Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100
The AirTAC SAIJ40X180-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force at 0.5 MPa and features a wide usable travel window of 80 to 180mm, letting you dial back the nominal 180mm stroke by up to 100mm during commissioning. This adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
Built with a SUS304 stainless steel rod (option B) for superior corrosion resistance, this 40mm bore cylinder utilizes PT tapered ports and operates at speeds between 30 and 800mm/s. It supports a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets entirely.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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 SAIJ40BX180-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 SAIJ40BX180-100 Is Used
Machine Changeover
Quickly reconfigure the retract end-stop for different product sizes on a packaging line without replacing the cylinder or adding shims.
Commissioning Calibration
Fine-tune the 80-180mm travel window during initial setup to perfectly time machine sequencing and avoid mechanical hard crashes.
Variable End Positioning
Adjust the rear stop screw on the fly to accommodate varying material thicknesses or tooling lengths in automated assembly.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-100 the Right Cylinder?
Select this 40mm bore cylinder when an application requires precise retract-end tuning without swapping physical components; its 100mm adjustment window is significantly larger than smaller codes, accommodating major product changeovers. If your setup needs less force, stepping down to a 32mm bore yields 402N at 0.5MPa, while stepping up to a 50mm bore provides 982N for heavier loads. For load-holding without continuous air pressure, this standard adjuster stop is insufficient, and you should evaluate an AirTAC SAIL or BSAI locking cylinder instead.
When replacing an ISO 15552 cylinder, match the 40mm bore, 180mm nominal stroke, 100mm adjustment range, PT port thread, and the chosen mounting bracket. Because this unit lacks a magnet, it cannot host CMSE or DMSE sensors; if position feedback is required, specify an -S variant. Furthermore, the 16mm rod and M12x1.25 thread provide robust side-load capacity, but any stroke approaching 300mm or beyond still necessitates an external guide rail 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 SAIJ40BX180-100 FAQ
At a standard 0.5 MPa operating pressure, this 40mm bore cylinder generates 628N of push force and 528N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 879N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from its 180mm nominal length down to as little as 80mm. It only sets the travel end and deceleration point; it does not lock the load without live air pressure.
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