
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S 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 35 to 75 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X75-40S is a compact double-acting double-rod cylinder featuring an external extend stop. A front M12x1.25 adjustment screw lets you dial the outward travel down from its 75 mm maximum to as little as 35 mm directly at the fixture, eliminating the need for shims or part swaps during changeovers. Retract travel remains full length.
The short riveted body saves valuable axial mounting depth in tight machinery. End-of-stroke deceleration is handled by a fixed NBR bumper, and the built-in magnet (-S) supports AirTAC reed or electronic solid-state switches.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X75-40S |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 75 mm |
| Adjustable range | 35 – 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 40 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. |
| -40 | 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).
Fine-tune the 40 mm adjustment window on the packaging line to adapt flap folding depth, ensuring precise positioning across varied box sizes.
Choose this 40 mm unit when you need on-site stroke tuning between 35 and 75 mm.
Confirm the PT1/8 port, the 16 mm rod with female M8x1.25 end thread, and the 40 mm adjustment window. Note that a plain cylinder does not hold a load if air pressure drops or the valve centers—the fixed bumper only decelerates the stroke end and the adjuster is a mechanical stop, not a lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
The theoretical maximum push is 128 kgf at 1.0 MPa.
The M12x1.25 R screw shortens the extend stroke from 75 mm down to 35 mm without changing the force. The built-in -S magnet works with AirTAC reed or electronic solid-state switches for position sensing.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.