Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30S 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 SAIJ50AX240-30S
The AirTAC SAIJ50X240-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 240 mm stroke that can be fine-tuned backward by up to 30 mm, yielding a usable travel window of 210-240 mm. Delivering 982 N of push force at 0.5 MPa, it integrates seamlessly into standard setups using PT tapered ports.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel houses sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30S |
|---|---|
| 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 SAIJ50AX240-30S
| 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 SAIJ50AX240-30S Is Used
Product Changeover
Dial in the 210-240 mm travel window during format size changes on a packaging line without swapping out the entire actuator.
Machine Setup
Fine-tune the retract end-position at commissioning to perfect tooling alignment, using the rear stopper instead of adding shims.
Variable End Stops
Adjust the effective stroke dynamically on automated test fixtures where the contact point varies by component height.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX240-30S the Right Cylinder?
Select this 50 mm bore when an application demands 982 N push force at 0.5 MPa but requires precise end-position tuning during commissioning without external stops. If your setup needs less force, stepping down to a 40 mm bore yields 628 N; stepping up to a 63 mm bore provides 1559 N. The rear adjuster acts purely as a travel stop for deceleration, not a lock, so load-holding without live air requires a SAIL or BSAI cylinder.
Because the 240 mm stroke exceeds 300 mm? No, but at 240 mm you should still verify guide support. To match this exact ISO 15552 replacement, specify: 50 mm bore, 240 mm stroke, 30 mm adjustment, PT ports, SUS420J2 rod, and the -S magnet.
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 SAIJ50AX240-30S 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 the nominal 240 mm down to 210 mm, creating a 210-240 mm usable window. This stopper only sets the end position and does not lock the load without live air pressure.
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