
The AirTAC SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-40B 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 5 to 45 mm on the machine — no shims, no part change.
The AirTAC SDAJ40X45-40B is a compact double-acting double-rod cylinder featuring an external extend stop. An M12x1.25 adjuster screw lets you dial the outward stroke anywhere between 5 and 45 mm directly on the machine, eliminating the need for shims or part swaps.
This specific SKU includes a male M14x1.5 piston rod thread and lacks a piston magnet, meaning it cannot host reed or electronic switches. The short riveted body drastically reduces axial mounting depth where a larger profile cylinder would fail to fit. End-of-travel energy is managed solely by a fixed NBR bumper, which decelerates the piston but is not an adjustable air cushion.
| Model | Airtac SDAJ32~40 Adjustable Super Slim Cylinder SDAJ40X45-40B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Max stroke | 45 mm |
| Adjustable range | 5 – 45 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. |
| ×45 | 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).
Dial the 5-45 mm extend stop during initial commissioning to perfect the grip on varying part sizes without machining new spacers.
Set precise upper travel limits for a 32 kg lift payload, knowing the male M14x1.5 rod provides a robust mounting point for tooling.
Choose this 40 mm bore when the smaller variant lacks thrust and the larger one exceeds your spatial envelope.
Operators requiring frequent changeovers or trial positioning will benefit from the 5-45 mm on-site stop tuning. Remember that a standard cylinder does not hold position upon air loss or valve centering; the piston drifts, and the fixed bumper only decelerates near the end of travel. For suspended loads, integrate an external rod lock or pilot-operated check valve. Confirm your requirements for the PT1/8 port, 40 mm bore, 45 mm max stroke, 40 mm window, and the male M14x1.5 rod thread.
Quick checklist
The M12x1.25 screw shortens the extend stop up to 40 mm, giving a usable 5-45 mm range. It is a mechanical stop, not a mid-stroke lock; the cylinder will drift if air is lost, so use an external rod lock for load holding.
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