Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10
The AirTAC SAIJ40X45-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 35-45 mm window without swapping components. Equipped with a SUS304 stainless steel rod, it delivers 628 N of push force and 528 N of pull force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses a PT tapered port thread and omits the FB, CA, CB, and CR mounting options found on some standard cylinders, utilizing a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAIJ40BX45-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SAIJ40BX45-10 Is Used
Precision End-Stop Tuning
Dial in the exact 35 to 45 mm retract distance during machine commissioning to perfect part seating without machining external spacers.
Product Size Changeover
Quickly adjust the stroke by up to 10 mm on packaging lines when switching between slightly different product lengths.
Corrosive Light Assembly
Leverage the SUS304 stainless steel rod for light-duty assembly tasks in environments where standard carbon steel rods might face moisture.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX45-10 the Right Cylinder?
Choose this 40 mm bore cylinder when an application requires precise end-position tuning during commissioning or product changeover, rather than relying on a fixed-stroke SAI variant. If your setup needs less force, stepping down to a 32 mm bore yields 402 N of push force at 0.5 MPa; stepping up to a 50 mm bore provides 982 N. Remember that the rear adjuster is a travel stop, not a lock, so load-holding without live air requires a SAIL or BSAI cylinder.
For a true ISO 15552 replacement match, verify the 40 mm bore, 45 mm nominal stroke, 10 mm adjustment range, PT port thread, and the required mounting style. Because this is a non-magnet version, position sensing requires adding a magnet or external detection.
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 SAIJ40BX45-10 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 acts as a mechanical stop that lets you shorten the 45 mm nominal stroke by up to 10 mm, creating a 35-45 mm usable travel window. It only sets the end position and does not lock the load without continuous air pressure.
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