
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-75 is a genuine double-acting COMPACT cylinder (Ø40mm bore) whose extend end-position is set by an external M12×1.25 adjustment screw. You can dial the stroke anywhere from 0 to 75 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X75-75 is a compact double-acting double-rod cylinder featuring an external adjustable extend stop. By turning the R (M12x1.25) screw, you can dial the forward end-position from 0 to 75 mm directly on your machine, eliminating the need for shims or part swaps during changeovers. Retract remains full length, and because the adjuster sets the mechanical stop rather than the piston area, output force equals a standard SDA of this bore.
The bore dictates a 16 mm rod and PT1/8 porting. End shock is handled 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 host reed or electronic switches.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-75 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 75 mm |
| Adjustable range | 0 – 75 mm |
| Adjuster thread (R) | M12×1.25 |
| Port size | PT1/8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M8×1.25 F / M14×1.5 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 75 mm. SDAJ is a double-rod cylinder. Specifications follow the official AirTAC SDAJ datasheet.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 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. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -75 | 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).
Adjust the forward stroke on the fly to fold different box sizes without changing cylinders, relying on the fixed NBR bumper to absorb end shock.
Set precise lower stopping heights for a 32 kg lift payload, using the M12x1.25 adjuster screw to define the exact extend endpoint.
Choose this model when your fixture requires frequent trial positioning or on-site stroke tuning.
Confirm the 40 mm bore, 75 mm maximum stroke, 75 mm adjustment window, and PT1/8 porting suit your manifold. This base configuration has no magnet (no -S), meaning position sensing is unavailable unless you specify the -S variant. Remember that a plain cylinder does not hold its load on air loss or valve centring; the fixed bumper only decelerates near the end and the R screw is a mechanical stop, not a lock. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
Operating pressure is 0.15-1.0 MPa, proof pressure is 1.5 MPa, and speed ranges from 30-500 mm/s.
This specific SKU lacks a piston magnet, so it cannot take magnetic switches; you must select the -S variant to use AirTAC reed or electronic sensors.
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