
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X35-20SB is a genuine double-acting COMPACT cylinder (Ø80mm bore) whose extend end-position is set by an external M20×1.5 adjustment screw. You can dial the stroke anywhere from 15 to 35 mm on the machine — no shims, no part change.
The AirTAC SDAJ80X35-20SB is a compact double-acting single-rod cylinder built for tight axial spaces, featuring an external M20x1.5 adjustment screw that dials the extend stop from 15 to 35 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 80 mm bore SDA, delivering 2513.3 N of push at 0.5 MPa. The short riveted body drastically reduces mounting depth where a larger profile cylinder cannot fit, while the fixed NBR bumper decelerates the stroke end without acting as a lock.
This specific configuration includes a built-in piston magnet for AirTAC reed or electronic switches and a male M22x1.5 threaded rod end. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 air port matches the 80 mm bore specification. The external screw allows rapid changeover without swapping parts, making it highly effective for trial positioning and setup-heavy lines.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X35-20SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 35 mm |
| Adjustable range | 15 – 35 mm |
| Adjuster thread (R) | M20×1.5 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M14×1.5 F / M22×1.5 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×35 | 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).
Use the 15 to 35 mm extend adjustment to fine-tune a 2513.3 N press fit on machined components without machining new spacers or changing hardware.
Twist the M20x1.5 screw to shift the extend stop for different product lengths on a packaging line, saving changeover minutes between production runs.
Lift loads up to 128.1 kg with a 2:1 margin and set the exact extend height on the fly, ensuring precise placement without re-engineering the fixture.
When sizing this model, compare the output both ways: stepping down to the SDAJ63 yields 1558.6 N of push at 0.5 MPa, whereas moving up to the SDAJ100 provides 3927 N. The 80 mm bore here strikes a middle ground, offering a safe working load of roughly 1508 N (about 60 percent of its 0.5 MPa push force) and a vertical lift capacity near 128.1 kg with a 2:1 safety margin. Choose this unit if your fixture requires on-site stroke tuning between 15 and 35 mm, and confirm your setup needs the male M22x1.5 rod thread along with the -S magnet for switch sensing.
Remember that a plain compact cylinder does not hold its load if air pressure drops or the valve centers; the piston will drift, as the fixed NBR bumper only decelerates near the end of travel and the R screw is a mechanical stop, not a brake. To maintain vertical loads without live pressure, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
At 0.5 MPa this 80 mm bore cylinder provides 2513.3 N of push and 2267.8 N of pull. At 0.7 MPa the push increases to 3518.6 N and the pull to 3175 N. The theoretical maximum push is 513 kgf at 1.0 MPa.
The external M20x1.5 screw shortens the maximum 35 mm extend stroke down to 15 mm without altering the force output. The included -S magnet allows tracking of piston position using AirTAC reed or electronic solid-state switches.
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