Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40 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 SAIJ40AX95-40
The AirTAC SAIJ40X95-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 95 mm travel by up to 40 mm. This creates a highly flexible 55-95 mm usable stroke window, perfect for accommodating product size variations without physically swapping the actuator. It delivers a solid 879N of push force at 0.7 MPa, making it a robust choice for mid-tier automation tasks.
Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract end-position directly at commissioning. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, and the piston rod utilizes a SUS420J2 stainless steel construction for enhanced corrosion resistance. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40 |
|---|---|
| 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 SAIJ40AX95-40
| 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 SAIJ40AX95-40 Is Used
Machine Changeovers
Dial in the exact end-stop for new product runs, shifting the travel window between 55 and 95 mm rapidly without changing the cylinder.
Variable Positioning
Fine-tune the retract position during initial setup to perfect a pressing or clamping operation before finalizing the machine cycle.
Product Size Transitions
Adapt a conveyor diverter or stopper arm on the fly to handle varying package lengths within the 40 mm adjustment range.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40 the Right Cylinder?
Selecting this 40 mm bore over a neighboring 32 mm bore jumps your 0.5 MPa push force from 402N up to 628N, providing extra thrust for tighter clamping or lifting. The adjustable 55-95 mm travel window is chosen when a machine requires frequent product changeovers, eliminating the need to add external physical stops. Because the stroke is under 300 mm, side-load stress is minimal, though the 16 mm rod and M12x1.25 thread still handle standard operational loads well. For load-holding without continuous air pressure, this cylinder is not a lock; you would need to explore the SAIL or BSAI series instead. To match this exact configuration, specify the 40 mm bore, 95 mm stroke, 40 mm adjustment, PT tapered ports, SUS420J2 rod, and no 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 SAIJ40AX95-40 FAQ
The rear adjuster screw acts as a mechanical stopper that lets you shorten the effective stroke from 95 mm down to as little as 55 mm, providing a 40 mm tuning window without swapping the cylinder.
It provides 628N of push force and 528N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 879N.
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Standard models usually ship in 3-4 days.
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