Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-100S 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 SAIJ125AX130-100S
The AirTAC SAIJ125X130-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 130 mm travel by up to 100 mm. This creates a highly versatile 30-130 mm usable window, perfect for dialing in exact end positions during commissioning without swapping hardware or adding external stops. It delivers 6136 N of push force at 0.5 MPa, scaling to 11045 N at 0.9 MPa.
This specific configuration features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state electronic switches. The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-100S |
|---|---|
| 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 SAIJ125AX130-100S
| 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 SAIJ125AX130-100S Is Used
Machine Setup & Commissioning
Fine-tune the exact end-of-stroke position during initial machine commissioning, shifting the stop anywhere from 30 to 130 mm without machining new hard stops.
Product-Size Changeovers
Rapidly adapt a packaging or handling line to different product lengths by dialing the rear adjuster back up to 100 mm during format changeovers.
Variable End-Stop Positioning
Provide a mechanical travel limit for processes requiring a flexible end position, relying on the G1/2 port and 30-500 mm/s speed range for controlled actuation.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX130-100S the Right Cylinder?
Choose this 125 mm bore when an 80 mm bore falls short—delivering 6136 N versus the 80 mm bore's 2513 N at 0.5 MPa. The massive 100 mm adjustment range is ideal for product-size changeovers on a line, letting you shift the end-stop across a wide 30-130 mm window. If you need to step up further, the 160 mm bore provides 10053 N at 0.5 MPa. For load-holding without live air pressure, this cylinder is insufficient; the rear adjuster is a stop, not a lock, so you would need an external rod lock, a pilot-operated check valve, or the related BSAI clamp-lock cylinder.
To match this exact unit for an ISO 15552 interchangeable replacement, specify: 125 mm bore, 130 mm stroke, 100 mm adjustment range, PT tapered port threads, SUS420J2 (A) rod material, and the -S magnet option. Mounting is limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the total travel can extend to 130 mm, ensure external guiding is used if side loads are present.
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 SAIJ125AX130-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 130 mm nominal stroke by up to 100 mm, creating a usable travel window of 30 to 130 mm. It sets the end position but does not lock the load without continuous air pressure.
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