
The AirTAC Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X45-30S is a genuine double-acting COMPACT cylinder (Ø80mm bore) whose extend end-position is set by an external M20×1.5 adjustment screw. You can dial the stroke anywhere from 15 to 45 mm on the machine — no shims, no part change.
The AirTAC SDAJ80X45-30S is a double-acting compact cylinder featuring an external M20x1.5 R adjuster screw that lets you dial the extend stop anywhere between 15 and 45 mm directly on the machine. Because the adjuster sets the mechanical stop rather than altering the piston area, output force remains identical to a standard 80 mm bore SDA, delivering 2513.3 N of push at 0.5 MPa. The short riveted body drastically reduces axial mounting depth, fitting into tight footprints where longer cylinders cannot.
This unit includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. Operating speed spans 30-500 mm/s, and the PT3/8 port ensures high flow for rapid cycling.
| Model | Airtac SDAJ80~100 Adjustable Super Slim Cylinder SDAJ80X45-30S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Max stroke | 45 mm |
| Adjustable range | 15 – 45 mm |
| Adjuster thread (R) | M20×1.5 |
| Port size | PT3/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M14×1.5 F / M22×1.5 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 30 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | Bore size in mm. |
| ×45 | Maximum stroke length in mm. |
| -30 | 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 15-45 mm extend stop during heavy press setup, leveraging the 2513.3 N push force to seat components without over-stressing tooling.
Adjust the stroke on-site for varying package sizes on a conveyor line, using the compact riveted body to fit within tight transfer station footprints.
Set precise lower limits for vertical lifts, safely managing loads around 128.1 kg with a 2:1 margin while relying on external checks for holding.
When sizing this model, compare its 2513.3 N push at 0.5 MPa against neighboring bores: the SDAJ63 provides 1558.6 N, while the SDAJ100 offers 3927 N. This 80 mm bore is the right choice when the smaller 63 mm lacks force or the larger 100 mm is too bulky. The 30 mm adjustment window is perfect for machines requiring frequent changeovers or trial positioning, allowing you to tune the 15-45 mm extend stroke without swapping shims or parts.
Keep in mind that a plain SDAJ does not hold position if air pressure drops or the valve is centered; the fixed bumper only decelerates near the end of travel. For load-holding applications without live pressure, you must integrate an external rod lock or pilot-operated check valve. This configuration includes the S magnet for sensing and a female M14x1.5 rod-end thread on a 25 mm rod.
Quick checklist
At 0.5 MPa, this 80 mm bore cylinder provides 2513.3 N of push force and 2267.8 N of pull force. At 0.7 MPa, push increases to 3518.6 N. The theoretical maximum push is 513 kgf at 1.0 MPa.
Turning the M20x1.5 R screw shortens the extend stroke by up to 30 mm, allowing you to set the end position anywhere between 15 and 45 mm. The -S option adds a piston magnet for use with AirTAC reed or electronic solid-state switches.
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