Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-75S 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 SAIJ125X130-75S
The AirTAC SAIJ125X130-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5MPa and features a 125mm bore with a nominal 130mm stroke. The integrated -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors housed in the dual-side barrel grooves.
With a 75mm adjustment range, this SKU provides a usable travel window of 55-130mm, allowing operators to dial in the exact retract end-position during commissioning without adding external stops. The carbon steel piston rod features an M27x2 thread, and the cylinder operates at 30-500mm/s. It includes adjustable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-75S |
|---|---|
| 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 SAIJ125X130-75S
| 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 SAIJ125X130-75S Is Used
Product Changeovers
Quickly reconfigure the 55-130mm stroke window on packaging lines when switching between different container sizes without swapping the cylinder.
Machine Setup Calibration
Fine-tune the retract end-position during initial commissioning to achieve exact clamping or positioning of heavy workpieces using the 6136N thrust.
Variable End-Stop Forming
Accommodate multiple material depths in pressing or forming stations by dialing the rear adjuster screw to shorten the effective stroke on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-75S the Right Cylinder?
Select this 125mm bore cylinder when an application requires substantial thrust—such as 6136N push or 5734N pull at 0.5MPa—but demands variable retract distances. The 75mm adjuster is ideal for product-size changeovers on a line, offering a 55-130mm travel window. If your setup requires less force, stepping down to a 100mm bore yields 3927N push force; if more is needed, a 160mm bore provides 10053N.
For a direct ISO 15552 interchangeable replacement, match the 125mm bore, 130mm nominal stroke, PT tapered port thread, and the -S magnet requirement. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the nominal stroke is 130mm, side-load is minimal, but always ensure the M27x2 rod thread is aligned with the load guide. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series.
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 SAIJ125X130-75S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 1251kgf.
The rear adjuster screw allows you to trim the effective stroke by up to 75mm from the nominal 130mm, creating a usable travel window of 55-130mm. It functions as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
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