The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X25-20 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 5 to 25 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X25-20 is a compact double-acting single-rod cylinder engineered for heavy-duty positioning where the extend endpoint requires on-site tuning. A external M27x2.0 adjustment screw lets you dial the extend stop down by up to 20 mm, yielding a usable extend range of 5 to 25 mm without swapping shims or parts. Retract remains a full stroke. Because the adjuster sets the mechanical stop rather than the piston area, output force equals a standard SDA of this bore, delivering 3927 N push at 0.5 MPa.
This 100 mm bore unit features a short riveted body that saves axial mounting depth where a larger profile cylinder will not fit. It handles operating pressures from 0.15 to 1.0 MPa and speeds of 30-500 mm/s. End shock is managed by a fixed NBR bumper that decelerates the stroke end; it is not an adjustable air cushion. Note this SKU lacks a piston magnet and cannot accept sensing switches, though the -S variant adds one for reed or electronic detection.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X25-20 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 25 mm |
| Adjustable range | 5 – 25 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. |
| ×25 | 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 5 to 25 mm extend stop during press fit commissioning to prevent over-travel on delicate bearings, leveraging the 3927 N push at 0.5 MPa for secure seating.
Adapt to different heavy fixture heights on the fly using the M27x2.0 screw, saving axial space in tight machine cells with its compact riveted body while delivering 801 kgf max push.
Safely test vertical lift endpoints for a 200.2 kg payload by adjusting the extend stop on-site, knowing the fixed NBR bumper will decelerate the load at the end of travel.
Selecting this model means sizing both ways against your force needs. Dropping down to an SDAJ80 yields 2513.3 N push at 0.5 MPa, which may be insufficient for heavy jigs, whereas the 100 mm bore here provides a computed safe working load of roughly 2356 N (about 60% of its 3927 N capacity) and a vertical lift capability of approximately 200.2 kg with a 2:1 margin. Choose the 100 mm if your setup demands high thrust combined with the ability to fine-tune the extend endpoint on the machine.
Confirm your parameters: 100 mm bore, 25 mm maximum stroke, 20 mm adjust window, PT3/8 port, female M18x1.5 rod thread, and no magnet. Remember that a plain SDAJ does not hold position or load when air is lost or the valve is centred; the fixed bumper only decelerates near the end, and the adjuster is a mechanical stop, not a lock. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
This 100 mm bore cylinder features a PT3/8 air port. It generates 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 push of 801 kgf at 1.0 MPa.
The M27x2.0 screw shortens the extend stroke by up to 20 mm, allowing on-machine tuning between 5 and 25 mm; retract remains full. This specific SKU has no piston magnet and cannot take a switch, but the -S variant adds a magnet for reed or electronic sensors.
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