
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20 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 25 to 45 mm on the machine — no shims, no part change.
The AirTAC SDAJ100X45-20 is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. By turning the R (M27x2.0) screw, you can dial the forward stroke down by up to 20 mm on-site, yielding a usable extend range of 25 to 45 mm without swapping shims or parts. Retract remains full, and because the adjuster only sets the mechanical stop position, output force equals a standard SDA of this bore at 3927 N push at 0.5 MPa.
This 100 mm bore unit saves substantial axial mounting depth where a larger profile body will not fit, utilizing a short riveted construction. End shock is handled solely by a fixed NBR bumper, which decelerates the stroke end but is not an adjustable air cushion. Note this specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches without changing to an -S variant.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ100X45-20 |
|---|---|
| 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 to 45 mm extend stop precisely during initial tooling setup to seat bearings without over-traveling, leveraging the 3927 N push force.
Quickly turn the R screw on-site to accommodate varying workpiece heights during line changeovers, avoiding the need to physically swap the cylinder.
Lift loads up to 200.2 kg with a 2:1 safety margin, adjusting the downward stop to prevent crashes while relying on external check valves for holding.
When sizing this actuator, look both directions for the right thrust. Stepping down, the SDAJ80 delivers 2513.3 N push at 0.5 MPa, which may be insufficient for heavy tooling. Stepping up is not possible as 100 mm is the largest bore in this compact family, making this the maximum force option. With a safe working load of roughly 2356 N (about 60 percent of the 0.5 MPa figure) and a vertical lift capacity near 200.2 kg using a 2:1 margin, it fits demanding press and clamp tasks.
Choose this model if your assembly line requires frequent on-machine stroke tuning between 25 and 45 mm during product changeovers. Confirm the bore is 100 mm, the window is 20 mm, and the port is PT3/8. This SKU has a female M18x1.5 rod thread and no magnet. Remember that a plain cylinder does not hold its load on air loss or valve centering; the fixed bumper only decelerates near the end. For secure load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
This 100 mm bore double-acting cylinder pushes at 3927 N and pulls at 3524.9 N at 0.5 MPa. At 0.7 MPa, push is 5497.8 N and pull is 4934.8 N. The theoretical maximum push is 801 kgf at 1.0 MPa. The air port is PT3/8.
Turning the M27x2.0 adjuster screw shortens the extend stop by up to 20 mm, giving a usable forward range of 25 to 45 mm. The screw is a mechanical stop, not a mid-stroke lock, so it cannot hold a load if air pressure is lost. This SKU also lacks a piston magnet, so it cannot use reed or electronic switches.
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