Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S
The AirTAC SAIJ125X105-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 95 to 105 mm. Delivering 6136 N of push force and 5734 N of pull force at 0.5 MPa, it handles heavy positioning tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides, and this -S configuration includes a magnet for CMSE reed and DMSE electronic solid-state switches.
This model utilizes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and pairs with PT tapered port threads. The rear adjustment screw acts purely as a mechanical stop to trim the retract end position during commissioning; it does not lock or hold the load without continuous live air pressure. For load-holding requirements, an external SAIL pneumatic lock or BSAI clamp-lock cylinder is required.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 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 SAIJ125AX105-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAIJ125AX105-10S Is Used
Variable End-Stop Tuning
Dial in the exact 95 to 105 mm retract position during machine commissioning to accommodate varying product thicknesses without replacing the entire cylinder.
Heavy Press Positioning
Leverage 6136 N of push force at 0.5 MPa to securely position heavy materials, using the rear adjuster to fine-tune the final pressing depth.
Product Size Changeover
Quickly adapt automated line tooling for different product sizes by adjusting the stroke end position in minutes rather than re-engineering fixed stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-10S the Right Cylinder?
Selecting this 125 mm bore adjustable cylinder is ideal when an application requires 6136 N of thrust at 0.5 MPa but demands fine end-position tuning during machine setup or product changeover without physically swapping the cylinder. If your thrust requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa, whereas moving up to a 160 mm bore provides 10053 N. The adjustable stroke mechanism allows you to dial in the exact 95 to 105 mm travel window on-site, avoiding the need to add external stops.
When specifying an ISO 15552 replacement match, ensure you carry over the 125 mm bore, 105 mm stroke, 10 mm adjustment range, PT port thread, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Because the 32 mm diameter rod and M27x2 rod thread carry high side-load capacity, long unsupported strokes still require an external guide.
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 SAIJ125AX105-10S FAQ
The rear adjustment screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 10 mm, providing a usable travel window of 95 to 105 mm. It only sets the travel end and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. The maximum thrust is 1251 kgf at 1.0 MPa.
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