Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S
The AirTAC SAIJ125X130-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 130 mm travel to a precise usable window of 100-130 mm without adding external stops. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks with ease. The included magnet works seamlessly with CMSE reed and DMSE electronic sensors for exact end-of-travel verification.
This specific SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads. It operates at speeds of 30-500 mm/s and includes adjustable air cushions at both ends to manage kinetic energy. The rear adjustment screw acts purely as a travel stop to fine-tune the retract position during commissioning, not as a load-holding brake.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX130-30S Is Used
Product Changeover
Quickly reposition the retract end-stop by up to 30 mm when switching between product sizes on a packaging line, saving downtime on physical cylinder swaps.
Heavy Pressing Operations
Utilizes the 6136 N push force at 0.5 MPa to securely seat or press heavy components, with the rear screw allowing fine-tuning of the final contact position.
Sensor-Verified Sorting
Pairs the built-in magnet with DMSE electronic sensors to confirm part ejection at the adjusted end position before the conveyor advances.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-30S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore falls short of the required thrust, stepping up from 3927 N to a robust 6136 N at 0.5 MPa. The adjustable-stroke design is ideal for machinery requiring variable end-stops during product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder for minor position tweaks. For load-holding without live air pressure, you must integrate an external rod lock or select a different series like the SAIL or BSAI, as the SAIJ adjuster cannot hold loads.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 130 mm stroke, 30 mm adjustment range, PT port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the 130 mm stroke is relatively short for this large bore, side-load risks are minimal, but ensure the load is guided to prevent binding.
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 SAIJ125 Adjustable Cylinder SAIJ125AX130-30S FAQ
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke from 130 mm down to as little as 100 mm. This allows precise end-position tuning during machine setup without changing the cylinder.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
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Standard models usually ship in 3-4 days.
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