Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100
The AirTAC SAIJ125X325-100 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks requiring exact end-position tuning. Featuring a 125mm bore and a 325mm nominal stroke, its integrated rear adjusting screw provides a 100mm trim range. This creates a versatile 225-325mm usable travel window, enabling precise retraction stops during commissioning without the need for external mechanical stops.
Built to handle substantial loads, it generates 6136N of pull force at 0.5MPa and safely operates within a 30-500mm/s speed bracket. This variant features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and utilizes PT tapered port threads. It includes standard variable air cushions at both ends to manage deceleration, though operators should note the rear adjuster acts purely as a travel stop and will not hold the load without continuous air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 325 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 SAIJ125AX325-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×325 | 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 SAIJ125AX325-100 Is Used
Heavy Press Tuning
Dial in the exact retraction point of a 125mm bore press during initial commissioning, using the 100mm adjustment window to perfect the crush distance without swapping tooling.
Product Changeover Stops
Adapt automated conveyor end-stops for varying package sizes on the fly, trimming the effective travel down from 325mm to 225mm to accommodate shorter products instantly.
Large Fixture Positioning
Securely position heavy industrial fixtures using the 6136N pull force, relying on the external rear screw to set precise retraction limits for multi-stage assembly processes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX325-100 the Right Cylinder?
Select this 125mm bore cylinder when an application demands high thrust combined with flexible positioning, such as product changeovers on a large conveyor line. If a smaller force class is acceptable, stepping down to a 100mm bore yields 3681N of pull at 0.5MPa. Conversely, if your setup requires even greater power, upgrading to a 160mm bore provides 9425N of pull at 0.5MPa. Choose this adjustable SAIJ model over a fixed-stroke SAI when you need on-the-fly end-stop tuning rather than a locked travel length.
As an ISO 15552 dimensionally interchangeable cylinder, this unit matches standard mounting footprints using the Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessory set, deliberately omitting FB, CA, CB, and CR options. It uses PT ports, lacks a piston magnet for sensors, and carries a 325mm stroke. Because this stroke exceeds 300mm, the 32mm diameter rod is susceptible to deflection under lateral stress; always pair this unit with an external guide rail to prevent side-load damage. For applications requiring true load-holding without live air, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ125AX325-100 FAQ
At a 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force. At the maximum 1.0MPa pressure, it can deliver up to 1251kgf.
The rear adjusting screw acts as a mechanical stop that trims the effective travel. For this 325mm nominal stroke model, you can continuously reduce the retraction distance anywhere in the 225-325mm range. This stop only sets the end position and does not lock the load without air pressure.
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 SAIJ125AX325-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.