Airtac SAIJ50 Adjustable Cylinder SAIJ50AX325-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX325-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- 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 SAIJ50 Adjustable Cylinder SAIJ50AX325-40
The AirTAC SAIJ50X325-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 285-325 mm usable travel window by allowing you to trim up to 40 mm from the 325 mm nominal stroke. Delivering 982 N push force at 0.5 MPa, it handles moderate thrust requirements. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses a SUS420J2 stainless steel rod and PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune end positions during commissioning. It does not hold the load without live air pressure; for load-holding applications, consider the SAIL or BSAI series.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX325-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX325-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 325 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 SAIJ50AX325-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×325 | 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 SAIJ50AX325-40 Is Used
Machine Changeover
Dial in the 285-325 mm travel window during product size transitions without swapping the entire cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retract end position during machine commissioning to perfect the pickup or placement point of a tool.
Adjustable Stops
Set variable physical stops for parts moving down a line, allowing rapid reconfiguration of the end-of-stroke location.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX325-40 the Right Cylinder?
Select this 50 mm bore cylinder when an application requires precise end-position tuning without external stops. If your process demands less force, the 40 mm bore offers 628 N push at 0.5 MPa. If higher thrust is needed, the 63 mm bore provides 1559 N. The adjustable stroke is ideal for product changeovers on a shared line. Because the 325 mm stroke is relatively long, the 20 mm piston rod and M16x1.5 thread provide rigidity, but an external guide is recommended to prevent side-load damage. To match this ISO 15552 replacement, specify a 50 mm bore, 325 mm stroke, 40 mm adjustment, PT port, and no magnet. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ50AX325-40 FAQ
The rear adjuster lets you shorten the 325 mm nominal stroke by up to 40 mm, providing a usable travel window of 285-325 mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air.
It delivers 982 N push force and 825 N pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 1374 N. The operating speed range is 30-800 mm/s.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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