Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100
The AirTAC SAIJ40X350-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 250-350mm usable travel window from its 350mm nominal stroke. Delivering 628N of push force at 0.5 MPa, it uses a PT G1/4 port and a corrosion-resistant SUS304 stainless steel rod for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This adjustable model allows precise end-position tuning during commissioning without swapping cylinders or adding external stops. The rear adjuster acts strictly as a travel stop and deceleration aid, not a load lock, meaning live air pressure is required to hold position. It supports a 30-800mm/s speed range and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAIJ40BX350-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 SAIJ40BX350-100 Is Used
Variable End-Stop Positioning
Dial in the exact retraction point within the 250-350mm window during machine setup without machining new hard stops.
Product Size Changeover
Quickly adapt the stroke on packaging lines when product dimensions change, using the rear screw to trim travel up to 100mm.
Diverter Gate Control
Fine-tune the actuation distance of sorting gates on conveyors to handle varying package widths accurately.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX350-100 the Right Cylinder?
Choose this 40mm bore cylinder when your application requires 628N of push force at 0.5 MPa and highly variable end-stops. Stepping down to a 32mm bore reduces force to 402N, while stepping up to a 50mm bore increases it to 982N. The 100mm adjustment range is ideal for product-size changeovers on a packaging line, replacing fixed-stroke SAI cylinders when exact travel distances fluctuate.
For a drop-in ISO 15552 replacement, match the 40mm bore, 350mm nominal stroke, PT G1/4 port, and SUS304 rod material. Because the 350mm stroke is relatively long, an external guide is recommended to prevent excessive side-load on the 16mm rod thread. If you need true load-holding without continuous air pressure, select the SAIL pneumatic lock or BSAI clamp-lock series instead of relying on the rear stopper.
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 SAIJ40BX350-100 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At the maximum 1.0 MPa pressure, it delivers 128 kgf.
The rear adjuster screw trims the effective travel up to 100mm, creating a 250-350mm usable stroke window. This stopper sets the end position but does not lock the load; live air is required to maintain position.
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 SAIJ40BX350-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.