Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30
The AirTAC SAIJ100X75-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 75 mm travel by up to 30 mm for a precise 45-75 mm usable window. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads while utilizing a PT tapered port and a durable SUS304 stainless steel rod to resist corrosion in harsh environments.
The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning or product changeover, meaning it does not hold the load without live air pressure. For load-holding without continuous air, an external rod lock or related types like SAIL and BSAI are required. This extruded aluminum profile cylinder supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100BX75-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100BX75-30 Is Used
Product Changeover
Quickly adjust the 45-75 mm travel window to accommodate different product sizes on the same line without changing the cylinder.
Machine Setup
Fine-tune the exact end-of-stroke position during commissioning to prevent overtravel and crush damage to expensive tooling.
Variable End Stops
Use the rear stopper screw to set precise mechanical limits for heavy pressing or positioning tasks requiring 3927 N of force.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-30 the Right Cylinder?
Select this 100 mm bore when a smaller 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the thrust for your setup, or step up here from an 80 mm if your application requires moving heavier jigs. The adjustable stroke is ideal for applications needing variable end-stops during machine setup, avoiding the need to swap out a fixed-stroke SAI cylinder. To replace an ISO 15552 cylinder, match the 100 mm bore, 75 mm stroke, -30 adjustment, PT port thread, and desired mounting hardware.
Because the stroke is under 300 mm, side-load stress on the 25 mm rod is manageable, but an external guide should still be used for heavy off-center loads. Operating speed ranges from 30-800 mm/s, and since this model lacks a magnet, position sensing via CMSE or DMSE switches is not supported without modification.
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 SAIJ100BX75-30 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to mechanically shorten the 75 mm nominal stroke by up to 30 mm, creating a usable travel window of 45-75 mm. It functions as a travel stop for end-position tuning and does not lock the load without air pressure.
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