Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10 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 SAIJ40BX500-10
The AirTAC SAIJ40X500-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that creates a 490-500mm usable travel window. Delivering 879N of push force at 0.7 MPa, it utilizes a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds of 30-800mm/s.
This model features PT tapered port threads (G1/4) and lacks a standard magnet, meaning position sensing requires external switches rather than integrated CMSE or DMSE sensors. The extruded aluminum barrel maintains standard ISO 15552 mounting dimensions while the rear stopper screw allows precise end-position tuning without adding external physical stops.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10 |
|---|---|
| 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 SAIJ40BX500-10
| 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 SAIJ40BX500-10 Is Used
Machine Commissioning
Fine-tune the 490-500mm end position during setup to achieve precise mechanical alignment without machining new hard stops.
Product Changeover
Quickly adjust the retract stroke by up to 10mm to accommodate different package sizes on a packaging line.
Long-Stroke Assembly
Leverage the 500mm stroke and SUS304 rod for extended reach operations requiring corrosion resistance and exact end-positioning.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX500-10 the Right Cylinder?
Choose this 40mm bore when an application requires 879N of thrust at 0.7 MPa, stepping up from a 32mm bore (563N) if more power is needed, or down to a 50mm bore (1374N) for heavier loads. The adjustable stroke is ideal for machine commissioning and product changeovers, allowing you to dial in the exact 490-500mm end position without swapping the cylinder. Because the stroke is 500mm, ensure adequate external guiding to prevent excessive side-loading on the rod.
To match this ISO 15552 interchangeable cylinder, confirm the 40mm bore, 500mm stroke, 10mm adjustment range, PT port threads, and the absence of a magnet. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for positive load-holding, consider an AirTAC SAIL or BSAI cylinder. SAIJ mounting options include 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 SAIJ40BX500-10 FAQ
At 0.7 MPa operating pressure, this 40mm bore cylinder provides 879N of push force and 740N of pull force. It can deliver up to 1130N push force at its maximum 0.9 MPa pressure.
The rear adjuster screw allows you to shorten the effective travel from the nominal 500mm down to 490mm, creating a 490-500mm window. It acts as a physical stop to fine-tune the retract end position without needing external stops.
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