Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-75 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 SAIJ100BX275-75
The AirTAC SAIJ100X275-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 200 to 275 mm. Delivering a robust 7068N of push force at 0.9 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This model allows operators to fine-tune end positions directly at commissioning or during product changeovers without adding external stops. The rear adjuster functions strictly as a travel stop and works alongside the standard air cushions at both ends to decelerate the load; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-75 |
|---|---|
| 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 SAIJ100BX275-75
| 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 SAIJ100BX275-75 Is Used
Machine Changeover
Dial in the exact end-stop during product size transitions on a packaging line without swapping out the entire actuator.
End-Position Tuning
Fine-tune the clamping travel window from 200 to 275 mm during commissioning to accommodate multi-part fixtures.
Variable End Stops
Adjust the rear mechanical stopper to set precise ejection distances for varying component widths on an assembly conveyor.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-75 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial thrust, such as 5497N at 0.7 MPa, and the flexibility to dial in a specific end-of-stroke position within a 75 mm range. If your force requirements are lower, stepping down to an 80 mm bore yields 4523N at 0.9 MPa, whereas moving up to a 125 mm bore provides 11045N. The adjustable nature of the SAIJ makes it preferable over a fixed-stroke SAI cylinder when machine setups frequently accommodate varying product sizes.
Because the 275 mm stroke exceeds 300 mm, ensure proper external guidance to prevent rod side-loading, despite the robust 25 mm rod diameter. When seeking an ISO 15552 replacement, match the 100 mm bore, 275 mm nominal stroke, 75 mm adjustment, PT port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that FB, CA, CB, and CR mounts are omitted from this adjustable variant.
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 SAIJ100BX275-75 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder generates a push force of 7068N and a pull force of 3681N. The maximum theoretical force at 1.0 MPa is 801 kgf.
The SAIJ100X275-75 features a rear adjusting screw that allows you to trim the effective stroke by up to 75 mm. This creates a usable travel window between 200 mm and 275 mm, enabling precise end-position tuning without changing the cylinder's physical mounting.
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