Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S
The AirTAC SAIJ100X145-40-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the nominal 145 mm travel by up to 40 mm to achieve a precise 105-145 mm usable window. It delivers substantial thrust, pushing 3927 N and pulling 3681 N at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. The barrel features sensor grooves on both sides, and because this unit includes a magnet (-S), it integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for exact end-of-stroke detection.
This model features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. Fluid ports are PT (tapered) G1/2 connections. It is important to note that the rear adjuster acts strictly as a mechanical stop to decelerate and set the travel end; it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100 Adjustable Cylinder SAIJ100AX145-40S Is Used
Product Changeover
Dial in the 105-145 mm stroke window during machine setup to handle different product lengths without physically swapping out the pneumatic cylinder.
Heavy Pressing
Leverage the 3927 N push force at 0.5 MPa for firm pressing and forming operations, using the rear stopper to set exact material deflection limits.
Positioning Stops
Use the rear adjuster to establish a precise mechanical end-stop for heavy conveyors, relying on CMSE/DMSE sensors to verify the retracted position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-40S the Right Cylinder?
Choose this 100 mm bore when you need high force (3927 N push at 0.5 MPa) alongside variable end-stop tuning. If your application requires less force, stepping down to an 80 mm bore yields 2513 N push force, whereas moving up to a 125 mm bore provides 6133 N. The adjustable stroke is ideal for product-size changeovers on a line, allowing you to fine-tune the retract position at commissioning without swapping the cylinder or adding external stops. For true load-holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) series, as the SAIJ adjuster is not a brake.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 145 mm stroke, 40 mm adjustment range, PT G1/2 port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the 145 mm stroke is under 300 mm, side-load stress is minimal, but long unsupported loads 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 SAIJ100 Adjustable Cylinder SAIJ100AX145-40S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, push force increases to 7068 N. The operational speed range is 30-800 mm/s.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from the nominal 145 mm down by up to 40 mm, creating a 105-145 mm usable window. It only sets the travel end and does not lock the load without live air.
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