Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S
The AirTAC SAIJ50X260-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 260 mm stroke that can be fine-tuned backward by up to 20 mm, yielding a usable travel window of 240-260 mm. Delivering 982 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod and PT tapered ports.
This adjustable-stroke design allows precise end-position tuning during commissioning without swapping the cylinder or adding external stops. The extruded aluminum barrel features sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. The rear adjuster functions strictly as a travel stop to set the retraction end, not as a lock to hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 260 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 SAIJ50AX260-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×260 | 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 SAIJ50AX260-20S Is Used
Product Changeover
Dial in the 240-260 mm travel window during format size changes on a packaging line without swapping out the entire actuator.
End-Position Tuning
Fine-tune the retraction end-stop during machine commissioning to achieve precise mechanical alignment without external shims.
Variable End Stops
Provide adjustable physical stops for assembly stations where multiple parts with slightly different heights are processed on the same fixture.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX260-20S the Right Cylinder?
Select this 50 mm bore cylinder when an application requires 982 N of push force at 0.5 MPa but demands variable end-stop positioning. If your setup needs less force, stepping down to a 40 mm bore yields 628 N; if more thrust is required, stepping up to a 63 mm bore provides 1559 N. The adjustable 240-260 mm window is ideal for product-size changeovers, replacing the need for a fixed-stroke SAI cylinder when exact end positions fluctuate.
Because the 260 mm stroke exceeds 300 mm is false here, but for any stroke of 300 mm or more, an external guide is recommended to manage side loads. This SAIJ50X260-20-S is dimensionally interchangeable per ISO 15552. To match this configuration exactly, specify the 50 mm bore, 260 mm stroke, 20 mm adjustment, PT port thread, SUS420J2 rod material, and the -S magnet. For load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ50AX260-20S FAQ
The rear adjusting screw acts as a stopper that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 240-260 mm, allowing you to trim the retraction end-position without modifying the cylinder mounting.
At 0.5 MPa operating pressure, the SAIJ50X260-20-S generates 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
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