Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75
The AirTAC SAIJ125X290-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 290 mm stroke that can be dialed back by up to 75 mm, creating a 215-290 mm usable travel window for precise end-position tuning during commissioning. At 0.5 MPa it delivers 6136 N of push force and 5734 N of pull force, making it suited for heavy-duty positioning tasks.
This variant uses a SUS420J2 stainless steel rod for enhanced corrosion resistance compared to standard carbon steel. It features PT tapered ports sized G1/2, and its extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts strictly as a mechanical stop to set the travel end, meaning it will not hold a load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 290 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 SAIJ125AX290-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×290 | 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 SAIJ125AX290-75 Is Used
Product Changeover
Dial in the 215-290 mm travel window instantly when switching line formats, avoiding physical hardware swaps.
Heavy Positioning
Leverage 6136 N of thrust at 0.5 MPa to move substantial jigs into exact alignment before clamping.
Machine Setup
Fine-tune the retract end-stop during initial commissioning to prevent mechanical crashes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75 the Right Cylinder?
Choose this 125 mm bore when your application requires over 6000 N of thrust at 0.5 MPa; if you need less force, stepping down to a 100 mm bore yields 3927 N. The adjustable stroke is ideal for machine changeovers where product sizes vary, allowing you to fine-tune the retract position without swapping cylinders or adding external stops. For load-holding without continuous air pressure, this plain cylinder is insufficient—consider an AirTAC SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 290 mm stroke, 75 mm adjustment, G1/2 PT ports, and the required mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because the 290 mm stroke is long, always use an external guide to prevent rod side-load damage.
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 SAIJ125AX290-75 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 up to 11045 N push at 0.9 MPa.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 290 mm nominal stroke by up to 75 mm, resulting in a 215-290 mm usable travel window. It only sets the end position and does not lock the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX290-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.