Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S
The AirTAC SAIJ125X150-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136 N of push force at 0.5 MPa. Its 150 mm nominal stroke can be dialed back by up to 75 mm, creating a highly flexible 75-150 mm usable travel window for precise end-position tuning during commissioning. This wide adjustment band is perfect for machinery requiring frequent product-size changeovers without swapping hardware.
Built with a SUS420J2 stainless steel rod (material code A) and PT tapered ports, this unit integrates seamlessly into existing setups. The extruded aluminum barrel features sensor grooves on both sides, and the included magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches for exact position feedback. It utilizes a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAIJ125AX150-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAIJ125AX150-75S Is Used
Product Size Changeovers
Leverage the 75 mm adjustment window to rapidly reconfigure end-stops on packaging lines handling varying carton or pallet sizes without changing the cylinder.
Machine Setup Tuning
Dial in the exact 75-150 mm retract position during commissioning to perfect tooling alignment, eliminating the need for machined spacer shims.
Heavy Forming Presses
Utilize the 6136 N push force at 0.5 MPa for high-thrust forming or clamping tasks where the final bottoming position must be micro-adjusted per batch.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX150-75S the Right Cylinder?
Select this 125 mm bore when an 80 mm bore (2513 N push at 0.5 MPa) lacks the necessary thrust, but a 160 mm bore (10053 N) would be excessive. The adjustable 75-150 mm travel window allows you to fine-tune the retract end-stop on the fly, avoiding the need to bolt on external stops or order custom-length fixed-stroke SAI cylinders. Because the stroke is 150 mm, standard external guiding is recommended if the load is heavy or unbalanced.
For a true ISO 15552 replacement match, verify the 125 mm bore, 150 mm stroke, 75 mm adjustment, PT ports, and the -S magnet. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither will hold a load without live air. For dead-load holding, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ125AX150-75S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 150 mm nominal stroke by up to 75 mm, providing a usable travel window of 75 to 150 mm. It sets the end position but does not lock the load without live 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 SAIJ125AX150-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.