
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X70-40S 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 30 to 70 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X70-40S is a double-acting compact cylinder featuring an external extend stop. Turning the R (M27x2.0) screw lets you dial the forward stroke from 30 to 70 mm directly on the machine, avoiding part swaps during changeovers. Retract remains full length.
The adjuster sets the stop position rather than the piston area, so output matches a standard SDA of this bore at 3927 N push at 0.5 MPa. The short riveted body saves axial mounting depth where a larger profile cylinder will not fit. A fixed NBR bumper decelerates the stroke end, and the built-in magnet supports reed or electronic switches.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X70-40S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 70 mm |
| Adjustable range | 30 – 70 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. |
| ×70 | 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).
Turn the M27x2.0 screw to set the 30-70 mm extend stop for pressing bearings without swapping shims on the line.
Lift up to 200.2 kg with a 2:1 safety margin, using the 3927 N push force to elevate heavy assemblies.
Fit the compact riveted body into tight machine frames to deliver 801 kgf max push for localized forming tasks.
This 100 mm bore delivers 3927 N push at 0.5 MPa. If your setup is lighter, the SDAJ80 drops to 2513.3 N, representing the next step down. Since 100 mm is the largest in the family, moving up requires a different series. The fixed bumper only decelerates near the end; a plain cylinder does not hold a load on air loss, so add an external rod lock or pilot-operated check valve for vertical holding.
Choose this model when you need heavy push force plus on-site stroke tuning. It carries a 40 mm adjustment window, a PT3/8 port, and a 32 mm rod. The -S code confirms the internal magnet for sensing, and the rod end has female M18x1.5 threads.
Quick checklist
At 0.5 MPa it provides 3927 N push and 3524.9 N pull. At 0.7 MPa it provides 5497.8 N push and 4934.8 N pull. The theoretical maximum push is 801 kgf at 1.0 MPa.
The R (M27x2.0) screw shortens the extend stop by up to 40 mm, giving a usable 30-70 mm forward range. The included -S magnet works with AirTAC reed or electronic switches for position sensing.
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