Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S
The AirTAC SAIJ40X500-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 490-500 mm. Delivering 879 N of pull force at 0.7 MPa, it is equipped with a SUS304 stainless steel rod and a PT tapered port thread for pneumatic connection.
This model includes a magnet for CMSE and DMSE sensors, offering electronic or reed switch options for position feedback. The extruded aluminum barrel integrates sensor grooves on both sides, and the adjustable stopper acts solely as a travel end-tuner, not a load lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAIJ40BX500-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SAIJ40BX500-10S Is Used
Machine Commissioning
Dial in the exact 490-500 mm end-stop during initial setup to perfect product handling without machining custom spacers.
Product Changeover
Quickly trim the stroke up to 10 mm on automated lines when switching between slightly different package sizes.
Variable End Stops
Fine-tune the retract position to accommodate mechanical wear or slight material thickness variations over time.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10S the Right Cylinder?
Choose this 40 mm bore cylinder when an application requires 628 N push force at 0.5 MPa and precise end-position tuning without adding external stops. If your setup needs higher force, stepping up to the 50 mm bore yields 982 N push at 0.5 MPa. Because the stroke is 500 mm, an external guide is recommended to manage side-load stress on the 16 mm rod.
The rear adjuster modifies the retract end position during commissioning but does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. This SAIJ variant supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options.
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 SAIJ40BX500-10S FAQ
At 0.7 MPa, this 40 mm bore cylinder provides 879 N of push force and 724 N of pull force. It can deliver a maximum push force of 1130 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the nominal 500 mm stroke by up to 10 mm, creating a usable travel window of 490-500 mm. This stopper only tunes the end position and does not lock the load without live air pressure.
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