
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X30-20B 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 10 to 30 mm on the machine — no shims, no part change.
The AirTAC SDAJ32X30-20B is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. By turning the R (M10x1.25) screw, you can dial the forward stroke on-site from 10 mm up to 30 mm without changing parts.
This thin riveted-body design saves valuable axial mounting depth where larger profile or round-body units will not fit. The unit comes with a male-thread M10x1.25 piston rod (Ø12 mm) for direct load attachment. End-of-travel 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 sensing.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X30-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 30 mm |
| Adjustable range | 10 – 30 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. 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. |
| ×30 | 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 10 to 30 mm during machine changeovers to accommodate different workpiece heights without fabricating new spacers.
Fine-tune the insertion depth of a 20.5 kg vertical assembly by adjusting the mechanical stop, ensuring consistent seating without over-stroking.
Choose this model if your fixture requires on-site extend tuning between 10 and 30 mm.
Confirm your parameters: 32 mm bore, 30 mm maximum stroke, 20 mm adjust window, PT1/8 port, and a male M10x1.25 rod thread. Since this SKU omits the -S magnet, you cannot mount magnetic switches. Keep in mind a plain cylinder does not hold position if air pressure drops or the valve centres; the piston will drift. For suspended or vertical loads, install an external rod lock or pilot-operated check valve, as the fixed NBR bumper only decelerates near the end of travel and acts as a stop, not a brake.
Quick checklist
At 0.7 MPa the push increases to 563 N and the pull to 483.8 N. The theoretical maximum push is 82 kgf at 1.0 MPa.
Turning the R (M10x1.25) screw mechanically shortens the forward end position by up to 20 mm, allowing an extend range of 10 to 30 mm. It sets the stop position only and does not alter the output force or lock the piston mid-stroke.
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