Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S
The AirTAC SAIJ50X30-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing exact end-position tuning without external stops. It delivers a robust 982N push force at 0.5 MPa. With a nominal 30mm stroke and a 20mm adjustment range, it yields a highly versatile 10-30mm usable travel window for short-stroke precision tasks.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance. The integrated magnet (-S) supports position sensing via AirTAC CMSE reed or DMSE electronic switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. Fluid ports are PT threaded, and the cylinder operates efficiently between 30-800 mm/s.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 30 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 SAIJ50AX30-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×30 | 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 SAIJ50AX30-20S Is Used
Short-Stroke Changeover
Ideal for dialing in precise 10-30mm clamping or positioning distances during automated machine setups and product size transitions.
Corrosive Short Ejection
The SUS420J2 stainless steel rod provides reliable resistance for short-stroke ejection or sorting tasks in environments with moisture or mild chemicals.
Adjustable Sensor Triggering
Utilizes the built-in magnet with DMSE electronic sensors to confirm exact end-of-stroke positions across the adjusted travel window.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX30-20S the Right Cylinder?
Select this 50mm bore when an application requires more thrust than the 40mm bore (628N push at 0.5 MPa) but lacks the physical space for a 63mm cylinder (1559N push). The adjustable 10-30mm travel window is ideal for machine setups requiring frequent product-size changeovers, replacing the need to swap fixed-stroke SAI cylinders. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For load-holding requirements without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 50mm bore, 30mm nominal stroke, 20mm adjustment code, PT G1/4 port thread, and the -S magnet. Mounting options are restricted to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50AX30-20S FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. It can reach a maximum push force of 1767N at 0.9 MPa.
The rear adjuster screw allows you to trim the effective stroke by up to 20mm. Since the nominal stroke is 30mm, you can fine-tune the usable travel window anywhere between 10mm and 30mm without adding external stops.
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