The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X20-20B 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 0 to 20 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X20-20B is a double-acting compact cylinder featuring an external R (M27x2.0) adjustment screw that dials the extend stop from 0 to 20 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 SDA of this bore, delivering 3927 N of push at 0.5 MPa. This specific SKU uses a male M26x1.5 piston rod thread and lacks a piston magnet, meaning it cannot accept reed or electronic switches without upgrading to the -S variant.
Designed to save axial mounting depth where round-body or larger profile units will not fit, this riveted-body unit relies on a fixed NBR bumper at each end to decelerate the stroke. It is not equipped with adjustable air cushions, so for high-energy cycles you should slow the approach or add an external shock absorber. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 air port matches the 100 mm bore specification.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X20-20B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 20 mm |
| Adjustable range | 0 – 20 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 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 | 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. |
| ×20 | 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).
Dial in the exact 0-20 mm extend stop for pressing bearings, using the 3927 N push force without swapping mechanical shims during product changeovers.
Lift loads up to 200.2 kg with a 2:1 margin and fine-tune the extend endpoint on-site, though an external check valve is required to hold the load safely.
Fit the short riveted body into tight machine frames to deliver 5497.8 N of push at 0.7 MPa where deeper profile cylinders cannot physically mount.
When sizing this actuator, evaluate your force requirements bidirectionally: stepping down to an SDAJ80 yields 2513.3 N of push at 0.5 MPa, while this 100 mm bore provides 3927 N, yielding a safe working load of roughly 2356 N (about 60 percent of the 0.5 MPa figure) or a vertical lift capacity near 200.2 kg with a 2:1 safety margin. Choose this model if your fixture requires precise on-site extend tuning between 0 and 20 mm during changeovers, and confirm your parameters: 100 mm bore, 20 mm stroke, 20 mm window, PT3/8 port, male M26x1.5 rod, and no magnet. Remember that a plain cylinder does not hold a load if air is lost or the valve is centered—the piston drifts, and the fixed bumper only decelerates near the end of travel. For suspended or vertical loads, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa this 100 mm bore cylinder provides 3927 N of push and 3524.9 N of pull. At 0.7 MPa, push increases to 5497.8 N. The theoretical maximum push is 801 kgf at 1.0 MPa.
The M27x2.0 adjuster screw shortens the extend stroke by up to 20 mm, allowing you to set the stop anywhere from 0 to 20 mm on the machine. This SKU includes a male M26x1.5 piston rod thread, and because it lacks the -S magnet option, it cannot accept reed or electronic switches.
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