Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S
The AirTAC SAIJ40X325-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel by up to 30 mm, yielding a usable window of 295-325 mm. This fine-tuning capability allows operators to dial in exact end positions during commissioning without adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
Equipped with a SUS304 stainless steel rod (code B), this variant is tailored for environments where corrosion resistance is paramount. The -S magnet enables integration with AirTAC CMSE reed and DMSE electronic sensors, which seat cleanly into the dual-side sensor grooves on the extruded aluminum barrel. Fluid supply connects via PT tapered G1/4 ports, while adjustable air cushions at both ends manage deceleration.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 325 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 SAIJ40BX325-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×325 | 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 SAIJ40BX325-30S Is Used
Product Changeover
Quickly modify the extend position by up to 30 mm on packaging lines when switching between different container sizes, eliminating the need to physically swap cylinders.
Machine Setup
Fine-tune the 295-325 mm travel window during initial commissioning to achieve exact contact pressure without machining custom external spacers.
Variable End Stops
Adjust the retraction point on the fly for sorting diverter gates, accommodating varying product lengths on a single conveyor belt.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S the Right Cylinder?
Select this 40 mm bore when an application requires moderate force (628 N push at 0.5 MPa) alongside precise variable end-stops; step down to a 32 mm bore (402 N push) for lighter loads, or up to a 50 mm bore (982 N push) if thrust demands increase. Because the 325 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the SUS304 rod. The rear adjuster acts purely as a travel stop and does not hold the load without live air—use an AirTAC SAIL or BSAI cylinder if true lock-holding is required. For a direct ISO 15552 replacement match, specify: 40 mm bore, 325 mm stroke, -30 adjustment, PT G1/4 ports, SUS304 rod, -S magnet, and a mounting set from Basic, FA, LB, TC, FTC, TCM1, or 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 SAIJ40 Adjustable Cylinder SAIJ40BX325-30S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw acts as a mechanical stop that shortens the nominal 325 mm stroke by up to 30 mm, creating a usable travel range of 295-325 mm. It sets the end position but does not lock the load without continuous 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.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX325-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.