
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X90-50 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 40 to 90 mm on the machine — no shims, no part change.
The AirTAC SDAJ32X90-50 is a double-acting compact cylinder featuring a 32mm bore and an external adjustable extend stop. By turning the R (M10x1.25) screw, you can dial the extend end-position anywhere between 40 and 90 mm directly on your machine, avoiding part swaps or shims.
The short riveted body saves valuable axial mounting depth where a round-body or profile cylinder will not fit. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Note that this specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; you would need the -S variant for position sensing.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X90-50 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 90 mm |
| Adjustable range | 40 – 90 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 50 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | — |
| Max (@1.0 MPa) | 70 kgf | |
SDAJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SDA push of the same bore. Actual usable force is lower than theoretical due to friction.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×90 | Maximum stroke length in mm. |
| -50 | 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 40 to 90 mm to accommodate varying raw stock thicknesses on a milling fixture without machining new spacers.
Speed up product family changeovers by turning the M10x1.25 screw to reposition the 402.1 N clamping point on the fly.
Iterate on prototype assembly press depths safely, using the mechanical stop to prevent over-travel before finalizing the cycle.
Choose this model if your fixture requires frequent on-machine stroke tuning between 40 and 90 mm during changeovers. Confirm your setup needs a 32mm bore, 90mm max stroke, 50mm adjust window, PT1/8 port, female M6x1.0 rod thread, and no magnet. Remember 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 a held load, specify an external rod lock or a pilot-operated check valve.
Quick checklist
The external M10x1.25 screw shortens the extend stroke by up to 50 mm, allowing usable travel between 40 and 90 mm. It is a mechanical stop, not a mid-stroke lock; the cylinder will drift if air is lost, so use an external rod lock for load holding.
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