Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S
The AirTAC SAIJ40X190-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 190 mm stroke that can be dialed back by up to 40 mm, giving you a usable travel window of 150-190 mm for precise end-position tuning during commissioning. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds between 30-800 mm/s.
This adjustable model features PT tapered port threads and includes a magnet for electronic DMSE or reed CMSE switches, which mount cleanly into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster acts purely as a mechanical stop to trim the travel end and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 190 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 SAIJ40BX190-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×190 | 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 SAIJ40BX190-40S Is Used
Machine Changeover
Dial in the 150-190 mm travel window during product size transitions without replacing the cylinder or bolting on external physical stops.
End-Position Tuning
Fine-tune the retract end-stop during initial commissioning to perfect the 628 N push stroke alignment on the assembly line.
Variable End Stops
Adapt the 190 mm stroke to match varying material thicknesses or widths dynamically fed into the manufacturing cell.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-40S the Right Cylinder?
Select this 40 mm bore cylinder when your application requires 628 N push force at 0.5 MPa and on-the-fly stroke trimming without swapping out the entire barrel or adding external stops. If your changeover requirements demand less force, the 32 mm bore provides 402 N; if you need more power, the 50 mm bore yields 982 N. Because this is a 190 mm stroke, external guidance is recommended if the load is unsupported to prevent excessive rod side-loading.
The SAIJ40X190-40-S is dimensionally interchangeable per ISO 15552 standards but uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. To match this cylinder exactly for replacement, verify the 40 mm bore, 190 mm stroke, 40 mm adjustment range, PT port threads, SUS304 rod material, and the -S magnet 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 SAIJ40BX190-40S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it delivers 128 kgf.
The rear adjuster screw allows you to shorten the effective travel from the 190 mm nominal stroke down to 150 mm. This mechanical stop only sets the travel end and does not lock or hold the load without continuous live air pressure.
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