
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X75-20S 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 55 to 75 mm on the machine — no shims, no part change.
The SDAJ100X75-20S is a double-acting compact cylinder featuring a 100 mm bore and an external adjustable extend stop. A built-in piston magnet enables position sensing with AirTAC reed or electronic switches. Turning the R (M27x2.0) screw lets you dial the extend end-position anywhere between 55 and 75 mm directly on the machine, eliminating the need for shims or part swaps during changeovers.
Because the adjuster only restricts travel length, output force remains identical to a standard SDA of this size, delivering 3927 N of push at 0.5 MPa. The short riveted body drastically reduces axial mounting depth compared to conventional round-body units, fitting into tight machinery footprints. End-of-stroke impact is managed by a fixed NBR bumper, which decelerates the piston but is not an adjustable air cushion.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X75-20S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 75 mm |
| Adjustable range | 55 – 75 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. |
| ×75 | 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 exact 55-75 mm extension for pressing heavy bearings, using the full 3927 N push at 0.5 MPa without swapping physical spacers.
Adjust the extend stop on the fly during production line changeovers to accommodate different part heights, saving axial space with its compact riveted body.
Lift loads up to 200.2 kg safely with a 2:1 margin, tweaking the stroke window to prevent over-travel in tight vertical lifting rigs.
When sizing this bore, evaluate your force requirements bidirectionally. Stepping down, the SDAJ80 provides 2513.3 N of push at 0.5 MPa, which may be insufficient for heavy loads. Stepping up is not available in this compact family, making the 100 mm bore the maximum thrust option at 5497.8 N push at 0.7 MPa. This specific configuration yields a safe working load of roughly 2356 N, or a vertical lift capacity of about 200.2 kg using a 2:1 safety margin.
Choose this model if your application requires frequent on-site stroke tuning between 55 and 75 mm. Confirm your setup requires a PT3/8 air port, a 32 mm piston rod, and the built-in magnet (-S). Remember that a plain cylinder drifts when air is lost or the valve is centered; the fixed bumper and mechanical stop do not lock the load. For secure load holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push and 3524.9 N of pull. At 0.7 MPa, push increases to 5497.8 N and pull to 4934.8 N. The theoretical maximum thrust is 801 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
The external R (M27x2.0) screw mechanically shortens the extend stroke by up to 20 mm, allowing you to set the end position anywhere between 55 and 75 mm. This adjustment changes only the stop position, not the output force. The built-in -S magnet works independently with AirTAC reed or electronic switches for end-position sensing.
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