Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-50S 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 SAIJ100AX145-50S
The AirTAC SAIJ100X145-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 95 to 145 mm, letting you dial back the nominal 145 mm stroke by up to 50 mm during commissioning without adding external stops. In the 100 mm bore class, it delivers a robust 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa.
This variant ships with an SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a piston magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic solid-state switches. It uses PT tapered ports sized at G1/2 and relies on variable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-50S |
|---|---|
| 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 SAIJ100AX145-50S
| 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 SAIJ100AX145-50S Is Used
Machine Setup Tuning
Dial in the exact 95 to 145 mm end-position during commissioning to perfect product handling without swapping out the entire cylinder.
Product Changeover
Quickly adjust the stroke length up to 50 mm to accommodate varying package sizes moving down a manufacturing line.
Corrosive Environments
Leverage the SUS420J2 stainless steel rod and high 7068 N output force to execute precise positioning in washdown or corrosive settings.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-50S the Right Cylinder?
Choose this 100 mm bore adjustable model when an application requires fine end-position tuning on the fly, such as accommodating slight product size variations on a conveyor line. If your setup needs less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa, while moving up to a 125 mm bore provides 6136 N for heavier payloads. Because the 145 mm stroke falls under the 300 mm side-load threshold, the 25 mm rod and M20x1.5 thread handle standard loads well, though long unsupported strokes still require an external guide.
When matching this cylinder for an ISO 15552 replacement, verify the 100 mm bore, 145 mm stroke, 50 mm adjustment range, G1/2 PT port, and the required -S magnet. Remember that the rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For true load-holding requirements, consider the SAIL lock or BSAI clamp-lock variants instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR.
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 SAIJ100AX145-50S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. If you increase the operating pressure to 0.9 MPa, the push force reaches 7068 N.
The rear adjusting screw acts as a mechanical stop that lets you shorten the 145 mm nominal stroke by up to 50 mm, creating a usable travel window of 95 to 145 mm. It functions as an end-position stop and does not lock or hold the load without continuous air pressure.
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