Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S
The AirTAC SAIJ50X300-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and provides a usable travel window of 270 to 300 mm, letting you dial back the nominal stroke by up to 30 mm. The extruded aluminum barrel includes sensor grooves on both sides, and this variant includes a magnet for position detection.
This model uses a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning. It is not a locking mechanism, so the cylinder will not hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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 SAIJ50AX300-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×300 | 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 SAIJ50AX300-30S Is Used
Product Changeovers
Dial in the exact 270-300mm retract distance on packaging lines without physically swapping cylinders for different package sizes.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to perfect pressing or locating operations, absorbing mechanical tolerances.
Variable End Stops
Adjust the travel limit on the fly for diverter gates that must handle varying product lengths on a single conveyor belt.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30S the Right Cylinder?
Choose this 50mm bore cylinder when you need 982N of thrust at 0.5 MPa and require variable end-stops for product changeovers. If your application demands less force, the 40mm bore offers 628N; if you need more power, the 63mm bore provides 1559N. The adjustable rear screw prevents the need to swap cylinders or bolt on external stops when trimming travel. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead. Because the stroke is 300mm, the 20mm piston rod and M16x1.5 thread should be paired with an external guide to prevent excessive side-loading on the extended rod. This SKU is dimensionally interchangeable per ISO 15552 and 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 SAIJ50AX300-30S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder generates 982N of push force and 825N of pull force. It can reach up to 1767N of push force at 0.9 MPa.
The rear adjuster screw lets you shorten the effective stroke by up to 30mm, creating a 270-300mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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