Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50S 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 SAIJ40BX110-50S
The AirTAC SAIJ40X110-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a 628N push force at 0.5 MPa. Its integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE electronic sensors housed within the dual-side extruded aluminum barrel grooves. The SUS304 stainless steel rod provides excellent corrosion resistance for demanding environments.
With a 110mm nominal stroke and a 50mm adjustment range, this SKU provides a usable travel window of 60-110mm. This wide tuning band allows operators to dial in exact end positions during commissioning or product changeovers without adding external stops. The rear adjuster acts purely as a travel stop to set deceleration alongside the standard air cushions, meaning it will not hold a load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50S |
|---|---|
| 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 SAIJ40BX110-50S
| 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 SAIJ40BX110-50S Is Used
Product Changeover
Quickly reconfigure the 60-110mm travel window for different package sizes on a packaging line without swapping out the entire cylinder assembly.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to achieve exact clamping or pressing depths, avoiding the need for machined spacer shims.
Adjustable Ejection
Dial back the ejection stroke on the fly to gently push varying part sizes out of a machining fixture without over-traveling.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX110-50S the Right Cylinder?
Select this 40mm bore when an application requires variable end-stops within a 60-110mm window, stepping down from a 63mm bore (1559N at 0.5 MPa) if that excessive force risks damaging lighter tooling. If your process demands fail-safe load holding without continuous air pressure, a standard SAIJ is insufficient; consider an AirTAC SAIL or BSAI locking cylinder instead. For ISO 15552 dimensional interchangeability, match the 40mm bore, 110mm stroke, PT tapered port threads, and -S magnet.
At a 110mm stroke, the 16mm rod and M12x1.25 thread handle moderate side loads adequately, but any tooling generating significant leverage should still rely on an external guide rail. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets found on some fixed-stroke variants.
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 SAIJ40BX110-50S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. If operated at 0.7 MPa, the push force increases to 879N.
The rear adjuster screw allows you to shorten the 110mm nominal stroke by up to 50mm, creating a usable travel window of 60-110mm. The adjuster acts as a mechanical stop to set the end position and does not function as a lock to hold the load without air pressure.
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