Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X100-40
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X100-40 is a genuine double-acting COMPACT cylinder (Ø25mm bore) whose extend end-position is set by an external M8×1.25 adjustment screw. You can dial the stroke anywhere from 60 to 100 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke100 mm
- Adjustable range60–100 mm
- Adjuster threadM8×1.25
- 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 SDAJ25X100-40
The AirTAC SDAJ25X100-40 is a compact double-acting single-rod cylinder featuring an external extend stop. An M8x1.25 adjuster screw lets you dial the outward travel anywhere between 60 and 100 mm directly on the machine, saving axial mounting depth where round-body units fail to fit. Because the mechanism only sets the mechanical stop position, output force remains identical to a standard 25 mm bore SDA, giving you 245.4 N of push at 0.5 MPa.
This riveted-body actuator relies on a fixed NBR bumper at each end to decelerate the stroke, meaning it is not an adjustable air cushion or a mid-stroke lock. Operating speeds span 30 to 500 mm/s. Note that this specific SKU lacks a piston magnet, so it cannot host reed or electronic switches without upgrading to the -S variant.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X100-40 Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X100-40 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 100 mm |
| Adjustable range | 60 – 100 mm |
| Adjuster thread (R) | M8×1.25 |
| Port size | M5×0.8 |
| Acting type | Double acting |
|---|---|
| Rod end thread | M5×0.8 F / M8×1.25 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 40 mm. Force is unchanged from a standard SDA of the same bore. Specifications follow the official AirTAC SDAJ datasheet.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 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 SDAJ25X100-40
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 SDAJ25X100-40 Is Used
Product Changeover Lines
Dial the extend stop from 60 to 100 mm via the M8x1.25 screw to accommodate different package widths without machining new spacers.
Trial Positioning Fixtures
Leverage the 245.4 N push at 0.5 MPa to probe optimal clamping depths on prototype parts before locking the final mechanical stop.
Vertical Lift Stops
Lift up to 12.5 kg with a 2:1 safety margin and fine-tune the downward extend endpoint to prevent crushing delicate components.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X100-40 the Right Cylinder?
When sizing this unit, look both ways: stepping down to the SDAJ20 yields 157.1 N push at 0.5 MPa, while moving up to the SDAJ32 provides 402.1 N. This 25 mm bore strikes a middle ground, offering a safe working load of roughly 147 N (about 60 percent of its 245.4 N capacity) and a vertical lift capability near 12.5 kg with a 2:1 safety margin. Choose this model if your fixture requires frequent on-site stroke tuning during setup or product changeover.
Confirm your parameters: 25 mm bore, 100 mm maximum stroke, 40 mm adjustment window, M5x0.8 port, female M5x0.8 rod-end thread, and no magnet. Remember that a plain pneumatic cylinder does not hold its load when air is lost or the valve is centred—the piston drifts. For suspended or vertical loads, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 60–100 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 M8×1.25 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 SDAJ25X100-40 FAQ
At 0.5 MPa it provides 245.4 N push and 206.2 N pull. At 0.7 MPa it delivers 343.6 N push and 288.6 N pull. The theoretical maximum push is 50 kgf at 1.0 MPa.
Turning the R (M8x1.25) screw shortens the extend end position by up to 40 mm, giving a usable outward travel of 60 to 100 mm. The retract stroke remains full. This screw acts only as a mechanical stop and does not alter force.
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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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Most inquiries answered within 7-8 hours.
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