Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S
The AirTAC SAIJ125X110-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136 N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod and a built-in magnet for position sensing. The rear adjustment screw allows you to trim the nominal 110 mm travel back by up to 75 mm, creating a highly versatile 35-110 mm usable stroke window for precise end-position tuning during commissioning.
This adjustable range is ideal for product-size changeovers on a line, letting you fine-tune the retract stop without swapping the cylinder or adding external stops. The adjuster acts purely as a mechanical stop and works alongside the variable air cushion at both ends to decelerate the load; it does not hold the load without live air. For position holding without pneumatic pressure, consider a SAIL or BSAI series cylinder instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125AX110-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125AX110-75S Is Used
Product Size Changeovers
Dial in the exact end-stop for different product lengths on the same line, utilizing the 35-110 mm adjustable travel window without changing the cylinder.
Heavy Press Tuning
Fine-tune the retract position of a 6136 N pressing operation at machine commissioning, using the rear stopper to set precise material contact depth.
Sensor-Driven Positioning
Leverage the built-in magnet with DMSE solid-state sensors to track the adjusted travel end, ensuring repeatable signaling across the variable stroke window.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-75S the Right Cylinder?
Choose this 125 mm bore model when your application requires heavy thrust (6136 N at 0.5 MPa) alongside highly variable end-stops. If your force requirements are lower, stepping down to a 100 mm bore provides 3927 N of push force at 0.5 MPa, which might save space and air consumption. The wide 75 mm adjustment window on this specific SKU is particularly useful for machines processing multiple product sizes, whereas a fixed-stroke SAI cylinder is better suited for dedicated, single-size tasks.
When ordering a replacement, verify the 110 mm nominal stroke, the 75 mm adjustment code, the PT tapered port thread, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Although the 32 mm rod and M27x2 thread handle substantial side loads, any stroke over 300 mm requires an external guide to prevent rod 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 SAIJ125AX110-75S 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 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the 110 mm nominal stroke by up to 75 mm, creating a usable travel window of 35 to 110 mm. The adjuster acts as a mechanical stop to set the end position and does not function as a lock to hold the load without live air pressure.
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