Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S
The AirTAC SAIJ40X65-30-S is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a usable travel window of 35 to 65 mm, allowing you to dial back the nominal 65 mm stroke by up to 30 mm during machine commissioning. Delivering 628 N push and 528 N pull force at 0.5 MPa, it fits mid-range actuation tasks perfectly.
This variant uses a SUS304 stainless steel rod (code B) for superior corrosion resistance and includes a built-in magnet (-S) for electronic or reed sensing. It features PT tapered ports and dual-side sensor grooves compatible with AirTAC CMSE reed and DMSE solid-state switches. The mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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 SAIJ40BX65-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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 SAIJ40BX65-30S Is Used
Machine Setup Tuning
Dial in the exact end-of-stroke position within the 35-65 mm window during initial commissioning without swapping hardware.
Product Size Changeover
Quickly retract the end-stop by up to 30 mm to accommodate different package lengths on a packaging line.
Variable End Stops
Use the integrated rear screw to fine-tune the travel limit for delicate pressing or clamping tasks.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX65-30S the Right Cylinder?
Choose this 40 mm bore when an application requires around 628 N of push force at 0.5 MPa, stepping down from a 50 mm bore (982 N) for a lighter footprint or up from a 32 mm bore (402 N) for higher thrust. The 30 mm adjustment range is ideal for product changeovers, letting you set variable end-stops without physically swapping the cylinder or adding external stopper blocks.
For load-holding requirements without continuous air pressure, note that the rear adjuster acts only as a travel stop, not a brake. You should specify an SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external pilot-operated check valve. To match this ISO 15552 cylinder exactly, confirm the 40 mm bore, 65 mm stroke, 30 mm adjuster, PT port thread, and the -S magnet option.
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 SAIJ40BX65-30S FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1130 N of push force.
The rear adjuster screw lets you mechanically shorten the 65 mm nominal stroke by up to 30 mm, creating a usable travel window of 35 to 65 mm. It acts as a physical stop and does not lock the load without live air pressure.
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