Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 270mm 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
- Stroke270 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S
The AirTAC SAIJ100X270-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N push force at 0.5 MPa and features a SUS304 stainless steel rod. By turning the rear stopper screw, you unlock a usable travel window of 195-270mm, enabling precise end-position tuning without swapping hardware.
This adjustable-stroke model includes a magnet for CMSE and DMSE sensors, utilizing electronic solid-state or reed switches for position feedback. The extruded aluminum barrel maintains standard ISO 15552 mounting dimensions, while the adjustable stopper simply acts as a travel end-deceleration point, not a load lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 270 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 SAIJ100BX270-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | 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 SAIJ100BX270-75S Is Used
Product Size Changeovers
Quickly reconfigure the 195-270mm stroke window on packaging lines handling different carton lengths without changing the cylinder.
End-Position Tuning
Fine-tune the exact retraction point during machine commissioning to prevent crashes, using the rear stopper rather than adding shims.
Variable End-Stop Forming
Adjust the mechanical stop on the fly for metal-forming presses that require different material depths per batch.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX270-75S the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder (providing 2513N push at 0.5MPa) lacks thrust, but a 125mm bore is excessive. The 75mm adjustment range is perfect for machines processing varying product sizes, allowing operators to dial in the exact 195-270mm travel during changeovers rather than installing fixed external stops. Because the stroke is 270mm, ensure an external guide supports the load to prevent excessive side-loading on the SUS304 rod.
For an exact ISO 15552 replacement, match the 100mm bore, 270mm stroke, PT tapered port thread, and -S magnet. Remember that the rear adjuster only sets the end position; it cannot hold a load without live air. For true load-holding, select an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ100BX270-75S FAQ
At 0.5 MPa, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster screw lets you trim the nominal 270mm stroke back by up to 75mm, creating a usable travel window of 195-270mm. This stopper only sets the travel end and does not lock the load without air pressure.
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