Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30
The AirTAC SAIJ50X290-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 290 mm stroke with a 30 mm adjustment range, yielding a usable travel window of 260-290 mm for exact end-position tuning at commissioning. Delivering 982 N of push force at 0.5 MPa, it handles mid-range automation tasks with precision.
This model incorporates an SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads (G1/4). The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE or DMSE switches later if positioning feedback becomes necessary.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 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 SAIJ50AX290-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×290 | 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 SAIJ50AX290-30 Is Used
Machine Changeover
Dial in the 260-290 mm travel window during product size changes to set new end positions rapidly without swapping cylinders.
Variable End Stops
Use the rear adjuster to fine-tune the retraction point during commissioning, accommodating mechanical tolerances in the fixture.
Material Handling
Provides 982 N of push force at 0.5 MPa for diverting or positioning mid-weight pallets along an assembly line.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-30 the Right Cylinder?
Choose this 50 mm bore when an application requires approximately 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 selected over a fixed SAI cylinder when you need variable end-stops or fine-tuning during product changeovers without adding external stops. Because the nominal stroke is 290 mm, ensure adequate external guidance to prevent excessive side-loading on the rod.
To match this ISO 15552 dimensionally interchangeable cylinder, specify a 50 mm bore, 290 mm stroke, 30 mm adjustment, PT ports, and the SUS420J2 rod material. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an external rod lock or the SAIL 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 SAIJ50AX290-30 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 allows you to shorten the effective stroke by up to 30 mm, creating a usable travel window of 260-290 mm from the 290 mm nominal stroke. It acts as a mechanical stop and does not lock the load without continuous air pressure.
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