Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S
The AirTAC SAIJ125X375-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of pull force at 0.5 MPa. With a 375mm nominal stroke and a 10mm adjustment range, it provides a usable travel window of 365-375mm for exact end-position tuning. The extruded aluminum barrel features dual sensor grooves, and the -S magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state switches.
This model uses a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features a PT tapered port thread. The rear adjuster acts solely as a mechanical stop to trim the retract stroke during commissioning; it does not hold the load without live air pressure. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 375 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 SAIJ125AX375-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×375 | 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 SAIJ125AX375-10S Is Used
Variable End-Stop Tuning
Dial in the exact 365-375mm retract position during machine commissioning to accommodate varying product sizes without swapping cylinders.
Changeover Setup
Quickly adjust the stroke end-point on packaging or processing lines during product format changes, minimizing downtime and mechanical rework.
High-Force Positioning
Leverage the 6136N pull force to move heavy jigs or fixtures into precise end positions, using the 10mm adjuster to set the final resting point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX375-10S the Right Cylinder?
Choose this 125mm bore when 8590N of push force at 0.5 MPa is required, or step down to the 100mm bore offering 5497N if the load is lighter. An adjustable stroke is selected over a fixed SAI cylinder when you need to fine-tune the end position during machine setup or product changeover without adding external stops. For load-holding without live air, consider the SAIL or BSAI series, as the SAIJ adjuster is not a lock. Ensure matching ISO 15552 dimensions: 125mm bore, 375mm stroke, 10mm adjust, PT G1/2 port, and -S magnet. Because the 375mm stroke is long, use an external guide to support the rod and prevent 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 SAIJ125AX375-10S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force. At 0.7 MPa, the push force increases to 14074N.
The rear adjuster allows you to shorten the 375mm nominal stroke by up to 10mm, creating a usable travel window of 365-375mm. It acts as a mechanical stop for end-position tuning and does not lock the load without live air.
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 SAIJ125AX375-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.