Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10 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 SAIJ125X115-10
The AirTAC SAIJ125X115-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers robust thrust, providing 6136N push force and 5734N pull force at 0.5 MPa. By integrating an external adjusting screw at the rear, this cylinder allows you to fine-tune the effective travel down from the 115mm nominal stroke, creating a precise 105-115mm usable window without swapping out the unit.
This adjuster functions strictly as a mechanical stop to set the retract end position and works alongside the standard variable air cushions, but it does not lock the load without live air pressure. The extruded aluminum barrel features sensor grooves on both sides, and while this specific configuration omits the magnet, adding an -S option enables compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10 |
|---|---|
| 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 SAIJ125X115-10
| 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 SAIJ125X115-10 Is Used
Product Changeover
Dial in the 105-115mm travel window during packaging line format changes to accommodate varying carton depths without repositioning cylinder mounts.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to perfectly align heavy 125mm bore pressing operations, avoiding costly external mechanical stops.
Variable End Stops
Adjust the rear mechanical stop on the fly for automated assembly stations that require slight positional shifts between different product runs.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X115-10 the Right Cylinder?
Selecting this 125mm bore model is ideal when your application requires the 6136N thrust at 0.5 MPa, stepping up from a 100mm bore that yields 3927N, or scaling down from a 160mm bore that offers 10053N. The adjustable stroke is specifically chosen for applications needing commissioning fine-tuning or variable end-stops during product changeovers, avoiding the rigid constraints of a fixed-stroke SAI cylinder. Because the rear screw is a travel stop and not a locking mechanism, loads cannot be held without continuous air pressure; for true load-holding, consider the SAIL or BSAI series, or utilize an external pilot-operated check valve.
To match this exact configuration for an ISO 15552 replacement, verify the 125mm bore, 115mm stroke, 10mm adjustment range, PT tapered port threads, and carbon steel rod material. The approved mounting set for the SAIJ series includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Operating speed for this bore size ranges from 30-500 mm/s.
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 SAIJ125X115-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can achieve up to 11045N push force at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the 115mm nominal stroke by up to 10mm, providing an effective travel window of 105-115mm. It sets the end position but does not lock the load without live air pressure.
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