Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30
The AirTAC SAIJ125X225-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 195 to 225 mm. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads. The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SAIJ125AX225-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SAIJ125AX225-30 Is Used
Product Changeover
Dial in the 195-225 mm travel window during format size changes on a packaging line without swapping the cylinder.
Heavy-Duty Positioning
Leverage 6136 N of thrust at 0.5 MPa to move heavy pallets while fine-tuning the exact stopping point.
Machine Setup
Set precise retract endpoints during initial commissioning using the rear mechanical stopper instead of external shims.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-30 the Right Cylinder?
Select this 125 mm bore cylinder when an application requires precise end-position tuning during commissioning without the need to swap out physical components. If you need less force, stepping down to a 100 mm bore yields 3927 N of push force at 0.5 MPa; stepping up to a 160 mm bore provides 10053 N. Because the 225 mm stroke is below the 300 mm side-load threshold, the robust 32 mm rod handles standard loads well, though external guides remain recommended for lateral forces.
Choose the adjustable SAIJ format over a fixed-stroke SAI when a machine handles varying product sizes that require on-the-fly stopper adjustments. To replace an ISO 15552 cylinder, match the 125 mm bore, 225 mm stroke, 30 mm adjustment range, PT G1/2 port, and preferred mounting style. Note that this unit lacks a magnet, so position sensing requires adding an external -S variant to work with CMSE or DMSE switches.
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 SAIJ125AX225-30 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can output up to 1251 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm, creating a usable travel window of 195 to 225 mm. This mechanical stopper only sets the end position and does not lock or hold the load without continuous 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 SAIJ125AX225-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.