Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40
The AirTAC SAIJ40X130-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This creates a highly flexible 90-130 mm usable window, letting you dial in the exact retract position during commissioning without swapping out the entire actuator. Built with an extruded aluminum barrel, it delivers a solid 628 N of push force at 0.5 MPa.
This specific configuration utilizes a SUS304 stainless steel piston rod (code B) for superior corrosion resistance, paired with PT tapered port threads. The rear adjustment screw functions purely as a mechanical stop to set the end-of-travel position, working in tandem with the standard variable air cushions to decelerate the load. It does not lock or hold the load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAIJ40BX130-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SAIJ40BX130-40 Is Used
Changeover Calibration
Quickly adjust the retract end-stop from 90 to 130 mm during product format changes on a packaging line, ensuring precise positioning without changing hardware.
Machine Setup Fine-Tuning
Dial in the exact end position during initial commissioning to prevent crashes, using the rear screw to perfectly set the resting state of the tooling.
Variable End Positioning
Accommodate multiple part sizes on a single fixture by adjusting the stroke window on the fly, relying on the 628 N force to push consistently.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-40 the Right Cylinder?
Choose this 40 mm bore when your application requires approximately 628 N of push force at 0.5 MPa, which is a noticeable step up in thrust from the 32 mm bore (402 N) without moving up to the larger 50 mm profile (982 N). The adjustable stroke is specifically beneficial for machine setups that require variable end-stops or frequent product-size changeovers, eliminating the need to bolt on external physical stops. For any load-holding requirements without live air pressure, this cylinder is not suitable; you should instead look at the SAIL or BSAI locking cylinder series.
When replacing an ISO 15552 cylinder, verify the 40 mm bore, 130 mm nominal stroke, 40 mm adjustment range, PT G1/4 port, and the absence of a magnet (-S). Because this actuator uses a 16 mm rod with an M12x1.25 thread, it handles side loads well, but for this 130 mm stroke, always ensure proper external guiding if the load is heavy or off-center. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ40BX130-40 FAQ
At a standard operating pressure of 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 879 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the 130 mm nominal stroke by up to 40 mm, creating a usable travel window of 90 to 130 mm. It sets the end position but does not lock the load without live air pressure.
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