Airtac SAIJ50 Adjustable Cylinder SAIJ50AX50-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX50-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 50mm 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
- Stroke50 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 SAIJ50AX50-30
The AirTAC SAIJ50X50-30 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 50mm bore and a 50mm nominal stroke that can be dialed back by up to 30mm, providing a usable travel window of 20-50mm for precise end-position tuning. At 0.5 MPa it delivers 982N of push force and 825N of pull force, making it well-suited for moderate-duty positioning tasks.
This variant features an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if a magnet is added later. It uses a PT tapered port thread and relies on variable air cushions at both ends to decelerate the piston.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX50-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX50-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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 SAIJ50AX50-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×50 | 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 SAIJ50AX50-30 Is Used
Machine Setup Changeover
Dial in the exact 20-50mm stroke end-stop during machine setup or product size changeovers without replacing the entire cylinder.
End-Position Tuning
Fine-tune the retract end position on the fly to compensate for mechanical wear or sensor drift in automated assembly lines.
Variable End Stops
Adjust the effective travel window on packaging equipment where multiple product formats require different stroke lengths.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX50-30 the Right Cylinder?
Choose this 50mm bore adjustable-stroke cylinder when your application requires exact end-position tuning at commissioning or during product changeover without swapping the physical cylinder or adding external stops. If your force requirements are lower, stepping down to a 40mm bore yields 628N of push force at 0.5 MPa; if you need significantly more power, stepping up to a 63mm bore provides 1559N. The 20mm M16x1.5 rod thread handles side loads well, though any long unsupported travel still requires an external guide.
When specifying a replacement, ensure you match the 50mm bore, 50mm stroke, 30mm adjustment range, PT port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series 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 SAIJ50AX50-30 FAQ
At 0.5 MPa operating pressure, the SAIJ50X50-30 provides 982N of push force and 825N of pull force. At 0.7 MPa, the push force increases to 1374N.
The rear adjuster allows you to shorten the 50mm nominal stroke by up to 30mm, creating a usable travel window of 20-50mm. It acts as a mechanical stop to set the end position, but it does not lock or hold the load without continuous air pressure.
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