Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 is a genuine double-acting COMPACT cylinder (Ø16mm bore) whose extend end-position is set by an external M5×0.8 adjustment screw. You can dial the stroke anywhere from 0 to 40 mm on the machine — no shims, no part change.
- BoreØ16 mm
- Max stroke40 mm
- Adjustable range0–40 mm
- Adjuster threadM5×0.8
- Port sizeM5×0.8
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40
The AirTAC SDAJ16X40-40 is a compact double-acting single-rod cylinder featuring an external extend stop. An M5x0.8 adjuster screw lets you dial the forward stroke from 0 to 40 mm directly on the machine, saving axial mounting depth where larger profile bodies will not fit. Retract remains full length.
Because the adjuster sets the mechanical stop rather than the piston area, output force equals a standard SDA of this bore, delivering 100.5 N push at 0.5 MPa. End shock is absorbed by a fixed NBR bumper, which decelerates the stroke but is not an adjustable air cushion. This specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Max stroke | 40 mm |
| Adjustable range | 0 – 40 mm |
| Adjuster thread (R) | M5×0.8 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M3×0.5 F / M5×0.8 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. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 86 N |
| 0.7 MPa | 141 N | — |
| Max (@1.0 MPa) | 21 kgf | |
Force matches a standard SDA of the same bore; the adjuster only sets the stop position, not the area. Actual usable force is lower than theoretical due to friction.
Model Code: Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 16 | Bore size in mm. |
| ×40 | 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).
Where the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 Is Used
Trial Positioning
Dial the extend stop from 0 to 40 mm during prototype runs to find the exact contact point for a 60 N pressing task without machining new spacers.
Changeover Diverter
Re-set the mechanical stop in seconds when switching box sizes on a packaging line, using the 5.1 kg vertical lift capacity to route goods.
Sensor Calibration Rig
Gradually extend the 6 mm rod to probe delicate electronics, relying on the fixed NBR bumper to absorb end shock without crushing the component.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 the Right Cylinder?
When sizing this 16 mm bore, evaluate your neighbours: the SDAJ12 yields 56.5 N push at 0.5 MPa, while the SDAJ20 provides 157.1 N. This model offers a safe working load of roughly 60 N (about 60% of its 100.5 N capacity) and a vertical lift of 5.1 kg with a 2:1 margin. Choose it for setup-heavy lines needing on-site stroke tuning.
Confirm your parameters: 16 mm bore, 40 mm maximum stroke, 40 mm adjust window, M5x0.8 port, female M3x0.5 rod thread, and no magnet. Note that a plain cylinder drifts on air loss—the fixed bumper only decelerates near the end, so add an external rod lock or pilot-operated check valve for load holding.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 0–40 mm
- ✓ Force at your working pressure
- ✓ Access to reach the R adjuster
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the M5×0.8 adjuster after setting the stroke.
- check Avoid side load on the piston rod.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ16X40-40 FAQ
At 0.5 MPa it provides 100.5 N push and 86.4 N pull. At 0.7 MPa it provides 140.7 N push and 121 N pull. The theoretical maximum push is 21 kgf at 1.0 MPa.
Turning the M5x0.8 R screw shortens the extend stop by up to 40 mm, giving a usable extend range of 0 to 40 mm. It sets the mechanical stop position and does not alter force or lock the piston mid-stroke.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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