Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S
The AirTAC SAIJ40X475-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 465-475 mm usable travel window, allowing you to dial back the nominal 475 mm stroke by up to 10 mm during commissioning. This bore size delivers 628 N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
It includes a built-in magnet for position sensing with CMSE reed or DMSE electronic switches. The extruded aluminum barrel incorporates sensor grooves on both sides, and the PT tapered port threads match the standard G1/4 interface for this bore. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 475 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 SAIJ40BX475-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×475 | 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 SAIJ40BX475-10S Is Used
Machine Setup Tuning
Dial in the exact retract position within the 465-475 mm window during initial commissioning without installing external physical stops.
Product Changeover
Quickly adapt the end-of-stroke position on a packaging line when transitioning between different product sizes or carton formats.
Variable End Stops
Use the 10 mm rear adjustment screw to fine-tune the final deceleration point alongside the adjustable air cushions at both ends.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-10S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires precise end-position tuning without physically swapping the cylinder. If you need slightly less push force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa. If your application requires holding the load without live air pressure, note that the rear adjuster is a travel stop and not a lock; consider an AirTAC SAIL or BSAI locking cylinder for fail-safe load holding.
Because the 475 mm stroke is relatively long, the 16 mm rod should be guided externally to prevent excessive side-loading and premature seal wear. This SAIJ configuration uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It is dimensionally interchangeable with ISO 15552 cylinders of the same bore, stroke, and adjustment range when matching the PT port, mounting style, and -S magnet option.
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 SAIJ40BX475-10S FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
The rear adjuster screw allows you to shorten the effective stroke from 475 mm down to a minimum of 465 mm. This provides a 10 mm usable travel window for fine-tuning the end position at commissioning without replacing the cylinder.
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