Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10
The AirTAC SAIJ125X280-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. By turning the external stopper screw, you can trim the effective travel within a 270-280mm window. This allows precise end-position tuning at commissioning without adding external stops or swapping the unit.
It features a 32mm carbon steel rod with an M27x2 thread, providing robust resistance against side loads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting options span Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock; for load-holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 280 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 SAIJ125X280-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×280 | 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 SAIJ125X280-10 Is Used
Machine Changeover
Dial in the 270-280mm travel window during product size changes without swapping cylinders or repositioning external stops.
End-Stop Tuning
Fine-tune the retract position at commissioning to hit exact datum points on large fixtures requiring over 6000N of force.
Assembly Line Indexing
Provides adjustable end positions for large part placement tasks where minor variations in component height require on-site adjustment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X280-10 the Right Cylinder?
Choose this 125mm bore when an application requires over 6000N of force but needs slight end-position flexibility, stepping up from a 100mm bore that provides 3927N. The 10mm adjustment is ideal for product changeovers on a line, letting operators dial in the exact retract distance without replacing the cylinder. To match this ISO 15552 interchangeable unit, specify the 125mm bore, 280mm stroke, 10mm adjustment, PT tapered port threads, and the required mounting style. Since the 280mm stroke is below the 1500mm maximum, it remains a standard configuration, though external guiding is recommended for long unsupported 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 SAIJ125X280-10 FAQ
At 0.5 MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can deliver up to 11045N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 280mm nominal stroke by up to 10mm. This creates a 270-280mm usable travel window for fine-tuning the end position without replacing the cylinder.
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 SAIJ125X280-10
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.