Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S
The AirTAC SAIJ125X95-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 20 to 95 mm for precise end-position tuning. Built with a carbon steel rod and a PT tapered port thread, it delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa. The integrated -S magnet enables direct position sensing with AirTAC CMSE reed or DMSE electronic solid-state switches along the dual sensor grooves.
Because the rear stopper can trim up to 75 mm of the nominal stroke, this cylinder excels in applications demanding frequent product-size changeovers without swapping the physical actuator. It supports a speed range of 30-500 mm/s and features adjustable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 95 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 SAIJ125X95-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×95 | 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 SAIJ125X95-75S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 20 and 95 mm during machine commissioning to accommodate multiple product sizes without adding external stopper blocks.
Rapid Line Changeover
Quickly reconfigure the stroke window on packaging or handling lines by turning the rear adjuster, reducing downtime when switching between different material formats.
Heavy-Duty Forming Stops
Leverage the 6136 N push force at 0.5 MPa to securely halt heavy workpieces, using the adjustable stop to fine-tune the pressing depth on the fly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X95-75S the Right Cylinder?
Select this 125 mm bore actuator when substantial thrust is required alongside highly variable travel limits, stepping up from a 100 mm bore that provides 3927 N push at 0.5 MPa. The rear adjuster acts purely as a mechanical stop to set the retract position; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. To match this ISO 15552 dimensionally interchangeable cylinder, specify the 125 mm bore, 95 mm stroke, 75 mm adjustment, PT port thread, and the -S magnet option.
Although the 95 mm nominal stroke is relatively short, the 32 mm rod diameter and M27x2 rod thread provide robust resistance to side loads. For any application approaching or exceeding 300 mm of travel, always utilize an external guide to prevent rod binding, though this specific short-stroke adjustable model handles localized stops with high rigidity.
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 SAIJ125X95-75S FAQ
The rear mechanical stopper allows you to shorten the effective travel from the nominal 95 mm down to 20 mm, creating a 20-95 mm adjustable window. It functions as a travel stop and does not lock the load without continuous air pressure.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
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