Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S
The AirTAC SAIJ125X190-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. This yields a highly flexible usable travel window of 90 to 190 mm, letting you dial in exact end positions during commissioning without adding external stops. It delivers a substantial 6136 N push force and 5734 N pull force at 0.5 MPa, making it suited for heavy-duty handling.
This unit includes a magnetic piston for position sensing with CMSE reed and DMSE electronic switches. It uses a G1/2 PT tapered port and a robust 32 mm carbon steel rod with an M27x2 thread. The extruded aluminum barrel incorporates sensor grooves on both sides, and the mounting set omits FB, CA, CB, and CR brackets, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 190 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 SAIJ125X190-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×190 | 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 SAIJ125X190-100S Is Used
Variable End-Stop Forming
Dial in the 90-190 mm travel window on the fly to accommodate different material lengths in pressing and forming lines without swapping hardware.
Product Changeover
Rapidly reconfigure the rear stopper during packaging line format changes, leveraging the 6136 N thrust to move heavy pallets precisely.
Commissioning Fine-Tune
Trim the stroke by up to 100 mm during machine setup to perfect the end-of-travel position and prevent overtravel damage without external shims.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100S the Right Cylinder?
Choose this 125 mm bore when 80 mm falls short—its 2513 N push at 0.5 MPa is less than half the force of this SAIJ125 model. An adjustable stroke is selected over a fixed SAI when a machine requires frequent product-size changeovers or precise variable end-stops. The rear screw acts purely as a travel stop and deceleration aid; it does not hold the load without live air. For dead-pilot load holding, use an external rod lock or select the SAIL or BSAI series.
For ISO 15552 replacement matching, verify the 125 mm bore, 190 mm nominal stroke, 100 mm adjustment range, PT G1/2 ports, and the -S magnet. Because the stroke is under 300 mm, side-load stress is manageable, but the 32 mm rod and M27x2 thread provide high rigidity for offset loads.
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 SAIJ125X190-100S 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 deliver up to 1251 kgf at its maximum 1.0 MPa pressure.
The rear adjuster screw lets you shorten the 190 mm nominal stroke by up to 100 mm, creating a usable travel window of 90 to 190 mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
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