
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20SB 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 25 to 45 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X45-20SB is a compact double-acting single-rod cylinder built for tight axial spaces, featuring a built-in piston magnet and a male M26x1.5 piston rod thread. A fixed NBR bumper decelerates the stroke end, while the external R (M27x2.0) adjuster screw lets you dial the extend stop down by 20 mm on-site, yielding a usable 25 to 45 mm forward travel. Retract remains full length.
Because the adjuster sets the mechanical stop rather than altering the piston area, output force equals a standard SDA of this bore, delivering 3927 N push at 0.5 MPa. The short riveted body saves mounting depth where larger profile or round-body units will not fit, and it accepts standard AirTAC compact-cylinder accessories.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20SB |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø100 mm |
| Max stroke | 45 mm |
| Adjustable range | 25 – 45 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. |
| ×45 | 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 the 25-45 mm extend stop during commissioning to find the exact press depth for heavy bearings without swapping mechanical shims.
Adjust the forward position on the fly for different product heights on a high-force assembly line, leveraging the 3927 N push at 0.5 MPa.
Set precise upper travel limits for a 200.2 kg vertical lift rig, relying on the fixed NBR bumper to absorb the end-of-stroke shock.
When sizing this unit, consider the SDAJ80 which offers 2513.3 N push at 0.5 MPa, versus this 100 mm bore at 3927 N. This larger bore yields a safe working load of roughly 2356 N (about 60% of the 0.5 MPa figure) and a vertical lift capacity near 200.2 kg with a 2:1 margin. Choose the 100 mm if your setup-heavy line needs that extra push authority within a compact footprint.
This configuration includes the -S magnet for AirTAC reed or electronic switches and the -B male-thread M26x1.5 rod end. Operating speed spans 30-500 mm/s. Remember that a plain cylinder does not hold its load on air loss or valve centering; the bumper only decelerates near the end and the R screw is a mechanical stop, not a lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
This 100 mm bore double-acting cylinder provides 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 R (M27x2.0) screw shortens the extend stop from the 45 mm maximum down to 25 mm without changing the force. The included -S magnet works with AirTAC reed or electronic solid-state switches for position sensing.
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