Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 230mm 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
- Stroke230 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S
The AirTAC SAIJ40X230-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 190 to 230 mm, allowing you to dial back the nominal 230 mm stroke by up to 40 mm during machine commissioning. Delivering 628 N of push force at 0.5 MPa, it handles moderate actuation tasks with precision.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and carries an -S magnet for electronic DMSE or reed CMSE position sensing. The extruded aluminum barrel includes sensor grooves on both sides, and fluid is supplied via PT tapered ports.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 230 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 SAIJ40BX230-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×230 | 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 SAIJ40BX230-40S Is Used
Machine Commissioning
Fine-tune the 190-230 mm travel window during setup to hit exact end positions without machining custom spacers.
Product Changeover
Quickly adapt the cylinder stroke on packaging lines when switching to a different product size.
Variable End Stops
Dial in the retract position by up to 40 mm to accommodate varying material lengths on the fly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX230-40S the Right Cylinder?
Choose this 40 mm bore when you need precise end-position tuning without adding external stops; if your application requires less force, the 32 mm bore offers 402 N at 0.5 MPa. The rear adjuster acts strictly as a travel stop and does not hold the load without live air. For load-holding requirements without pressure, consider an external pilot-operated check valve or the AirTAC SAIL lock cylinder.
This SAIJ40X230-40-S is dimensionally interchangeable per ISO 15552. It features a 16 mm rod, G1/4 PT ports, and supports the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 230 mm stroke is substantial, ensure you use an external guide to prevent side-load damage on the unsupported rod.
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 SAIJ40BX230-40S FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers 1130 N of push force.
A rear external stopper screw lets you shorten the effective travel from the 230 mm nominal stroke down to 190 mm. This adjuster is a mechanical stop for setting end positions, not a lock, and it does not hold the load without live air pressure.
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