Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 25mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10
The AirTAC SAIJ50X25-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 25 mm travel to a precise usable window of 15-25 mm. Delivering 982 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and operates at speeds between 30-800 mm/s.
Because the rear screw acts purely as a mechanical stop to fine-tune the end position, it does not hold the load without live air pressure. This extruded aluminum profile cylinder utilizes a PT tapered port and includes sensor grooves on both sides, though a magnet is not included on this specific configuration.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 Is Used
Precision End-Stop Tuning
Dial in the exact clamping depth on short-stroke fixtures by adjusting the rear screw, achieving a precise 15 to 25 mm travel window without swapping cylinders.
Machine Changeover
Quickly adapt end positions during product size changes on a packaging line, using the 10 mm adjuster to accommodate varying material thicknesses on the fly.
Short-Stroke Assembly
Execute compact pressing and insertion tasks where a 982 N push force is required, relying on the SUS420J2 stainless rod for durability in tight spaces.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 the Right Cylinder?
Choose this 50 mm bore when you need more force than the 40 mm version (628 N at 0.5 MPa) but want a smaller footprint than the 63 mm option (1559 N). The 10 mm adjustment range is ideal for short-stroke applications requiring exact end-position tuning during commissioning without adding external stops. If your process requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
For an exact ISO 15552 replacement, match the 50 mm bore, 25 mm stroke, 10 mm adjustment, PT port thread, and your required mounting set. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. It can reach up to 1767 N of push force at 0.7 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 25 mm nominal stroke down to 15 mm. It only sets the end position and does not lock the load without live air pressure.
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