
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X90-75B 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 15 to 90 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X90-75B is a compact double-acting double-rod cylinder built for on-site extend-position tuning. The short riveted body drastically reduces axial mounting depth, fitting where round-body or profile cylinders cannot.
This unit features a male M14x1.5 piston rod thread and a PT1/8 port. It uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. Because this specific SKU lacks the -S magnet option, it cannot accept reed or electronic switches.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X90-75B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 90 mm |
| Adjustable range | 15 – 90 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 75 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. |
| ×90 | Maximum stroke length in mm. |
| -75 | 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).
Speed up production line format changes by turning the M12x1.25 screw to set new extend positions on the machine, avoiding part swaps.
Gradually extend the rod during prototype assembly to find the exact seating depth, safely stopping anywhere before the 90 mm maximum.
Choose this model if your fixture requires frequent changeovers or trial positioning within the 15-90 mm window.
Confirm your requirements for the 90 mm maximum stroke, 75 mm adjustment window, PT1/8 port, and male M14x1.5 rod thread. Note that a plain cylinder does not hold position if air pressure drops or the valve centers—the piston drifts and the fixed bumper only decelerates near the end. For load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
The theoretical maximum push is 128 kgf at 1.0 MPa.
Turning the external R (M12x1.25) screw mechanically shortens the extend stroke by up to 75 mm, allowing you to set the stop anywhere between 15 and 90 mm. The retract stroke remains full, and the adjuster sets the stop position rather than changing the force.
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