Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30 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 SAIJ50AX300-30
The AirTAC SAIJ50X300-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling precise end-position tuning without swapping out the unit. It features a 300 mm nominal stroke that can be dialed back by up to 30 mm, creating a 270-300 mm usable travel window ideal for product changeovers. Delivering 982 N of push force at 0.5 MPa, it handles mid-range automation tasks with ease.
This variant utilizes a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads (G1/4). The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30 |
|---|---|
| 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 SAIJ50AX300-30
| 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 SAIJ50AX300-30 Is Used
Machine Changeover
Dial in the 270-300 mm travel window during product size transitions to set new retract endpoints without physically swapping the cylinder.
End-Stop Calibration
Fine-tune the final retract position at commissioning using the rear screw, avoiding the need to bolt on external mechanical stops.
Material Handling
Pushes or diverts loads with 982 N of force at 0.5 MPa, with the adjuster serving as a deceleration stop rather than a load-holding lock.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX300-30 the Right Cylinder?
Select this 50 mm bore when an application requires roughly 982 N of push force at 0.5 MPa, stepping up from a 40 mm bore (628 N) or down from a 63 mm bore (1559 N). The adjustable stroke is chosen over a fixed SAI cylinder when commissioning requires fine-tuning the retract end position or accommodating slight product size variations on a line. Because the stroke is 300 mm, an external guide should be used to support the load and prevent excessive rod side-loading.
To match this exact ISO 15552 footprint for replacement, confirm the 50 mm bore, 300 mm stroke, 30 mm adjustment range, PT port threads, and the specific mounting set. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for pilot-operated locking, consider the SAIL or BSAI series.
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 SAIJ50AX300-30 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw allows you to shorten the effective travel from its 300 mm nominal stroke down to 270 mm. This creates a 270-300 mm adjustable window, acting as a mechanical stop to set the exact end position during setup.
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