Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S
The AirTAC SAIJ125X115-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 105-115 mm usable travel window, allowing you to dial back the nominal 115 mm stroke by up to 10 mm during commissioning. Equipped with a magnet for position sensing, it delivers 6136 N of push force at 0.5 MPa.
This 125 mm bore unit uses a PT tapered G1/2 port and a robust 32 mm carbon steel rod with an M27x2 thread. Unlike fixed-stroke SAI models, this variant omits FB, CA, CB, and CR mounts, offering a streamlined set of ISO 15552 mounting interfaces (Basic, FA, LB, TC, FTC, TCM1, TCM2). The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 115 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 SAIJ125X115-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×115 | 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 SAIJ125X115-10S Is Used
Precision End-Stop Tuning
Dial in the exact 105 to 115 mm end position during machine setup to accommodate varying workpiece lengths without physically swapping the cylinder.
Product Line Changeover
Quickly adjust the retract stop by up to 10 mm when switching production runs, saving downtime on packaging lines that handle multiple carton sizes.
Heavy Assembly Pressing
Leverage the 6136 N push force at 0.5 MPa to seat heavy components, using the rear screw to limit travel and prevent over-travel during final assembly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10S the Right Cylinder?
Choose this 125 bore when 8590 N of thrust at 0.7 MPa is required for moving heavy fixtures; step down to an 80 mm bore (providing 3518 N at 0.7 MPa) if your load is lighter. The 10 mm rear stopper is ideal for product-size changeovers, letting you fine-tune the end position without adding external physical stops.
Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider an SAIL or BSAI cylinder. Because the 115 mm stroke is relatively short, side-load stress is minimal, but always ensure the M27x2 rod thread is properly aligned to prevent 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 SAIJ125X115-10S FAQ
The rear adjuster screw lets you shorten the effective travel from 115 mm down to 105 mm. It acts as a mechanical stop to fine-tune the retract position without replacing the cylinder.
It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa. At the maximum operating pressure of 1.0 MPa, it can deliver up to 1251 kgf of thrust.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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