
The AirTAC Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-40B is a genuine double-acting COMPACT cylinder (Ø32mm bore) whose extend end-position is set by an external M10×1.25 adjustment screw. You can dial the stroke anywhere from 0 to 40 mm on the machine — no shims, no part change.
The AirTAC SDAJ32X40-40B is a compact double-acting single-rod cylinder featuring an external M10x1.25 adjuster screw that dials the extend stop from 0 to 40 mm directly on your machine. Retract remains full length. Because the mechanism sets the mechanical stop rather than altering the piston area, output force equals a standard SDA of this bore, delivering 402.1 N push at 0.5 MPa.
Its short riveted body saves axial mounting depth where round-body or profile cylinders will not fit. This specific SKU includes a male M10x1.25 piston rod thread and lacks a piston magnet, meaning it cannot accept reed or electronic switches without switching to the -S variant. End shock is managed solely by a fixed NBR bumper, which decelerates the stroke end but is not an adjustable air cushion.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X40-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 40 mm |
| Adjustable range | 0 – 40 mm |
| Adjuster thread (R) | M10×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M6×1.0 F / M10×1.25 male (B) |
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
The adjustment screw shortens the extend stroke by up to 40 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | Maximum stroke length in mm. |
| -40 | Adjustable window (10/20/30/40/50/75/100 mm). |
| S / B | S = magnet; B = male-thread rod (both optional). |
Thread: PT standard. Related SDA-family variants: SDA (fixed stroke), SDAD (double rod), SSA/STA (single acting), SDAT (duplex), SDAW (duplex-end).
Dial the 0-40 mm extend stop during machine changeover to accommodate different part heights without fabricating new spacers.
Set the exact push distance for routing boxes on a conveyor, relying on the 402.1 N force to shift loads smoothly.
Use the external M10x1.25 screw for trial-and-error positioning in R&D fixtures, fine-tuning the extend endpoint on the fly.
When sizing this 32 mm bore, verify your force requirements both ways: stepping down to an SDAJ25 yields 245.4 N push at 0.5 MPa, while stepping up to an SDAJ40 provides 628.3 N push at 0.5 MPa. Based on the 402.1 N push figure, the safe working load is approximately 241 N (using a 60% margin), translating to a vertical lift capacity of about 20.5 kg with a 2:1 safety factor.
This model is ideal for setups requiring frequent on-site stroke tuning or trial positioning without changing parts. Confirm your parameters: 32 mm bore, 0-40 mm adjustable window, PT1/8 port, male M10x1.25 rod thread, and no magnet. Note that a plain cylinder does not hold its load on air loss or valve centering—the piston drifts and the fixed bumper only decelerates near the end. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
At 0.5 MPa it provides 402.1 N push and 345.6 N pull. At 0.7 MPa it provides 563 N push and 483.8 N pull. The theoretical maximum push is 82 kgf at 1.0 MPa.
The R (M10x1.25) screw shortens the extend stroke by up to 40 mm, allowing a usable extend range of 0-40 mm while retract remains full. This SKU features a male M10x1.25 rod thread and lacks a piston magnet, so it cannot accept sensing switches.
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