Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S
The AirTAC SAIJ50X30-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 30 mm nominal stroke that can be dialed back by up to 30 mm, providing a highly versatile 0-30 mm usable travel window for exact end-position tuning during machine commissioning. Delivering 982 N of push force at 0.5 MPa, it bridges the gap between smaller 40 mm bores and larger 63 mm units.
This variant includes an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and ships with a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop, meaning the load is never mechanically locked without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 30 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 SAIJ50AX30-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×30 | 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 SAIJ50AX30-30S Is Used
Product Changeovers
Dial in the exact 0-30 mm end-stop during format size changes on packaging lines without swapping out the physical cylinder.
Machine Setup
Fine-tune the retract position at commissioning to perfectly seat components, eliminating the need for external mechanical stops.
Variable End Stops
Adjust the effective stroke dynamically for short-travel clamping or pressing tasks that require precise positional tuning.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-30S the Right Cylinder?
Selecting this 50 mm bore makes sense when an application requires 982 N push force at 0.5 MPa, offering a step up from the 628 N of a 40 mm bore without the bulk of a 63 mm unit. The adjustable 0-30 mm travel window is chosen over a fixed SAI cylinder when setups demand variable end-stops or frequent product-size changeovers. Because the rear adjuster only trims the travel end and is not a locking device, any requirement to hold a load without continuous air pressure necessitates a SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock. For a true ISO 15552 replacement match, confirm the 50 mm bore, 30 mm stroke, PT tapered port threads, -30 adjustment, -S magnet, and the required mounting accessory from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ50AX30-30S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjusting screw allows you to shorten the 30 mm nominal stroke by up to 30 mm, creating a 0-30 mm usable travel window. It acts as a mechanical stop to set the end position and does not lock the load without live air.
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