
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-30S 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 10 to 40 mm on the machine — no shims, no part change.
The AirTAC SDAJ80X40-30S is a compact double-acting single-rod cylinder featuring an external M20x1.5 adjuster screw that dials the extend stop directly on your machine. You can tune the outward stroke anywhere between 10 and 40 mm without shims or part changes, while the retract remains full length. This on-site flexibility drastically reduces commissioning time during tooling changeovers.
Delivering 2513.3 N of push force at 0.5 MPa, the adjuster sets the mechanical stop without altering the piston area, meaning output matches a standard SDA of this bore. The short riveted body saves valuable axial mounting depth where larger profile cylinders cannot fit. End-of-stroke energy is managed by a fixed NBR bumper that decelerates the load, and the built-in magnet supports AirTAC reed or electronic switches for position sensing.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X40-30S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 40 mm |
| Adjustable range | 10 – 40 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 30 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. |
| ×40 | Maximum stroke length in mm. |
| -30 | 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 10-40 mm extend stop during press changeovers to accommodate different material thicknesses without machining custom spacers.
Lift loads up to 128.1 kg with a 2:1 safety margin, using the M20x1.5 screw to fine-tune the exact raise height at upper assembly stations.
Adjust the outward stroke on the fly to position heavy 2513.3 N payloads precisely at testing stations before the retract cycle initiates.
Selecting this 80 mm bore provides 2513.3 N push at 0.5 MPa. If your application requires less force, stepping down to the SDAJ63 yields 1558.6 N; conversely, moving up to the SDAJ100 provides 3927 N for heavier payloads. With a calculated safe working load of roughly 1508 N (about 60% of the 0.5 MPa push figure), it handles vertical lifts up to 128.1 kg with a 2:1 safety margin. This model is ideal for setups requiring frequent on-machine stroke tuning. Confirm your bore, 40 mm max stroke, 30 mm window, PT3/8 port, and the built-in magnet.
Remember that a standard cylinder does not hold position upon air loss or valve centring. The piston will drift, and the fixed NBR bumper only decelerates near the end of travel—it is not a lock. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve. Operating speed ranges from 30-500 mm/s.
Quick checklist
At 0.5 MPa it delivers 2513.3 N push and 2267.8 N pull. At 0.7 MPa it provides 3518.6 N push and 3175 N pull. The theoretical maximum push is 513 kgf at 1.0 MPa.
The M20x1.5 screw shortens the extend stop by up to 30 mm, yielding a usable 10-40 mm outward range. The included -S magnet works with AirTAC reed or electronic switches for position feedback.
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