Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S
The AirTAC SAIJ100X155-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel down by up to 75 mm. This creates a highly flexible usable stroke window of 80 to 155 mm, letting you dial in exact end positions during machine commissioning without swapping out the physical cylinder. Built with a SUS304 stainless steel rod (option B), it provides excellent corrosion resistance for harsher environments.
Delivering a robust 3927 N of push force at 0.5 MPa and utilizing a G1/2 port, this bore size is engineered for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and because this unit includes a magnet (-S), it integrates seamlessly with AirTAC CMSE reed switches and DMSE solid-state electronic sensors for precise end-of-travel detection. The rear adjuster acts purely as a travel stop to set deceleration, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 155 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 SAIJ100BX155-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×155 | 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 SAIJ100BX155-75S Is Used
Product Changeover Tuning
Quickly adjust the retract stopper by up to 75 mm to accommodate different product sizes on a packaging line without physically replacing the cylinder.
Heavy-Duty End Positioning
Leverage the 3927 N push force and SUS304 rod to precisely set heavy machinery end stops during initial commissioning or maintenance routines.
Variable Stroke Ejection
Use the 80-155 mm travel window to vary the ejection distance of parts from a machine bed based on specific run requirements.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX155-75S the Right Cylinder?
Selecting the SAIJ100X155-75-S makes sense when your application requires significant end-position flexibility on a heavy load, as the 75 mm adjustment window is vast compared to smaller codes. If you need slightly less push force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. Conversely, moving up to a 125 mm bore provides 6136 N. Keep in mind that for load-holding without live air pressure, this adjustable stopper is not a lock; you would need to look at the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
Because this is a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders. To match this exact SKU, specify a 100 mm bore, 155 mm nominal stroke, 75 mm rear adjustment range, PT tapered port threads, SUS304 stainless steel rod material, a magnet for CMSE/DMSE sensors, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Although the 155 mm stroke is below the 300 mm side-load warning threshold, the substantial 25 mm rod and M20x1.5 thread handle high stresses well, though external guides are always recommended for heavy off-center loads.
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 SAIJ100BX155-75S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 801 kgf.
The rear stopper screw allows you to shorten the 155 mm nominal stroke by up to 75 mm, giving an adjustable travel window between 80 mm and 155 mm. This stopper only sets the end position; it does not lock the load without live air pressure.
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