Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100
The AirTAC SAIJ125X475-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a generous 6136N pull force at 0.5 MPa and allows you to dial back the 475mm nominal travel by up to 100mm, creating a precise 375-475mm usable window for product changeovers.
This unit is built with a SUS420J2 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning electronic DMSE or reed CMSE switches cannot be used without modification.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 475 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 SAIJ125AX475-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×475 | 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 SAIJ125AX475-100 Is Used
Machine Changeover
Dial in the 375-475mm travel window during product size changes to set new end positions rapidly without changing the cylinder.
Variable End Stops
Use the 100mm rear adjuster to fine-tune the retract position precisely during commissioning of heavy-duty assembly lines.
Heavy Load Positioning
Leverage the 6136N pull force to move substantial fixtures while relying on the external stop to set the exact resting point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100 the Right Cylinder?
Select this 125mm bore when an 80mm bore is insufficient, as the smaller version only yields 2268N of pull force at 0.5 MPa compared to the 6136N offered here. The 100mm adjustment range is perfect for applications requiring frequent machine setup or variable end stops without swapping out the entire actuator. Because the nominal stroke is 475mm, an external guide is recommended to prevent excessive side-loading on the rod.
For an exact ISO 15552 replacement, match the 125mm bore, 475mm stroke, 100mm adjustment, PT port thread, and mounting style. Note that the rear screw acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125AX475-100 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 6136N of push force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw allows you to shorten the effective travel by up to 100mm. This transforms the fixed 475mm stroke into a 375-475mm adjustable window, enabling fine-tuning of the end position without external stops.
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 SAIJ125AX475-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.