Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S
The AirTAC SAIJ125X75-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 65 to 75 mm for precise end-position tuning. It delivers substantial thrust, generating 6136 N of push force and 5734 N of pull force at 0.5 MPa. The integrated -S magnet enables position feedback through AirTAC CMSE reed and DMSE electronic sensors.
This adjustable-stroke model utilizes a carbon steel rod with an M27x2 thread and PT tapered ports. Unlike fixed-stroke SAI cylinders, the rear stopper screw allows you to trim the effective stroke by up to 10 mm during commissioning without adding external stops. It is a profile cylinder with sensor grooves on both sides, supporting a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAIJ125X75-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAIJ125X75-10S Is Used
Precision Pressing
Dial in the exact 65 to 75 mm pressing depth during machine setup to prevent over-travel on delicate workpieces.
Product Changeover
Quickly adjust the end-stop by up to 10 mm to accommodate varying product heights on the same assembly line.
Heavy End-Positioning
Leverage the 6136 N push force to move heavy pallets while fine-tuning the final resting position at commissioning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X75-10S the Right Cylinder?
Selecting this 125 mm bore cylinder is ideal when an application requires heavy thrust within a short 65 to 75 mm travel window. If you need less force, stepping down to a 100 mm bore yields 3927 N push force at 0.5 MPa, whereas moving up to a 160 mm bore provides 10053 N. The adjustable end-stop is perfect for product-size changeovers, though the rear adjuster functions strictly as a travel stop and does not hold the load without live air; for true load-holding, consider an external rod lock or the SAIL series.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard footprint requirements with its 125 mm bore, 75 mm nominal stroke, 10 mm adjustment, PT ports, and -S magnet. The robust 32 mm carbon steel rod handles high side loads well, but because the stroke is relatively short, external guiding is typically unnecessary. Operating speed ranges from 30 to 500 mm/s, supported by 40 mm variable air cushions at both ends.
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 SAIJ125X75-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can reach a maximum push force of 11045 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the 75 mm nominal stroke by up to 10 mm, creating a 65 to 75 mm usable travel window. This stopper sets the travel end but does not lock the load without continuous air pressure.
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