
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X75-40S 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 35 to 75 mm on the machine — no shims, no part change.
The SDAJ100X75-40S is a double-acting compact cylinder featuring a 100mm bore and an external adjustable extend stop. A built-in piston magnet supports AirTAC reed or electronic switches for end-position sensing. The short riveted body conserves axial mounting depth in tight machinery footprints where larger profile or round-body units cannot fit.
By turning the R (M27x2.0) adjuster screw, you set the extend position anywhere between 35 and 75mm directly on the machine without changing parts. This mechanical stop dictates the end point, leaving thrust unchanged at 3927N push at 0.5MPa. A fixed NBR bumper decelerates the stroke end, operating reliably across 30-500mm/s.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X75-40S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 75 mm |
| Adjustable range | 35 – 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 40 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. |
| -40 | 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 75mm down to 35mm via the M27x2.0 screw during tooling swaps, ensuring precise contact without fabricating custom spacers for each new die set.
Leverage the 3927N push at 0.5MPa to elevate 200.2kg loads with a 2:1 safety margin, using the fixed NBR bumper to soften the impact at the upper mechanical stop.
Adjust the clamping depth on the fly for varying workpiece heights, relying on the 100mm bore's consistent force while the external screw sets the exact resting position.
When sizing this unit, evaluate both neighbours: dropping to an SDAJ80 yields 2513.3N push at 0.5MPa, whereas this 100mm bore provides 3927N. This makes the 100mm ideal when the 80mm lacks thrust, providing a safe working load around 2356N (about 60% of the 0.5MPa figure) and a vertical lift capacity of roughly 200.2kg with a 2:1 margin.
Choose this model for heavy setups requiring frequent on-site stroke tuning during product changeovers. Confirm your spec needs a 100mm bore, 75mm max stroke, 40mm window, PT3/8 port, female M18x1.5 rod thread, and the -S magnet. Note that a plain cylinder drifts on air loss; for load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
At 0.5MPa this 100mm bore cylinder provides 3927N push and 3524.9N pull. At 0.7MPa it delivers 5497.8N push and 4934.8N pull. The theoretical maximum push is 801kgf at 1.0MPa.
The R (M27x2.0) screw shortens the extend stroke by up to 40mm, allowing on-site tuning between 35 and 75mm; it sets the stop and does not alter force. The -S suffix indicates a built-in piston magnet compatible with AirTAC reed or electronic solid-state switches.
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