Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75 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 SAIJ125AX190-75
The AirTAC SAIJ125X190-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a generous 6136N of thrust at 0.5 MPa and allows you to dial back the 190mm nominal stroke by up to 75mm, creating a flexible 115-190mm usable travel window for precise commissioning. The rod is constructed from SUS420J2 stainless steel (code A), offering enhanced resistance to corrosion compared to standard carbon steel.
This model utilizes PT tapered port threads and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts strictly as a travel stop to fine-tune the end position during machine setup or product changeover; it does not hold the load without live air pressure. For position-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75 |
|---|---|
| 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 SAIJ125AX190-75
| 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 SAIJ125AX190-75 Is Used
Variable End-Stop Tuning
Dial in the exact 115-190mm end position during machine commissioning to accommodate multi-format production runs without adding external mechanical stops.
Product Size Changeover
Quickly adjust the retract distance on packaging lines when switching between different package dimensions, leveraging the 75mm trim range to save setup time.
Heavy-Duty Positioning
Move heavy jigs or fixtures with 6136N of thrust at 0.5 MPa while using the rear screw to fine-tune the resting position for precise alignment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75 the Right Cylinder?
Selecting this 125mm bore cylinder makes sense when your application requires substantial force—stepping down to a 100mm bore yields 3927N at 0.5 MPa, whereas this SAIJ125X190-75 delivers 6136N. The 75mm adjustment range is ideal for machinery that processes varying product sizes, allowing you to reposition the end-of-stroke limit on the fly without machining external stopper blocks or swapping out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 125mm bore, 190mm stroke, PT port threads, and the desired mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Note that this specific SKU is configured without a magnet (-S omitted), so it cannot host CMSE reed or DMSE electronic sensors without a configuration change.
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 SAIJ125AX190-75 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf.
The rear adjuster screw lets you shorten the 190mm nominal stroke by up to 75mm, creating a 115-190mm usable travel window. It functions as a mechanical stop for end-position tuning and is not a lock, meaning live air pressure is still required to hold the load.
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