Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-100S 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 SAIJ40BX475-100S
The AirTAC SAIJ40X475-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 375 to 475 mm, letting you dial back the nominal 475 mm stroke by up to 100 mm during commissioning. This bore generates 628 N of push force and 528 N of pull force at 0.5 MPa, operating at speeds from 30 to 800 mm/s.
Built with a SUS304 stainless steel rod for corrosion resistance, it includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel omits tie-rod construction, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options. The rear stopper sets travel ends but does not lock the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-100S |
|---|---|
| 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 SAIJ40BX475-100S
| 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 SAIJ40BX475-100S Is Used
Machine Changeover
Quickly fine-tune the 375-475 mm travel window during product size changeovers on a packaging line without replacing the cylinder.
Variable End-Stop Positioning
Set precise retract positions for different package lengths on a conveyor sorting system using the rear 100 mm adjustment screw.
Commissioning Calibration
Dial in the exact end-of-stroke location during machine setup to perfect the timing of a 628 N push operation.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX475-100S the Right Cylinder?
Choose this 40 mm bore when you need precise end-position tuning across a 375-475 mm window without swapping cylinders or adding external stops. If your application requires less force, stepping down to a 32 mm bore yields 402 N of push at 0.5 MPa. For heavier loads, a 50 mm bore provides 982 N. Because the 475 mm stroke is relatively long, an external guide is recommended to prevent excessive side loading on the 16 mm rod and M12x1.25 thread.
This SAIJ variant is dimensionally interchangeable with ISO 15552 cylinders. It features a PT tapered port (G1/4), the specified -S magnet, and a 100 mm adjustment range. Remember that the rear adjuster acts only as a travel stop; for true load-holding without live air, consider an AirTAC SAIL or BSAI series cylinder instead.
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 SAIJ40BX475-100S 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 the maximum 1.0 MPa pressure, it can deliver up to 128 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm. This creates a usable travel window of 375 to 475 mm, enabling fine-tuning of the end position without external stops. The adjuster is a stop, not a lock, and cannot hold the load without live air.
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