Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75
The AirTAC SAIJ40X95-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 95 mm stroke that can be dialed back by up to 75 mm, creating a highly flexible 20-95 mm usable travel window for precise end-position tuning during commissioning. Delivering 628 N of push force at 0.5 MPa, it handles mid-range actuation tasks with ease.
This variant is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE or DMSE switches. Because the rear adjuster acts strictly as a mechanical stop, it cannot hold a load without live air pressure; for true fail-safe load holding, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAIJ40BX95-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SAIJ40BX95-75 Is Used
Variable End-Stop Positioning
Dial the stroke back from 95 mm to 20 mm on the fly to accommodate different material lengths without changing out the physical cylinder.
Commissioning Fine-Tuning
Trim the final few millimeters of travel during machine setup to perfectly time the mechanical sequence without adding external shims.
Product Size Changeover
Rapidly adjust the retract distance on packaging lines handling varying carton sizes, ensuring precise spacing without hardware modifications.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75 the Right Cylinder?
Choose this 40 mm bore when your application requires less force than the 50 mm bore (982 N at 0.5 MPa) but more than the 32 mm bore (402 N). The 75 mm adjustment range is ideal for machines processing varying product sizes, allowing you to shift the end-stop without physically swapping the cylinder or adding external stops. When replacing an ISO 15552 unit, match the 40 mm bore, 95 mm stroke, PT port threads, and mounting interface (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Since the stroke is under 300 mm, side-load concerns are minimal, but always ensure the 16 mm rod is properly aligned to prevent premature seal wear.
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 SAIJ40BX95-75 FAQ
It has a nominal stroke of 95 mm with a 75 mm rear adjuster, allowing you to set the effective travel anywhere within a 20-95 mm window.
No, the rear adjuster functions only as a travel stop and cannot hold a load without live air. For fail-safe load holding, use an AirTAC SAIL or BSAI cylinder.
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