Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-10S 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 SAIJ50AX290-10S
The AirTAC SAIJ50X290-10-S is a double-acting, single-rod 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 280 to 290 mm, letting you dial back the nominal 290 mm stroke by up to 10 mm during machine commissioning.
This SKU is equipped with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It uses PT tapered port threads (G1/4) and relies on a 20 mm rod with an M16x1.5 thread, which handles side loads well, though the 290 mm stroke still benefits from an external guide.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-10S |
|---|---|
| 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 SAIJ50AX290-10S
| 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 SAIJ50AX290-10S Is Used
End-Position Tuning
Fine-tune the 290 mm retract stroke by up to 10 mm during setup to perfectly align tooling without machining new hard stops.
Product Changeover
Quickly adjust the travel window down to 280 mm on packaging lines when switching to a slightly smaller product format.
Conveyor Diverter
Adjusts the stroke window for diverting actuators on conveyors where exact positioning against a moving load is critical.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-10S the Right Cylinder?
Choose this 50 mm bore when an application requires roughly 982N of push force at 0.5 MPa, stepping up from a 40 mm bore (628N) or down from a 63 mm bore (1559N). The 10 mm rear adjuster is selected for fine-tuning the retract end position without swapping cylinders or adding external stops.
For an exact ISO 15552 replacement, match the 50 mm bore, 290 mm stroke, 10 mm adjustment, PT port threads, and the -S magnet. Note that the rear adjuster acts only as a travel stop, not a load-holding brake; if you need to hold position without live air, select an AirTAC SAIL or BSAI cylinder instead. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
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 SAIJ50AX290-10S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982N of push force and 825N of pull force. It can reach up to 1374N push force at 0.7 MPa.
The rear adjuster screw lets you shorten the effective stroke from 290 mm down to 280 mm. It acts as a mechanical stop to set the end position, but it does not lock the load without continuous air pressure.
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