Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75
The AirTAC SAIJ100X280-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 280 mm stroke that can be dialed back by up to 75 mm, creating a precise 205-280 mm usable travel window for fine-tuning end positions during commissioning. In this configuration, it generates 5497 N of push force and 3681 N of pull force at 0.7 MPa.
This specific SKU is built with a SUS304 stainless steel rod (option B) for superior corrosion resistance and features PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides, though this unit is supplied without a magnet. The rear adjuster acts purely as a travel stop to set deceleration points, not as a lock, and the cylinder relies on live air to hold position.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 280 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 SAIJ100BX280-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×280 | 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 SAIJ100BX280-75 Is Used
Product Changeover
Dial in the 205-280 mm stroke window during line format changes to accommodate different package lengths without replacing hardware.
End-Stop Calibration
Use the 75 mm rear adjuster to fine-tune the exact retraction point during machine commissioning, avoiding the need for external shims.
Heavy Pressing
Leverage the 5497 N push force at 0.7 MPa for heavy-duty pressing or forming tasks requiring precise, adjustable end-positioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX280-75 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires heavy thrust—up to 5497 N at 0.7 MPa—that a 80 mm bore (3518 N) cannot provide, but a 125 mm bore (8590 N) would overpower. The 75 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, allowing operators to set variable end stops without swapping the cylinder or adding external stopper blocks.
If your machine needs to hold a load statically without continuous air pressure, note that the SAIJ rear adjuster and air cushions function only as travel stops, not brakes. For fail-safe load holding, select an AirTAC SAIL or BSAI series cylinder instead. Because this is a 280 mm stroke, ensure proper external guiding to prevent excessive side-loading on the SUS304 rod, and confirm your mounting choice falls within the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ100BX280-75 FAQ
At 0.7 MPa operating pressure, this 100 mm bore cylinder generates 5497 N of push force and 3681 N of pull force. It can achieve a maximum push force of 7068 N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 280 mm down to 205 mm. It sets the travel end and deceleration point, but it does not lock the load; live air pressure is required to hold position.
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