
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X50-20S 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 30 to 50 mm on the machine — no shims, no part change.
The SDAJ100X50-20S is a compact double-acting single-rod cylinder featuring an external M27x2.0 adjustment screw that dials the extend stop from 30 to 50 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 where a larger profile cylinder cannot fit.
Equipped with a built-in piston magnet (-S), this unit supports AirTAC reed or electronic solid-state switches housed in the body sensor grooves. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 port feeds the 32 mm rod to generate a theoretical maximum of 801 kgf.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X50-20S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 50 mm |
| Adjustable range | 30 – 50 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. |
| ×50 | 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 M27x2.0 screw to set a precise 45 mm extend stop for pressing bearings, utilizing the full 3927 N push at 0.5 MPa without part changes.
Lift payloads up to 200.2 kg with a 2:1 margin, relying on the 32 mm rod for stability while adjusting the stop between 30 and 50 mm for varied stacking heights.
Install the compact riveted body in tight machine frames, using the built-in magnet and electronic switches to confirm extend positions in cramped quarters.
When sizing this 100 mm bore, consider the SDAJ80 which yields 2513.3 N of push at 0.5 MPa for lighter loads, whereas stepping up is not an option as this is the largest available frame. The 100 mm bore provides a safe working load of roughly 2356 N, representing about 60 percent of its 3927 N capacity, and can vertically lift approximately 200.2 kg with a 2:1 safety margin. Choose this model if your fixture requires exact 30-50 mm extend tuning during setup without swapping shims.
Confirm the 50 mm maximum stroke, 20 mm adjust window, PT3/8 port, and the female M18x1.5 rod-end thread. The -S magnet enables position sensing, but note that a plain cylinder drifts when air is lost or the valve is centered. For load holding without live pressure, install an external rod lock or a pilot-operated check valve, as the fixed bumper only decelerates near the end of travel.
Quick checklist
This 100 mm bore cylinder generates 3927 N push and 3524.9 N pull at 0.5 MPa, or 5497.8 N push and 4934.8 N pull at 0.7 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Turning the external R (M27x2.0) screw shortens the extend stroke on-site, providing a usable range of 30 to 50 mm without affecting force. The -S code denotes a built-in piston magnet for AirTAC reed or electronic solid-state switches.
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