Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-100S 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 SAIJ50AX300-100S
The AirTAC SAIJ50X300-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 300mm nominal stroke that can be dialed back by up to 100mm, yielding a 200-300mm usable travel window for exact end-position tuning at commissioning. The 50mm bore generates 982N of push force at 0.5MPa and 1374N at 0.7MPa.
This unit includes a SUS420J2 stainless steel rod for improved corrosion resistance and a magnet for CMSE or DMSE sensors. The extruded aluminum barrel integrates sensor grooves on both sides. It uses a PT tapered port thread and offers variable air cushions at both ends to decelerate the load.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-100S |
|---|---|
| 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 SAIJ50AX300-100S
| 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 SAIJ50AX300-100S Is Used
Machine Changeover
Dial in the 200-300mm travel window during product size transitions on a packaging line without adding external physical stops.
End-Position Tuning
Fine-tune the exact retract end-position at commissioning using the rear screw to perfect the resting state of the assembly.
Variable End Stops
Adjust the effective stroke on the fly for automated machinery that processes multiple part lengths within the 100mm range.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-100S the Right Cylinder?
Choose this 50mm bore when your application requires 982N of push force at 0.5MPa, stepping up from a 40mm bore that offers 628N, or down from a 63mm bore providing 1559N. The 100mm adjustment range is ideal for machine setups requiring variable end-stops or frequent product-size changeovers without physically swapping the cylinder.
Because the 300mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the 20mm rod. For load-holding without live air pressure, note that the rear adjuster acts only as a travel stop and does not function as a lock; consider an AirTAC SAIL or BSAI cylinder for those requirements. This SAIJ model 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 SAIJ50AX300-100S FAQ
This 50mm bore cylinder provides 982N of push force and 825N of pull force at 0.5MPa. At 0.7MPa, the push force increases to 1374N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 300mm nominal stroke down to 200mm. It sets the retract end-position but does not lock or hold the load without live air pressure.
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