Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X90-100B
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X90-100B 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 0 to 90 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke90 mm
- Adjustable range0–90 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 SDAJ25X90-100B
The AirTAC SDAJ25X90-100B is a compact double-acting single-rod cylinder featuring an external extend stop. An M8x1.25 adjuster screw lets you dial the forward end-position anywhere from 0 to 90 mm directly on your machine, eliminating the need for shims or part swaps during changeovers. Because the mechanism sets the mechanical stop rather than altering the piston area, output force remains identical to a standard SDA of this bore, delivering 245.4 N of push at 0.5 MPa.
Built with a short riveted body, this unit saves valuable axial mounting depth where round-body or larger profile variants will not fit. It carries a male M8x1.25 piston rod thread for direct mounting, and relies on a fixed NBR bumper at each end to decelerate the stroke. Note that this specific SKU lacks a piston magnet, so it cannot host reed or electronic switches.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X90-100B Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X90-100B |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 90 mm |
| Adjustable range | 0 – 90 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 100 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 SDAJ25X90-100B
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×90 | Maximum stroke length in mm. |
| -100 | 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 SDAJ25X90-100B Is Used
Tooling Changeover
Dial the extend stop from 0 to 90 mm via the M8 screw to accommodate different part heights on a machining line without machining new spacers.
Variable Carton Sealing
Set the precise forward contact position on the fly for mixed box sizes, using the 245.4 N push force to firmly press flaps without crushing the cardboard.
Prototype Positioning
Iterate trial strokes rapidly during R&D setup; the fixed NBR bumper absorbs the end shock while you find the exact 0-90 mm extension needed for a new assembly process.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X90-100B the Right Cylinder?
When sizing this 25 mm bore, evaluate both neighbors: stepping down to the SDAJ20 yields 157.1 N push at 0.5 MPa, while moving up to the SDAJ32 provides 402.1 N. The 245.4 N output here supports a safe working load of roughly 147 N, which translates to a vertical lift capacity of about 12.5 kg with a 2:1 safety margin. Choose this model if your fixture requires frequent on-site stroke tuning to accommodate varying part heights.
Verify your parameters: 25 mm bore, 90 mm maximum stroke, 100 mm adjust window, and an M5x0.8 air port. This SKU includes the male M8x1.25 rod thread (-B) and no magnet. Remember that a plain cylinder does not hold its load if air pressure drops or the valve is centered; the piston will drift. 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 0–90 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 SDAJ25X90-100B FAQ
This 25 mm bore cylinder delivers 245.4 N push and 206.2 N pull at 0.5 MPa. At 0.7 MPa it provides 343.6 N push and 288.6 N pull. The theoretical maximum push is 50 kgf at 1.0 MPa.
Turning the external R (M8x1.25) screw shortens the extend stop by up to 100 mm, giving a usable forward range of 0 to 90 mm. The screw is a mechanical stop, not a mid-stroke lock; the cylinder cannot hold a load without live air pressure.
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