
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X80-40 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 40 to 80 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X80-40 is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. A M27x2.0 adjuster screw lets you dial the forward stroke down from the 80 mm maximum to a 40 mm minimum directly on the machine, eliminating the need for shims or part swaps. Because the mechanism only sets the mechanical stop position, the output force remains identical to a standard SDA of this bore, delivering about 3927 N push at 0.5 MPa.
Built with a short riveted body, this unit saves axial mounting depth where a larger profile cylinder will not fit. It relies on a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. Note that this specific SKU lacks a piston magnet, so it cannot host reed or electronic switches without upgrading to the -S variant.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X80-40 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 80 mm |
| Adjustable range | 40 – 80 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. |
| ×80 | 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 M27x2.0 stop screw to set precise 40-80 mm forming depths on heavy presses without changing hardware, leveraging the 3927 N push at 0.5 MPa.
Adjust the extend position on the fly for varied metal panel sizes, using the fixed NBR bumper to absorb the high kinetic energy of the 100 mm bore.
Lift loads up to 200.2 kg with a 2:1 margin, tweaking the extend stop to clear obstacles, provided an external check valve holds the load safely.
When sizing this 100 mm bore actuator, consider the neighbouring SDAJ80, which provides 2513.3 N push at 0.5 MPa. Step up to this SDAJ100X80-40 when your application demands the full 3927 N push at 0.5 MPa. A practical computed insight for sizing is a safe working load of roughly 2356 N, representing about 60 percent of the 0.5 MPa figure, or a vertical lift capacity near 200.2 kg with a 2:1 safety margin.
This model is built for operators who require frequent on-site stroke tuning between 40 and 80 mm during changeovers. It features a PT3/8 port, a 32 mm rod, and a female M18x1.5 rod-end thread. Remember that a plain cylinder does not hold its load on air loss or valve centring; the piston drifts and the fixed bumper only decelerates near the end. For secure load holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 100 mm bore double-acting cylinder delivers 3927 N push and 3524.9 N pull at 0.5 MPa, 5497.8 N push and 4934.8 N pull at 0.7 MPa, with a theoretical maximum of 801 kgf at 1.0 MPa. The bore-fixed air port is PT3/8.
Turning the external R (M27x2.0) screw shortens the extend stop from the 80 mm maximum down to 40 mm, while retract remains full. This SKU has no piston magnet, so it cannot take a switch; you must select the -S variant to use reed or electronic sensors.
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