Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40S 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 SAIJ40AX95-40S
The AirTAC SAIJ40X95-40-S 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 window, letting you fine-tune the retract end position during commissioning without swapping hardware. It delivers 628 N of push force at 0.5 MPa and features a SUS420J2 stainless steel rod for improved corrosion resistance.
This variant includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the dual sensor grooves on the extruded aluminum barrel. The PT-tapered G1/4 port and M12x1.25 rod thread provide robust pneumatic and mechanical connections. Remember that the rear adjuster acts purely as a travel stop to set deceleration; it does not lock the load, so an external rod lock or SAIL cylinder is required if you need to hold position without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40S |
|---|---|
| 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 SAIJ40AX95-40S
| 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 SAIJ40AX95-40S Is Used
Product Size Changeovers
Quickly reconfigure the 55-95 mm stroke window on packaging lines to accommodate different carton or part lengths without changing the cylinder.
Commissioning Fine-Tuning
Dial in the exact retract end-position during machine setup to prevent crashes, using the rear stopper instead of adding external shims.
Variable End-Stop Positioning
Provide adjustable mechanical endpoints for light-duty assembly presses requiring precise 628 N clamping at varying depths.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-40S the Right Cylinder?
Choose this 40 mm bore when an application demands precise variable end-stops, stepping up from a 32 mm bore (402 N push at 0.5 MPa) to gain extra thrust without a major footprint increase. The adjustable stroke is ideal for machine setups requiring frequent product-size changeovers, replacing the need for fixed-stroke SAI cylinders and external stops. To achieve a true drop-in ISO 15552 replacement, match the 40 mm bore, 95 mm stroke, -40 adjustment, PT port thread, and -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40AX95-40S FAQ
At 0.5 MPa, 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 acts as a mechanical stop that lets you trim the nominal 95 mm stroke back by up to 40 mm, creating a usable travel window of 55-95 mm. It sets the end position but does not lock the load without live air.
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