Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50
The AirTAC SAIJ40X110-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 879N of push force at 0.7 MPa, and its 110mm nominal stroke can be dialed back by up to 50mm, yielding a highly flexible 60-110mm usable travel window. This allows precise end-position tuning at commissioning without swapping out the entire unit.
Equipped with a SUS304 stainless steel rod, this version is tailored for environments where corrosion resistance is paramount. It uses PT tapered ports and incorporates variable air cushions at both ends to decelerate the load smoothly. The rear adjuster functions strictly as a travel stop to set the retraction endpoint, meaning it cannot hold a load in place without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 110 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 SAIJ40BX110-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×110 | 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 SAIJ40BX110-50 Is Used
Variable End-Stop Tuning
Dial in the exact retraction depth within the 60-110mm window during machine commissioning to accommodate different material thicknesses without adding external physical stops.
Product Size Changeover
Quickly adjust the cylinder's effective stroke on packaging lines when switching between different product sizes, minimizing downtime and avoiding cylinder swaps.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in light manufacturing environments where moisture or minor chemical exposure would degrade standard carbon steel rods.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50 the Right Cylinder?
Select this 40mm bore cylinder when an application requires variable end stops or frequent product-size changeovers, stepping up from a 32mm bore that provides only 563N push force at 0.7 MPa. The 50mm adjustment range is ideal for dialing in exact retraction depths on the fly. Because the stroke is 110mm, side-loading is minimal, but always ensure the load is guided externally to prevent binding. To replace an existing ISO 15552 cylinder, match the 40mm bore, 110mm stroke, PT port thread, and the desired mounting style from the available SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
If your setup requires true load-holding without constant air pressure, a standard SAIJ will not suffice; consider an AirTAC SAIL with an air-released lock or a BSAI clamp-lock cylinder instead. Note that this specific SKU does not include a magnet, so position sensing via CMSE or DMSE switches is not supported without adding the -S 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 SAIJ40BX110-50 FAQ
At 0.5 MPa, it provides 628N of push force and 528N of pull force. When operating at 0.7 MPa, the push force increases to 879N.
The rear adjuster acts as a mechanical stop that shortens the 110mm nominal stroke by up to 50mm, creating a usable travel window of 60-110mm. It only sets the end position and does not lock the load without live air pressure.
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