
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X85-50S is a genuine double-acting COMPACT cylinder (Ø32mm bore) whose extend end-position is set by an external M10×1.25 adjustment screw. You can dial the stroke anywhere from 35 to 85 mm on the machine — no shims, no part change.
The AirTAC SDAJ32X85-50S is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. By turning the R (M10x1.25) screw, you shorten the forward stroke on-site across a 35 to 85 mm window without changing parts.
Its short riveted body saves valuable axial mounting depth where round-body or profile cylinders cannot fit. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Because this unit carries the -S option, a built-in piston magnet enables position sensing when paired with AirTAC reed or electronic switches.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X85-50S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Max stroke | 85 mm |
| Adjustable range | 35 – 85 mm |
| Adjuster thread (R) | M10×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M6×1.0 F / M10×1.25 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 50 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 346 N | 346 N |
| 0.7 MPa | 484 N | — |
| Max (@1.0 MPa) | 70 kgf | |
SDAJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod SDA push of the same bore. Actual usable force is lower than theoretical due to friction.
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 32 | Bore size in mm. |
| ×85 | Maximum stroke length in mm. |
| -50 | 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 M10 adjuster to set a precise 40 mm extend stop for a clamping head, absorbing setup variance without machining new spacers.
Reconfigure the extend stroke from 60 to 75 mm on a packaging line during product family changeovers, using the integrated magnet to confirm the new endpoint.
Choose this specific configuration if your machine commissioning requires frequent on-site stroke tuning between 35 and 85 mm.
Confirm the bore, 85 mm maximum stroke, 50 mm adjust window, PT1/8 port, and the built-in magnet (S). The female M6x1.0 rod-end thread handles tooling attachments; avoid side loading to preserve seal life. Remember that a plain cylinder does not hold a load on air loss or valve centring—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
At 0.7 MPa, push increases to 563 N and pull to 483.8 N. The theoretical maximum push is 82 kgf at 1.0 MPa.
Turning the external M10x1.25 screw shortens the forward stroke by up to 50 mm, allowing usable extends between 35 and 85 mm. The -S suffix denotes a built-in piston magnet for use with AirTAC reed or electronic switches.
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