
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X35-40B is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 0 to 35 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X35-40B is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. An M12x1.25 screw lets you dial the outward stroke on-site from 0 up to 35 mm without swapping shims or parts, while the retract motion remains full length.
Built with a short riveted body, this unit saves axial mounting depth where a longer cylinder would not fit. It uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion or a lock. This specific SKU includes a male M14x1.5 piston rod thread and lacks a piston magnet, meaning it cannot accept reed or electronic switches without the -S option.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X35-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 35 mm |
| Adjustable range | 0 – 35 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 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. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 extend stop from 0 to 35 mm on the machine to match different fixture heights during production line changeovers without machining new spacers.
Fine-tune the 0-35 mm extend position to set precise insertion depths for pins or bearings, using the male M14x1.5 rod to mount custom tooling.
Choose this model for setups requiring frequent on-site stroke tuning during changeovers. Confirm your requirements for the 40 mm window, PT1/8 port, and male M14x1.5 rod. Note that a plain cylinder does not hold its load on air loss or when a valve is centered—the piston drifts. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
The M12x1.25 adjuster screw shortens the extend stop by up to 40 mm, yielding a usable 0-35 mm outward range. It acts purely as a mechanical stop and does not change force. The cylinder cannot hold a load on air loss; use an external rod lock for holding.
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