
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X85-50 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 SDAJ32X85-50 is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. An M10x1.25 adjuster screw lets you dial the forward end-position anywhere between 35 and 85 mm directly on the machine, eliminating the need for shims or part swaps during changeovers. Retract remains at the full stroke length.
The short riveted body minimizes axial mounting depth where a larger profile cylinder will not fit. End-of-travel deceleration relies on a fixed NBR bumper, not an adjustable air cushion.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ32X85-50 |
|---|---|
| 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 extend stop between 35 and 85 mm via the M10x1.25 screw to accommodate varying product widths on a single fixture without machining new spacers.
Set the precise push depth for different box profiles on the fly; the fixed NBR bumper absorbs the end shock during high-speed repetitive folding.
This SKU lacks the -S magnet, so it cannot accept position switches; choose the -S variant if you need reed or electronic sensing. Confirm your requirements for the 85 mm stroke, 50 mm window, PT1/8 port, and female M6x1.0 rod-end thread.
Operators who require frequent trial positioning or rapid format changes benefit most from this on-site tuning. Note that a plain cylinder does not hold a load if air pressure drops or the valve centers—the piston drifts. For load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
The theoretical maximum push is 82 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, proof pressure is 1.5 MPa, and speed ranges from 30-500 mm/s.
The external M10x1.25 screw shortens the extend stroke by up to 50 mm, allowing you to set the forward stop anywhere from 35 to 85 mm. It is a mechanical stop only, not a mid-stroke lock; the cylinder cannot hold a load on air loss and requires an external rod lock for holding.
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