The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X25-20S is a genuine double-acting COMPACT cylinder (Ø100mm bore) whose extend end-position is set by an external M27×2.0 adjustment screw. You can dial the stroke anywhere from 5 to 25 mm on the machine — no shims, no part change.
The SDAJ100X25-20S is a compact double-acting single-rod cylinder featuring an external M27x2.0 adjuster screw that dials the extend stop from 5 to 25 mm directly on your machine. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 3927 N of push at 0.5 MPa. The short riveted body drastically reduces axial mounting depth compared to conventional round-body or profile cylinders, fitting into tight machinery footprints.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating speed spans 30-500 mm/s, and the PT3/8 air port supplies the 32 mm rod for heavy-duty positioning tasks.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X25-20S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 25 mm |
| Adjustable range | 5 – 25 mm |
| Adjuster thread (R) | M27×2.0 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M18×1.5 F / M26×1.5 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 20 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3525 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 in the 5 to 25 mm extend stop on a 100 mm bore press to set precise contact depth, leveraging 3927 N of push at 0.5 MPa for heavy forming tasks.
Utilize the compact riveted body to fit tight ejection stations, adjusting the mechanical stop on-site to tune part release without changing out the actuator.
Lift loads up to 200.2 kg with a 2:1 safety margin, relying on the fixed NBR bumper to absorb end-of-stroke shock while an external check valve holds the load.
When sizing this 100 mm bore actuator, evaluate your force requirements bidirectionally: stepping down to an SDAJ80 yields 2513.3 N of push at 0.5 MPa, whereas this SDAJ100 provides 3927 N, offering a safe working load of roughly 2356 N (about 60 percent of the 0.5 MPa rating) and a vertical lift capacity near 200.2 kg with a 2:1 safety margin. Choose this model when your application demands on-site stroke tuning to perfect the end position without swapping shims or components.
Confirm the 25 mm maximum stroke, 20 mm adjustable window, PT3/8 port, built-in magnet, and female M18x1.5 rod-end thread match your mounting interface. Remember that a plain cylinder does not hold its load upon air loss or valve centring—the piston drifts and the fixed bumper only decelerates near the stroke end. For secure load holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 3927 N push and 3524.9 N pull at 0.5 MPa, 5497.8 N push and 4934.8 N pull at 0.7 MPa, with a theoretical maximum of 801 kgf at 1.0 MPa.
The M27x2.0 adjuster screw shortens the extend stop by up to 20 mm, giving a usable extend range of 5 to 25 mm without changing force. The built-in magnet works with AirTAC reed or electronic switches for position sensing.
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