Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 450mm 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
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75
The AirTAC SAIJ100X450-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel within a 375-450 mm window. This built-in stopper screw lets you dial in the exact end position during commissioning or product changeovers without adding external stops or swapping the cylinder. Belonging to the 100 mm bore class, it generates 3927 N of push force and 3681 N of pull force at 0.5 MPa, making it suited for heavier handling tasks.
This specific SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Remember that the rear adjuster acts only as a travel stop to set deceleration points; it does not hold the load without live air pressure, so a SAIL or BSAI lock cylinder is required for fail-safe holding.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAIJ100BX450-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SAIJ100BX450-75 Is Used
Variable Positioning Stops
Set precise retract end-points for multi-format machining operations without physically remounting the actuator.
Product Changeover
Quickly adjust the 375-450 mm travel window to accommodate different package sizes on a packaging line.
Machine Setup Tuning
Fine-tune the approach distance of heavy tooling during initial commissioning to prevent crash damage.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX450-75 the Right Cylinder?
Choose this 100 mm bore when a 80 mm bore (delivering 2513 N push at 0.5 MPa) is insufficient for your tooling weight, but a 125 mm bore (6136 N at 0.5 MPa) would be physically oversized. The 75 mm adjustment range is ideal for machinery that processes multiple product sizes, allowing the retract distance to be modified on the fly. When matching this for an ISO 15552 replacement, verify the 450 mm stroke, 75 mm adjustment, G1/2 port, PT thread, and basic mounting footprint. Because the stroke is 450 mm, the 25 mm rod needs an external guide to prevent excessive side-loading on the long unsupported travel.
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 SAIJ100BX450-75 FAQ
The rear adjuster acts as a mechanical stop, allowing you to shorten the nominal 450 mm stroke by up to 75 mm, resulting in a usable travel window of 375-450 mm. It sets the end position but does not lock the load without air pressure.
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.
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