Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 240mm 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
- Stroke240 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 SAIJ50AX240-50
The AirTAC SAIJ50X240-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 190 to 240 mm window. Delivering 982 N of push force at 0.5 MPa, this 50 mm bore actuator provides reliable thrust for mid-range automation tasks.
This variant incorporates an SUS420J2 stainless steel piston rod for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, while the rear PT tapered port threads ensure a tight, leak-free pneumatic connection.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 240 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 SAIJ50AX240-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×240 | 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 SAIJ50AX240-50 Is Used
Variable End-Stop Forming
Dial in the exact 190 to 240 mm stroke depth on the fly for pressing or forming operations that process multiple part lengths on the same line.
Machine Changeover
Quickly reposition the retract end-stop during product family changeovers without disassembling the cylinder mount or adding shims.
Adjustable Diverting
Set precise sorting gate positions for varying package sizes, using the 50 mm adjustment window to adapt the diverting stroke at commissioning.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-50 the Right Cylinder?
Choose this 50 mm bore model when your application requires 982 N of push force at 0.5 MPa, offering a step up in thrust from the 40 mm bore (628 N) without the size penalty of the 63 mm bore (1559 N). The 50 mm adjustment range is particularly valuable during machine setup or product changeovers, allowing you to dial in the exact end position without physically swapping the cylinder or adding external stops. Remember that the rear adjuster acts only as a travel stop; it will not hold a load without continuous air pressure, so for dead-end load holding you should consider an SAIL or BSAI locking cylinder.
When replacing an ISO 15552 actuator, match the 50 mm bore, 240 mm nominal stroke, 50 mm adjustment code, PT port threads, and your required mounting accessories from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the total stroke is 240 mm, the 16 mm rod and M12x1.25 thread provide good rigidity, but any application approaching the 30-800 mm/s speed limit with an unsupported load will still require an external guide to prevent side-loading damage.
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 SAIJ50AX240-50 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The external rear adjuster screw acts as a mechanical stop, allowing you to shorten the 240 mm nominal stroke by up to 50 mm, resulting in a usable 190 to 240 mm travel window. It only sets the end position and does not lock the load without live air pressure.
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