Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S
The AirTAC SAIJ125X195-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear-mounted stroke adjuster. It delivers a robust 6136 Newtons of push force and 5734 Newtons of pull force at 0.5 MPa, making it well-suited for heavy-duty actuation. The integrated -S magnet enables precise end-position detection using AirTAC CMSE reed or DMSE solid-state sensors housed in the dual-side extruded barrel grooves.
This specific SKU features a 75 mm adjustment range, allowing you to dial back the 195 mm nominal stroke to any effective travel length down to 120 mm. This built-in adjustability lets you fine-tune end positions during commissioning or product changeovers without physically swapping the cylinder or adding external stops. It features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads sized at G1/2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 195 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 SAIJ125AX195-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×195 | 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 SAIJ125AX195-75S Is Used
Variable End-Stop Tuning
Dial in the exact 120 to 195 mm travel distance during machine setup to accommodate new product dimensions without disassembling the actuator assembly.
Product Changeover Systems
Rapidly adjust the retract end-position on packaging lines handling varying box sizes, leveraging the 75 mm stroke trim to avoid fitting external mechanical stops.
Heavy-Duty Positioning
Utilize the 6136 Newtons of thrust at 0.5 MPa to move heavy pallets or fixtures, relying on the SUS420J2 stainless rod for durability in demanding environments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-75S the Right Cylinder?
Select this 125 mm bore cylinder when your application requires high thrust along with flexible end-stop tuning. If your process needs less force, stepping down to a 100 mm bore drops the 0.5 MPa push force to 3927 Newtons, whereas moving up to a 160 mm bore increases it to 10053 Newtons. The 75 mm adjustment window is ideal for packaging lines or fixtures that frequently handle varying product sizes, replacing the need for fixed-stroke SAI units when exact travel distances fluctuate.
When matching this for an ISO 15552 replacement, verify the 195 mm stroke, 75 mm adjustment, G1/2 PT port, and the -S magnet requirement. The mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the rear adjuster acts purely as a mechanical travel stop and does not hold the load without continuous air pressure; for true pneumatic locking, consider the SAIL or BSAI series. Furthermore, the 32 mm rod and M27x2 thread provide excellent rigidity, but even with this robust rod, any long unsupported stroke exceeding 300 mm necessitates an external guide to prevent side-loading damage.
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 SAIJ125AX195-75S FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 Newtons of push force and 5734 Newtons of pull force. If operated at 0.7 MPa, the push force increases to 8590 Newtons.
The rear adjuster screw allows you to shorten the 195 mm nominal stroke by up to 75 mm, providing an effective travel window of 120 to 195 mm. This stopper only regulates the end-of-travel position and does not lock the load without live air pressure.
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