Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S
The AirTAC SAIJ40X80-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 628N push force at 0.5 MPa and features an M12x1.25 rod thread. The integrated -10 adjustment code allows you to dial back the 80mm nominal stroke by up to 10mm, creating a precise 70-80mm usable travel window for commissioning without swapping hardware.
This unit includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and carries the -S magnet option for seamless compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides, and the rear stopper functions strictly as an end-position stop, not a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIJ40BX80-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SAIJ40BX80-10S Is Used
End-Position Tuning
Dial in the exact retract distance within the 70-80mm window during machine commissioning to accommodate varying material thicknesses.
Product Changeover
Quickly adjust the stroke end-stop on packaging lines when switching to a different carton size without changing the cylinder.
Sensor Calibration
Leverage the -S magnet and CMSE/DMSE sensors to confirm exact position feedback while fine-tuning the rear stopper screw.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10S the Right Cylinder?
Choose this 40mm bore when an ISO 15552 footprint is required but the exact end-of-stroke position varies by product type, making a fixed SAI cylinder impractical. If your application requires higher thrust, stepping up to the 50mm bore yields 982N of push force at 0.5 MPa. The PT tapered port threads and M12x1.25 rod provide robust mounting, while the 30-800mm/s speed range handles rapid cycling.
When matching this for an ISO 15552 replacement, verify the 80mm stroke, 10mm adjustment range, PT port, and -S magnet. Remember that the rear adjuster only decelerates and sets the travel end; it does not hold the load without live air. For true load-holding, consider the SAIL or BSAI series. The SAIJ 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 SAIJ40BX80-10S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. It can deliver up to 1130N of push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 80mm nominal stroke by up to 10mm, providing a usable travel window of 70-80mm. It decelerates the travel end but does not lock the load without continuous air pressure.
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