
The AirTAC Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X35-20B 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 15 to 35 mm on the machine — no shims, no part change.
The AirTAC SDAJ32X35-20B is a double-acting compact cylinder featuring a male-thread piston rod (M10x1.25) and an external extend stop. Turning the R (M10x1.25) adjuster screw lets you dial the forward stroke down by 20 mm, yielding a usable extend range of 15 to 35 mm directly on the machine without swapping shims or parts. Retract remains full length. Because the adjuster only sets the mechanical stop and not the piston area, force equals a standard SDA of this bore, delivering about 402.1 N push at 0.5 MPa.
The short riveted body saves axial mounting depth where round-body or profile cylinders will not fit, and it accepts standard AirTAC compact-cylinder accessories. End shock is handled by a fixed NBR bumper that decelerates the stroke end; it is not an adjustable air cushion. Note this SKU lacks a piston magnet, so it cannot take magnetic switches (the -S variant adds one for reed or electronic sensing). The adjuster is a stop, not a mid-stroke lock, so a plain cylinder will not hold a load on air loss or valve centred—use an external rod lock or pilot-operated check valve for holding.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X35-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 35 mm |
| Adjustable range | 15 – 35 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 20 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. |
| ×35 | Maximum stroke length in mm. |
| -20 | 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 extend stop from 15 to 35 mm during fixture swaps to align the male M10x1.25 rod with varying part heights without machining new spacers.
Tune the pusher stroke on-site to deflect mixed carton widths, using the 402.1 N push force at 0.5 MPa to reliably clear the belt.
Fine-tune the 15-35 mm extend window to match fold depths, letting the fixed NBR bumper absorb the end shock without crushing the box.
Size both ways: SDAJ25 delivers 245.4 N push at 0.5 MPa (likely too light for this duty), while SDAJ40 steps up to 628.3 N. This 32 mm bore is ideal when you need roughly 402.1 N push, which translates to a safe working load of about 241 N (60% of the 0.5 MPa figure) or a vertical lift of roughly 20.5 kg with a 2:1 margin. Choose this exact configuration (bore 32, stroke 35, window 20, port PT1/8, male M10x1.25 rod, no magnet) when your fixture requires on-site stroke tuning between 15 and 35 mm. For any load holding without live air pressure, add an external rod lock or pilot-operated check valve, as the fixed bumper and adjuster screw do not brake or lock the piston.
Quick checklist
Force equals a standard SDA of this bore: push is 402.1 N and pull is 345.6 N at 0.5 MPa; push is 563 N and pull is 483.8 N at 0.7 MPa. The theoretical max push is 82 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, proof is 1.5 MPa, temperature is -20 to +70 C, and speed is 30-500 mm/s.
The R (M10x1.25) screw mechanically shortens the extend stop by up to 20 mm, giving a usable forward range of 15 to 35 mm; retract remains full. This SKU has no piston magnet and cannot take a switch. You would need the -S variant to use AirTAC reed or electronic sensors in the body grooves.
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