL03
YY53, KL01, YL02, KL11
Published travel
80 mm, 180 mm
48 mm, 50 mm, 70 mm (KL11 publishes no travel figure)
Supply figure on the published material
24 V for both models
none listed
Series
tractor
forklift, construction machinery
Shock absorber mechanical analysis
air bag test method not published; the factory answers in the reply
applied to the shock absorber of each mechanical model
Frame analysis, base-hole scan, cushion pressure test
applied
applied
The air line carries a machine-side electrical item, the 24 V supply, which goes into the interface list next to the mounting data.
Every published suspension travel, air and mechanical, sits on one scale on the suspension seats page. The mechanical models have their series pages for forklift and construction machinery.
Travel selection
Travel Selection for Air Suspension Seats: 80 mm and 180 mm Against Cab Clearance
Travel is the vertical movement of the seat on its suspension, and the cab has to give that movement room. The air line publishes two values: 80 mm on YJ03 and 180 mm on KL03.
1
Machine type and cab
You give the machine type and the cab or platform the seat sits in.
2
Travel of the seat now fitted
You give the travel of the seat now fitted, or the travel your cab design allows.
3
Space under and around the seat
You give the (the height and room left for the seat to move) under the cushion and around the seat base.
4
The reply
We answer with the model and mark which figures come from the sheet.
The vertical room the seat has to move in, measured on the old seat or taken from the cab design.
80 mm. A machine whose present seat travels 80 mm points to YJ03.
180 mm. A machine whose cab was designed around a longer stroke points to KL03 at 180 mm.
YY08, also a tractor seat, publishes 80 mm of travel and no suspension type. It sits on the tractor seats page and is not described as air or mechanical anywhere on this site.
A seat with a different travel changes how the operator sits against the steering wheel, pedals and roof, so measure the travel and the free space of the old seat before an enquiry.
Supply
24 V Supply for Air Suspension Seats: One Interface Item for YJ03 and KL03
24V
Schematic · not to scale · current draw and connector form are not published
Both air models run on 24 V. The YJ03 drawing marks the air pump motor as 24 V, and the KL03 supply is 24 V on the same footing. The seat brings the pump. The machine brings the supply to the seat position, and nothing on the seat side changes the voltage of the machine.
Machine builder
The supply goes into the operator-station interface list next to the mounting data.
We ask whether the electrical system of the machine provides 24 V at the seat position.
We ask whether the wiring to that position is part of the cab design.
Distributor or refit shop
Send the voltage information of the tractor and a photo of the underside of the old seat.
If the old seat carried a pump and wiring, the photo shows where they sit.
If the old seat carried no pump, the question moves to the machine: is there a 24 V feed at the seat position?
Pump current draw and connector form are not on our published sheets, so we do not print them. Send the electrical details of your machine and the factory answers each point in the reply. Put the voltage in the first message and the reply starts at the model.
Weight and adjustment
Weight Setting and Seat Adjustment: What Each Air Model Publishes
The air bag is set for the person who sits on it, so the operator weight range is part of every selection. The adjustments differ between the two models, and each model's own page carries the full detail.
YJ03
Operator weight setting 50–130 kg
Fore-aft adjustment 175 mm
Backrest from 35° to 170°
Headrest height adjustment of 120 mm when a headrest is fitted
Overall size 525 × 610 × 780 mm, the sheet value
KL03
Seat depth in three steps of 17.5 mm each
Fore-aft adjustment with 70 mm forward and 120 mm rearward
Weight setting: Ask the factory
Backrest angle: Ask the factory
Overall size: Ask the factory
A fleet with operators across a wide weight range names the lightest and heaviest operator in the first message. For KL03 that range is what the factory checks against its own data before the model is confirmed. Cover and options for both models are listed on the model pages.
Open items
Items Requested From the Factory: KL03 Data and Air Bag Details
Some figures sit outside the published sheets. They are listed here so you can ask for them in the first message, and so the reply does not hold a surprise.
Figures requested from the factory
Item
State on the sheets
How it is handled
KL03 weight setting
The sheet does not give a band.
The factory confirms it against the operator weight range you send.
KL03 backrest angle, overall size, cover and options
Not published.
Confirmed in the reply.
KL03 drawing and base hole pattern
No drawing is on file.
The hole pattern is requested from the factory with your seat base measurements.
YJ03 base hole pattern
The sheet and drawing give the overall size and the technical data.
The hole pattern is requested from the factory.
Air bag pressure and pump current
Not on the published sheets.
Answered by the factory against your machine.
Pump connector form
Not published.
Confirmed with the electrical details you send.
Asking for these items in the first message shortens the reply to one round.
Fit check
Mounting Data for Air Suspension Seats: Base Hole Pattern and 3D Scan Fit Check
The fit check runs on three inputs from you:
the hole positions on your seat base, measured or taken from the cab drawing
the footprint of the old seat, if you are replacing one
the rails or frame the seat sits on, with a photo
3D scanning in our testing center is used to compare base hole positions and frame outline dimensions. The result is returned to you against the model parameter sheet.
If the pattern on your machine differs from the seat, the factory states which modification closes the gap, and a structure change goes to the research center.
YJ03 sample seat underside
KL03 sample seat underside
3D scan station
Sample seat undersides; the hole pattern is requested from the factory. For measuring a seat base against a model, see seat fitment and compatibility.
Production route
Air Suspension Seat Production Route: Foam Molding, Stamping, Robotic Welding and Testing
Air suspension seats are built in our own plant of 35,000 m² with 180+ employees. The testing center covers 300+ m² with 20+ devices and 30+ test items. Three checks apply to the seat:
CAE structural analysis of the seat frame at the design stage.
3D scanning of base holes and frame outline.
Pressure distribution testing of the seat cushion, which records how pressure spreads across the cushion while a person sits on it.
How the air bag travel is tested is not on our published material, and the factory answers that question in the enquiry reply. No test values and no service life figures are published on this page.
01
Foam, stamping, welding, assembly
The cushion and the backrest are formed by foam molding. Frames and base parts are precision stamped. The frame is joined in the robotic welding station. Assembly puts together the suspension, the slide rails and the options you chose.
02
Frame analysis
The seat frame goes through CAE structural analysis at the design stage.
03
Cushion pressure
Pressure distribution testing of the seat cushion records how pressure spreads across the cushion while a person sits on it.
04
Records and visits
The MES covers research, purchasing, production, quality inspection, warehousing and delivery, so an air suspension seat follows the same record chain as every other seat we build. The plant is open to visits by appointment.
Machine builders
Air Suspension Seats for Machine Builders: Interface Items for the Seat Specification
A machine builder puts the seat into the operator-station design, and three air-specific items go into that specification next to the usual mounting data.
Travel
80 / 180mm
The stroke the cab design allows: 80 mm for YJ03, 180 mm for KL03.
Supply
24V
The 24 V feed at the seat position and the wiring that carries it.
Operator range
The lightest and the heaviest operator the cab is specified for.
What to send in the first message
Machine type and the work it does.
Cab drawing around the seat position, with free height and the space behind the seat.
Whether 24 V is available at the seat position, and whether the wiring is part of the cab design.
We reply with the model, the sheet figures and the items the factory confirms. Structure changes go through the research center.
Distributors and importers
Air Suspension Seats for Distributors and Importers: Replacement Seat Enquiry Set
A distributor or importer works from a machine in the workshop or a seat in the field. The enquiry set follows that order.
Tractor make and model.
Supply voltage information of the machine.
Photos of the old seat from the front, the side and underneath, showing any pump and wiring.
Old seat dimensions, base hole positions and suspension travel.
Operator weight range of the fleet you supply.
Options and cover needed.
Sample photo: front
Sample photo: side
Sample photo: underneath
Distributors with a mixed fleet send one set per machine type. We reply per machine with the model and mark open figures. Wholesale and private label supply for the range is arranged on the same sheet as the model and options.
Supply program
OEM and ODM for Air Suspension Seats: How the Supply Program Works
KL Seating works as an OEM and ODM seat manufacturer, building customized and modular seat systems for machine builders. The program covers the whole product line, and air suspension seats come into it through the same file as every other model.
Machine builders
The starting set is the cab drawing, the supply voltage, the travel and weight range the design needs, and the options and cover.
We fix the model against your drawing and mounting pattern, and structural changes go to the research center.
Distributors and importers
Wholesale and private label. A series is supplied as a set across the models you stock, and your own brand goes on the seat.
Bulk supply is arranged by series.
The full description of both programs is on the OEM and ODM page.
For YJ03 and KL03, with the figures in the specification ledger above.
External drawing
For YJ03, with the 24 V pump motor mark and the general tolerance table. No drawing is on file for KL03.
Certificates as copies
ISO 9001:2015, CE, RoHS and REACH. Other certificates held include environmental, occupational health and safety and energy management systems.
If your cab clearance is measured in working use, say so in the enquiry and the factory states which figure applies to your build. Where a drawing and a sheet differ, the sheet is the reference and the reply says which values are affected.
ISO 9001:2015
CE
Related pages
Model Pages and Series Pages Next to Air Suspension Seats
Send Voltage, Travel and Weight Range for an Air Suspension Seat Match
Three figures select the model, and a photo of the seat position or the cab drawing goes with them. Say whether you are a machine builder, a distributor or an importer.
The reply gives the model, the figures that come from the parameter sheet and the figures the factory still has to confirm.
For OEM and ODM projects, state the program in the first line and add the drawing.
Contact: Voltage, Your Role and Seat Photos in the First Message
Email [email protected] or call +86 177 0272 7677. Put the supply voltage of your machine, your role and the seat photos in the first message, and the reply names the model. The enquiry form is also on the contact page.
YJ03
KL03
Travel80 / 180mm
Supply24V
Operator range
KL03 tractor seatThe 180 mm air model, seat depth steps, slide figures and items requested from the factory.
Tractor seatsAll three tractor models, YJ03, KL03 and YY08, in one table.
Suspension seatsEvery published suspension travel on one scale, air and mechanical.
Construction machinery seatsThe series page for excavator, loader and roller seats.
