Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40S 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 SAIJ40BX95-40S
The AirTAC SAIJ40X95-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 55 to 95 mm, allowing you to dial back the 95 mm nominal stroke by up to 40 mm during commissioning. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for moderate-load positioning tasks.
This variant includes a SUS304 stainless steel piston rod (code B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors. The rear adjuster acts strictly as a travel stop to fine-tune the retract end without needing external stops.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40S |
|---|---|
| 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 SAIJ40BX95-40S
| 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 SAIJ40BX95-40S Is Used
Machine Setup Changeover
Dial in the exact retract distance between 55 and 95 mm when switching product sizes on a packaging line without physically swapping cylinders.
End-Position Tuning
Fine-tune the final end-stop during commissioning to absorb mechanical tolerances and achieve precise positioning of moderate loads.
Variable End Stops
Use the built-in rear adjuster to create a flexible travel window for automated assembly stations requiring frequent stroke adjustments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40S the Right Cylinder?
Choose this 40 mm bore when you need more force than the 32 mm version (402 N push at 0.5 MPa) but want a smaller footprint than the 50 mm option (982 N push). The adjustable stroke is perfect for product changeovers, letting you set variable end-stops on the fly instead of swapping a fixed-stroke SAI cylinder. Remember that the adjuster is a stop, not a lock; if you need to hold a load without live air pressure, consider the SAIL or BSAI locking cylinders. To match this ISO 15552 cylinder, specify a 40 mm bore, 95 mm stroke, 40 mm adjustment, PT ports, SUS304 rod, and a -S magnet.
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 SAIJ40BX95-40S FAQ
At a 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 allows you to shorten the 95 mm nominal stroke by up to 40 mm, creating a usable travel window of 55 to 95 mm. This stopper fine-tunes the retract end position but does not lock the load without continuous air pressure.
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