Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10
The AirTAC SAIJ40X115-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 105 to 115 mm usable travel window, allowing you to dial in the exact end position during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Equipped with a SUS304 stainless steel rod, this 40 mm bore unit delivers 879 N of push force at 0.7 MPa. It uses a PT tapered port and supports speeds of 30-800 mm/s. The rear adjuster acts purely as a travel stop for end-position tuning and does not lock the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 115 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 SAIJ40BX115-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×115 | 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 SAIJ40BX115-10 Is Used
Machine Setup Commissioning
Fine-tune the 105-115 mm travel window during initial machine build to perfectly align end-of-stroke positions without swapping cylinders.
Product Size Changeover
Quickly adjust the retract stop on packaging lines when switching to a different product size, minimizing downtime.
Variable End-Stop Positioning
Dial in the exact 10 mm adjustment range to accommodate varying material thicknesses or feeding lengths on the fly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your setup requires variable end-stops or precise product changeover tuning. If your application needs less force, the 32 mm bore offers 563 N at 0.7 MPa; for heavier loads, the 50 mm bore provides 1374 N. Because the stroke is 115 mm, side-load risks are moderate, but external guides are recommended if carrying significant lateral loads.
To match this ISO 15552 cylinder for a replacement, verify the 40 mm bore, 115 mm stroke, 10 mm adjustment range, PT port thread, and SUS304 (code B) rod material. Note that SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For load-holding without live air, consider the SAIL or BSAI series 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 SAIJ40BX115-10 FAQ
This 40 mm bore cylinder generates 879 N of push force and 528 N of pull force at a 0.7 MPa operating pressure, with a maximum thrust of 1130 N at 0.9 MPa.
The rear adjuster screw lets you shorten the effective travel from 115 mm down to 105 mm. It functions as a mechanical stop for end-position tuning and does not hold the load without continuous air pressure.
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