Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX270-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 270mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100
The AirTAC SAIJ80X270-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 170 to 270 mm, allowing you to dial back the nominal stroke by up to 100 mm during machine setup.
This configuration 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 AirTAC CMSE reed and DMSE electronic sensors should position feedback be required later. The generous 100 mm adjustment range makes it exceptionally practical for lines running multiple product sizes.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 270 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX270-100 Is Used
Variable End-Position Tuning
Dial in the exact retract distance within the 170 to 270 mm window during commissioning to perfectly align stops without machining custom spacers.
Product Size Changeover
Quickly adapt a packaging or clamping station to different carton heights by adjusting the rear stopper up to 100 mm, minimizing machine downtime.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for reliable, high-force motion in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX270-100 the Right Cylinder?
Choose this 80 mm bore when an application demands high thrust that a 63 mm bore cannot provide, stepping up from 2182 N to 3518 N at 0.7 MPa. The 100 mm adjustment window is the primary draw here, enabling rapid product changeovers without physically swapping the cylinder or adding external mechanical stops. Because the 270 mm stroke is substantial, an external guide is recommended to prevent rod sag and manage side loads, as even the 25 mm diameter rod has limits on long unsupported spans.
When specifying a replacement, match the 80 mm bore, 270 mm stroke, 100 mm adjustment, PT thread port, and SUS304 rod material. Note that this SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. The rear adjuster acts solely as a travel stop and does not hold the load without live air; for fail-safe load holding, select an SAIL or BSAI cylinder.
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 SAIJ80 Adjustable Cylinder SAIJ80BX270-100 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 270 mm down to as little as 170 mm. It sets the travel end and deceleration point but does not lock or hold the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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