Mining and forestry machinery seats · Drawing requirements
Mining and Forestry Machinery Seat Supplier for Machine Builders and Distributors:What the Drawing Requires
KL Seating is a machinery seat manufacturer and supplier for builders of mining and forestry machines, and for the distributors and importers who supply seats to the owners of those machines. These machines sit in the special off-road group of our application list, next to UTVs and ATVs. We state it plainly: our parameter sheets hold no seat model written for mining or forestry machines, and no table that links such a machine to a model.
What we can put in your hands is a drawing-level reference. The YQ40 drawing carries a block of technical requirements on seams, rust treatment, welded assemblies and adjustment, and this page sets those requirements out in rows you can lay against any seat drawing, ours or another supplier’s.
Requirements as written on the YQ40 drawing · not test results- N1Seams
- N2Rust treatment
- N3Welded assemblies
- N4Adjustment
- Since 2007Seat manufacturer since 2007, own brand KL Seating since 2016
- 500,000500,000 seats a year from our own automated lines
- CertifiedISO 9001:2015, CE, RoHS and REACH certificates
- OEM and ODMOEM and ODM service with customized, modular seat systems
Drawing-Level Requirements Table: Six Lines for Any Machinery Seat Drawing
A seat drawing is the one document that stays the same between the buyer’s purchase specification and the factory floor. For machines working in a mine or a forest block, where the seat is fitted once and then sits through long shifts, these are the six lines we put in a purchase specification and look up in the drawing.
| Hatch key | Line on the drawing | What the line settles | What the YQ40 drawing says | Source sentence |
|---|---|---|---|---|
| Seam thread and stitch pitch | The strength of the thread in the cover seams and the spacing of the stitches | Thread of not less than 30 N, stitch pitch 3 to 5 mm | ||
| Frame and exposed parts finish | Whether rust treatment is written on the frame and the visible metal parts | Frame and exposed parts are to be treated against rustAsk the factory: treatment process | ||
| Welded assemblies | What a welded frame may not show | No misalignment, no cold welds, no missing welds | ||
| Adjustment parts | Which moving parts are named as flexible and reliable | Headrest, backrest, armrest, front and rear height, slide-rail adjustment and damping lockNo figure published | ||
| Mounting hole map | Whether the base holes are drawn for the machine floor | A hole map is on the drawing | ||
| Overall dimensions | The envelope of the seat in the cab | 570 × 480 × 1160 mm |
The table reads the YQ40 drawing and nothing more. Where a line is blank on a drawing, the line is open, and the question goes to the factory in the enquiry.
YQ40 Drawing Requirements: Seams, Rust Treatment, Welds and Adjustment
- NoteN1
Seams
The YQ40 drawing requires seams to be stitched with thread of not less than 30 N and with a stitch pitch of 3 to 5 mm.
Use itThread strength and pitch are two values an engineer can look up in the drawing before a sample is ordered, and they go straight into the purchase specification. - NoteN2
Rust treatment
The YQ40 drawing requires the frame and the exposed parts to be treated against rust.
Open lineThe line names the parts it applies to. The drawing does not name the treatment process: Ask the factory. - NoteN3
Welded assemblies
The YQ40 drawing requires welded assemblies to show no misalignment, no cold welds and no missing welds.
Reads asThree named defects a welded assembly may not show. The line is a drawing requirement, not a weld inspection report. - NoteN4
Adjustment and locking
The YQ40 drawing requires the headrest, the backrest, the armrest, the front and rear height, the slide-rail adjustment and the damping lock to be flexible and reliable.
Open lineThe drawing states this in words and publishes no figure for it.
Engineers who run supplier approval copy these four lines into their purchase specification and refer to the drawing by its content. A drawing from any other supplier can be read against the same four lines.

YQ40 Parameter Sheet Facts: The Seat With a Published Drawing
YQ40 is the one model in our series where we can publish a drawing’s technical requirements. We give its parameters here as the facts of the seat with a drawing, and we do not present YQ40 as a mining or forestry seat. The parameter sheet lists construction machinery, crane, excavator and truck as the uses of YQ40, and it lists no mining or forestry use.
| Options | Armrests, headrests, seat belts |
|---|---|
| Drawing | Mounting hole map and technical requirements |
| Uses on the parameter sheet | Construction machinery, crane, excavator, truck |
Data We Do Not Hold for Mining and Forestry Machines
Our sheets carry the application name for mining and forestry machinery and no more. The drawing requirements above are the only drawing-level statement we publish, and they belong to YQ40 alone.
- No model data
- We hold no model data written for these machines.
- No machine-to-model table
- We hold no table that links a machine to a seat model.
- No site test data
- We hold no test data for the conditions on a mining site or in a forest block.
Every other figure for your machine is settled in the enquiry, against your drawing or your old seat. An unknown value is marked Ask the factory, and we do not fill it with an estimate.
Selection Points to Settle Before the First Message
These are the points we ask about for machines working long shifts in rough locations. They help the reply, and none of them is a performance claim.
S1Shift length and shared seats
How long the operator sits in one shift, and whether the seat is shared between operators.
S2Looking behind
Whether the operator turns to look behind, which decides the backrest and slide range to ask for.
S3Getting on and off
How often the operator gets on and off, which decides whether armrests are wanted.
S4Cover and wipe-down
Whether the cover is wiped down at the end of a shift, and whether PVC or fabric is wanted where the model offers both. PVC is the main cover in our series.
S5Seat belt and anchor points
Whether the seat carries a seat belt, and whether the machine floor already has the anchor points.
S6Electrical situation
The machine voltage, if the seat is to carry a micro switch or an electronic lock, or if an air suspension model is under consideration. The air bag models of our tractor line, YJ03 and KL03, carry a 24 V supply, and we ask for the machine voltage before any model is named.
Seat Production on Our Own Lines: Four Steps

- STEP 1
Foam molding
The cushion and the backrest are foam molded.
- STEP 2
Stamping and welding
The frame and base parts are precision stamped, and the frame is robot welded.
- STEP 3
Assembly
The slide, the suspension where the model has one, the cover and the options you chose are fitted.
- STEP 4
Testing center
CAE structure analysis of the frame at the design stage, 3D scanning of base holes and frame outline, and a pressure distribution comfort test on the cushion. The MES records quality inspection and delivery as one chain. No test values are published here.
On request: copies of the ISO 9001:2015, CE, RoHS and REACH certificates. The factory takes visit bookings in advance.
OEM and ODM for Machine Builders, Wholesale and Private Label for Distributors
Machine builders: OEM and ODM
You send the cab drawing with the mounting hole pattern, our research and development center works on a customized, modular seat base, and you compare the reply with your machine.
OEM and ODM seat manufacturer pageDistributors and importers: wholesale and private label
Distributors and importers take seats under wholesale or private label supply, with the model and its options written on one sheet. The service covers the whole product line.
How the steps runModel Match for a Mining or Forestry Machine: Send the Machine and the Old Seat
We reply with a matching model, or with the evaluation of a custom seat. The reply goes back to the sender, whether builder or distributor. The routine in full is on the seat fitment and compatibility page.
- S1The machine make and model
- S2Photos of the old seat from the front, the side and underneath
- S3The base hole pattern
- S4The voltage situation of the machine
Send the Machine Details to the KL Seating Sales Team
We reply with a matching model, the YQ40 drawing and parameter sheet, or the evaluation by the research and development center.
- Email[email protected]
- Phone+86 177 0272 7677
- Send: machine make and model · old seat photos and base hole pattern · machine voltage
More contact options are on the contact page.
The YQ40 drawing requires seams to be stitched with thread of not less than 30 N and with a stitch pitch of 3 to 5 mm.
Drawing requirement, not an inspection resultThe YQ40 drawing requires the frame and the exposed parts to be treated against rust. The drawing does not name the treatment process: Ask the factory.
Drawing requirement, not an inspection resultThe YQ40 drawing requires welded assemblies to show no misalignment, no cold welds and no missing welds.
Drawing requirement, not an inspection resultThe YQ40 drawing requires the headrest, the backrest, the armrest, the front and rear height, the slide-rail adjustment and the damping lock to be flexible and reliable. The drawing states this in words and publishes no figure for it.
Drawing requirement, not an inspection resultA hole map is on the YQ40 drawing. The drawing and the parameter sheet go out with the first reply.
Drawing requirement, not an inspection resultThe overall dimensions on the YQ40 drawing are 570 × 480 × 1160 mm.
Drawing requirement, not an inspection result