Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10
The AirTAC SAIJ40X140-10 is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you trim the effective travel back by up to 10 mm. This yields a usable 130-140 mm stroke window, giving you precise end-position tuning at commissioning without swapping out the cylinder or adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, fitting perfectly into medium-duty applications.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or mildly chemically exposed environments. It uses a PT tapered port thread and includes variable air cushions at both ends to decelerate the moving load. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount CMSE reed or DMSE solid-state switches if a magnet is specified later.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAIJ40BX140-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAIJ40BX140-10 Is Used
Machine Changeover
Dial in the 130-140 mm travel window precisely when switching product sizes on a packaging line, avoiding the need to physically swap cylinders for minor length differences.
Commissioning Calibration
Fine-tune the retract end-stop during initial machine setup to perfectly time a 628 N push action without adding bulky external stopper blocks.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for light assembly tasks in washdown or humid factory areas where standard carbon steel rods might degrade.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10 the Right Cylinder?
Choose this 40 mm bore when you need the 628 N push force at 0.5 MPa and a 140 mm stroke that requires exact 0-10 mm end-trim adjustments during machine setup or product changeover. If your process demands less force, stepping down to a 32 mm bore provides 402 N; if you need more clamping power, a 50 mm bore yields 982 N. The rear adjuster screw acts strictly as a travel stop to set the retract end position—it does not lock or hold the load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series.
Because the 140 mm stroke is under 300 mm, side-load stress on the M12x1.25 rod thread is manageable without an external guide for standard loads. To replace this cylinder with another ISO 15552 interchangeable unit, match the 40 mm bore, 140 mm stroke, 10 mm adjustment range, PT G1/4 port, and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2—omitting FB, CA, CB, and CR).
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 SAIJ40BX140-10 FAQ
A rear adjusting screw acts as a stopper, allowing you to shorten the nominal 140 mm stroke by up to 10 mm. This creates a 130-140 mm usable travel window that can be fine-tuned during commissioning without changing the cylinder's physical mounting.
At a 0.5 MPa operating pressure, the SAIJ40X140-10 provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
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