Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-40 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 SAIJ50BX260-40
The AirTAC SAIJ50X260-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 260 mm stroke that can be dialed back by up to 40 mm, yielding a precise 220-260 mm usable travel window for fine-tuning at commissioning. Delivering 982 N of push force at 0.5 MPa, it handles mid-range automation tasks with ease. The barrel is extruded aluminum with sensor grooves on both sides, and the PT tapered port threads ensure a metal-to-metal seal.
This model is equipped with a SUS304 stainless steel rod for superior corrosion resistance and features a 20 mm rod diameter with an M16x1.5 thread. The rear adjuster acts purely as a mechanical stop to set the retract end position and relies on the integrated air cushion for deceleration. It does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-40 |
|---|---|
| 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 SAIJ50BX260-40
| 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 SAIJ50BX260-40 Is Used
Product Changeover
Dial in the 220-260 mm travel window during format changes on a packaging line, avoiding the need to physically swap out cylinders for different carton sizes.
End-Stop Calibration
Fine-tune the retract end position during machine commissioning to perfectly seat parts, using the rear screw rather than fabricating custom external spacers.
Diversion Gates
Adjust the actuation reach on sorting conveyors where the exact stopping point of the diverter needs occasional field adjustment to accommodate varying product profiles.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX260-40 the Right Cylinder?
Select this 50 mm bore cylinder when an application requires a 220-260 mm stroke window and around 982 N of thrust at 0.5 MPa. If your setup demands less force, stepping down to a 40 mm bore yields 628 N, while stepping up to a 63 mm bore provides 1559 N. The adjustable stroke is ideal for product changeovers, allowing you to shift the end position without swapping the cylinder or adding external stops. Because the total stroke is 260 mm, ensure adequate external guiding to prevent excessive side loading on the rod.
To match this exact configuration for an ISO 15552 interchange, specify a 50 mm bore, 260 mm stroke, 40 mm adjustment range, PT ports, and the SUS304 (B) rod material. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. As this SKU lacks the -S magnet option, it cannot host CMSE reed or DMSE electronic sensors without modification.
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 SAIJ50BX260-40 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 260 mm nominal stroke down to 220 mm. It functions as a mechanical stop that works with the air cushion to decelerate the piston, but it does not lock the load without continuous air pressure.
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