
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-30B 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 45 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X45-30B is a compact double-acting double-rod cylinder featuring an external extend stop. By turning the R (M12x1.25) adjuster screw, you can dial the forward stroke down by up to 30 mm directly on the machine, yielding a usable extend range of 15 to 45 mm without swapping shims or parts.
This variant uses a male-threaded M14x1.5 piston rod end and includes no piston magnet. Its short riveted body conserves axial mounting depth in tight machinery layouts. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning the screw dictates the stopping point but does not function as a mid-stroke lock or brake.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-30B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 45 mm |
| Adjustable range | 15 – 45 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 30 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. |
| ×45 | Maximum stroke length in mm. |
| -30 | 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 between 15 and 45 mm to clamp raw castings of varying widths on a machining line without fabricating custom spacer blocks.
Fine-tune the pressing depth of bearings or pins during trial runs, using the fixed NBR bumper to absorb the end shock of each 45 mm maximum forward stroke.
Choose this specific unit when your fixture requires a male M14x1.5 rod thread and frequent on-site stroke tuning during setup or product changeovers.
Confirm your requirements against the PT1/8 air port and the 30 mm adjustment window. Note that this SKU lacks the -S magnet, so it cannot accept reed or electronic switches; add the -S option if you need position sensing. Furthermore, a standard cylinder of this type does not hold a load if air pressure drops or the valve centres—integrate an external rod lock or pilot-operated check valve for secure load holding.
Quick checklist
The R (M12x1.25) screw mechanically shortens the forward stroke by up to 30 mm, allowing the extend stop to be set anywhere from 15 to 45 mm. This -B variant features a male M14x1.5 piston rod thread, and because it lacks the -S magnet, it cannot host position sensors.
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