Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50
The AirTAC SAIJ40X95-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 95 mm stroke that can be dialed back by up to 50 mm, yielding a highly flexible 45-95 mm usable travel window. Delivering 628 N of push force at 0.5 MPa, it uses a G1/4 port and a 16 mm rod.
This configuration features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The rear adjustment mechanism acts purely as a mechanical stop to fine-tune the retraction end position during commissioning; it is not a locking device and cannot hold a load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAIJ40AX95-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SAIJ40AX95-50 Is Used
Product Changeovers
Dial in the 45-95 mm travel window rapidly during format size changes on packaging lines without dismounting the cylinder.
End-Stop Calibration
Fine-tune the retract position at machine commissioning to achieve precise mechanical stops without adding external shims.
Variable Positioning
Adapt the effective stroke on the fly for automated assembly stations requiring multiple retracted end positions from one actuator.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50 the Right Cylinder?
Choose this 40 mm bore when an application demands precise end-position tuning without swapping cylinders or adding external stops, providing 628 N push and 528 N pull at 0.5 MPa. If your setup requires less force, stepping down to a 32 mm bore yields 402 N push, while moving up to a 50 mm bore provides 982 N. The generous 50 mm adjustment range on this 95 mm stroke is ideal for product changeovers where end-stops vary significantly.
For a direct ISO 15552 replacement match, specify the 40 mm bore, 95 mm stroke, 50 mm adjustment, PT tapered port thread, and the SUS420J2 rod material. Because this SKU lacks the -S magnet option, it cannot host CMSE or DMSE electronic sensors. If pneumatic load-holding is required without live air, consider an AirTAC SAIL or BSAI series cylinder instead of relying on the adjuster.
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 SAIJ40AX95-50 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to trim the effective travel back by up to 50 mm from the 95 mm nominal stroke, creating a 45-95 mm usable window. It functions as a mechanical stop for end-position tuning, not as a load-holding lock.
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