Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50S 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 SAIJ40AX95-50S
The AirTAC SAIJ40X95-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel down to a 45-95 mm window. It delivers 628N of push force at 0.5 MPa and features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance. The integrated -S magnet enables position sensing with AirTAC CMSE reed or DMSE solid-state switches.
Because the adjuster acts as a mechanical stop on the retract end, you can dial in the exact end-position during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads match your existing pneumatic plumbing.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50S |
|---|---|
| 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 SAIJ40AX95-50S
| 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 SAIJ40AX95-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance between 45 and 95 mm during machine setup to accommodate changing material thicknesses without swapping hardware.
Product Size Changeovers
Rapidly adjust the stroke window on packaging conveyors to handle different carton sizes on the fly, minimizing line downtime.
Sensor-Ready Positioning
Leverage the built-in -S magnet with DMSE solid-state sensors to confirm adjustable end-positions in automated assembly lines.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX95-50S the Right Cylinder?
Choose this 40mm bore when a 32mm bore (offering 402N push at 0.5 MPa) is too weak, but a 50mm bore (982N at 0.5 MPa) is unnecessarily large. The 50mm adjustment range on a 95mm stroke provides massive flexibility for product changeovers on a packaging line. Remember that the rear screw is a travel stop, not a lock; the cylinder will not hold a load without live air. For load-holding without pressure, use an SAIL air-released lock or BSAI clamp-lock cylinder.
When replacing an ISO 15552 cylinder, match the 40mm bore, 95mm stroke, 50mm adjustment, PT port, and -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). The 16mm rod and M12x1.25 thread handle moderate side loads, though long unsupported strokes still require an external guide.
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 SAIJ40AX95-50S FAQ
At 0.5 MPa, the 40mm bore provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster screw mechanically stops the piston, allowing you to shorten the effective travel anywhere within a 45 to 95 mm window. It acts as a travel stop and does not lock the load without live air pressure.
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