Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X75-30
The AirTAC Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X75-30 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 45 to 75 mm on the machine — no shims, no part change.
- BoreØ25 mm
- Max stroke75 mm
- Adjustable range45–75 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 SDAJ25X75-30
The AirTAC SDAJ25X75-30 is a compact double-acting single-rod cylinder featuring an external adjustable extend stop. Turning the R (M8x1.25) screw lets you dial the outward stroke down from the 75 mm maximum to a 45 mm minimum directly on the machine, eliminating the need for shims or part swaps during changeovers. Retract remains full length.
Because the adjuster only sets the mechanical stop position, force is identical to a standard SDA of this bore, delivering 245.4 N push at 0.5 MPa. The short riveted body saves axial mounting depth where round-body units will not fit. End shock is managed by a fixed NBR bumper, which decelerates the piston near the end of travel but is not an adjustable air cushion.
Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X75-30 Technical Specifications
| Model | Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X75-30 |
|---|---|
| Series | SDAJ compact adjustable-stroke cylinder |
| Bore size | Ø25 mm |
| Max stroke | 75 mm |
| Adjustable range | 45 – 75 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 30 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 SDAJ25X75-30
| SDAJ | Compact double-acting cylinder with adjustable stroke. |
|---|---|
| 25 | Bore size in mm. |
| ×75 | Maximum stroke length in mm. |
| -30 | 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 SDAJ25X75-30 Is Used
Changeover-Heavy Packaging
Dial the extend stop from 45 to 75 mm via the M8x1.25 screw to accommodate varying carton depths on a packaging line without swapping cylinders.
Trial Positioning Jigs
Leverage the 245.4 N push at 0.5 MPa to probe and set exact clamping depths during initial fixture setup, locking the mechanical stop once the ideal position is found.
Vertical Lift Stops
Safely lift 12.5 kg loads with a 2:1 margin while using the external adjuster to vary the raise height, preventing over-travel in tight vertical lifting stations.
Is the Airtac SDAJ12~25 Adjustable Ultra-Thin Cylinder SDAJ25X75-30 the Right Cylinder?
When sizing this 25 mm bore, check both neighbours: the SDAJ20 provides 157.1 N push at 0.5 MPa, while the SDAJ32 offers 402.1 N. This model sits perfectly in the middle at 245.4 N, yielding a safe working load of roughly 147 N (about 60 percent of the 0.5 MPa figure) and a vertical lift capacity near 12.5 kg with a 2:1 margin. Choose this unit when you need frequent on-site stroke tuning between 45 and 75 mm.
Confirm your parameters: 25 mm bore, 75 mm max stroke, 30 mm adjust window, M5x0.8 port, female M5x0.8 rod thread, and no magnet. This SKU lacks a piston magnet, so it cannot accept reed or electronic switches; specify the -S option if sensing is required. Remember that a plain cylinder does not hold position on air loss or valve centring—the fixed bumper only decelerates near the end. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Need on-machine stroke fine-tuning?
- ✓ Target position within 45–75 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 SDAJ25X75-30 FAQ
This 25 mm bore double-acting cylinder provides 245.4 N push and 206.2 N pull at 0.5 MPa, 343.6 N push and 288.6 N pull at 0.7 MPa, with a theoretical maximum push of 50 kgf at 1.0 MPa.
The external M8x1.25 screw acts as a mechanical stop, allowing you to shorten the extend stroke from the 75 mm maximum down to 45 mm. It does not alter the 245.4 N force output and is not a mid-stroke lock.
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Standard models are processed and dispatched in 3-5 business days.
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