Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 145mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke145 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S
The AirTAC SAIJ40X145-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628 Newtons of push force at 0.5 MPa and features a 145 mm nominal stroke that can be fine-tuned down by up to 100 mm, yielding a highly versatile 45-145 mm usable travel window. This wide adjustment band is perfect for prototyping or production lines where the exact end position must be dialed in during commissioning without swapping hardware.
Built with a SUS304 stainless steel rod (option B) and PT tapered ports, this model resists corrosion while providing a robust G1/4 connection. The integrated magnet (-S) supports position sensing via AirTAC CMSE reed or DMSE electronic switches fitted into the dual sensor grooves. The rear adjuster acts purely as a mechanical stop to set the travel end, meaning the load is not held without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 145 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×145 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX145-100S Is Used
Machine Changeover
Dial in the 45-145 mm travel window rapidly during product size changes without bolting on external stops or replacing the cylinder.
Prototype Positioning
Fine-tune the exact end-of-stroke position during commissioning to perfect a new process before finalizing the mechanical layout.
Variable End Stops
Adapt clamping or ejection distances on the fly using the rear adjuster, accommodating different workpiece heights on the same line.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S the Right Cylinder?
Select this 40 mm bore when an application requires precise positioning flexibility, as the 100 mm adjustment range allows a single cylinder to cover multiple product sizes. If your setup needs less force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa; if more thrust is required, a 50 mm bore provides 982 N. Because the nominal stroke is 145 mm, side-loading is minimal, but always ensure the load is guided externally for optimal seal life.
Choose the SAIJ adjustable design over a fixed-stroke SAI when machine changeovers demand variable end-stops. To replace an ISO 15552 cylinder, match the 40 mm bore, 145 mm stroke, 100 mm adjustment, G1/4 PT port, and -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. For applications requiring the load to be held mechanically without continuous air, select a SAIL or BSAI cylinder instead.
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 SAIJ40 Adjustable Cylinder SAIJ40BX145-100S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 Newtons of push force and 528 Newtons of pull force. It can reach up to 1130 Newtons of push force at 0.9 MPa.
The rear mechanical stopper allows you to trim the effective travel back by up to 100 mm from the 145 mm nominal stroke. This creates a usable travel window of 45 to 145 mm, enabling precise end-position tuning at commissioning without changing 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.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.