Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30
The AirTAC SAIJ100X275-30 is a double-acting, single-rod profile cylinder with a rear mechanical stopper that enables precise end-position tuning at commissioning. Based on a 275 mm nominal stroke, the built-in adjuster allows you to dial the travel back by up to 30 mm, creating a 245-275 mm usable window without adding external stops. Delivering 3927 N of push force at 0.5 MPa, this ISO 15552 dimensionally interchangeable unit handles heavy positioning tasks with ease.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. Because the stroke exceeds 250 mm, the 25 mm rod diameter provides robust support, though an external guide is still recommended for heavy side loads.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100BX275-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SAIJ100BX275-30 Is Used
Machine Changeover
Fine-tune the 245-275 mm travel window during product size changeovers without physically replacing the cylinder or bolting on external stopper blocks.
End-Stop Calibration
Dial in the exact retract position during commissioning using the rear adjuster, absorbing mechanical tolerance variations on heavy press equipment.
Heavy Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy pallets or fixtures, relying on the SUS304 rod for durability in demanding environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30 the Right Cylinder?
Select this 100 mm bore when a 63 mm bore (1559 N push at 0.5 MPa) is insufficient, but you want to avoid stepping up to a 125 mm body (6136 N). The adjustable rear screw is ideal for product changeovers where the exact end-of-stroke varies by 30 mm or less, preventing the need to physically swap a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify the 100 mm bore, 275 mm stroke, 30 mm adjustment, PT ports, SUS304 (B) rod, and the required mounting style from the SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
Keep in mind the rear stopper only decelerates and sets the travel end; it does not hold the load without live air. For dead-stop holding, consider an AirTAC SAIL or BSAI lock cylinder. Also, for any stroke of 300 mm or more, always support the load with an external linear guide to prevent rod bending.
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 SAIJ100BX275-30 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. If you increase pressure to 0.7 MPa, the push force rises to 5497 N.
The rear adjuster acts as a mechanical stop that lets you trim the 275 mm nominal stroke back by up to 30 mm, giving a usable travel window of 245-275 mm. It sets the end position but does not lock the load without live air pressure.
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