Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30
The AirTAC SAIJ80X275-30 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and features a 245 to 275 mm usable travel window, letting you dial in the exact retract position without swapping hardware.
This bore utilizes a G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread, providing solid resistance against side loads. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU is configured without a magnet.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 275 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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80X275-30 Is Used
Machine Changeover
Quickly fine-tune the 245-275 mm retract position when adapting machinery to run slightly different product lengths.
Variable End Stops
Set precise stopping points for heavy pallets or workpieces without physically replacing the cylinder or adding external hard stops.
Fixture Positioning
Leverage the 2513N thrust to clamp parts securely while making minute adjustments to the final clamping depth at commissioning.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-30 the Right Cylinder?
Select this 80 mm bore when an application requires more thrust than a 63 mm cylinder (1559N at 0.5 MPa) but less than a 100 mm bore (3927N at 0.5 MPa). The 30 mm adjustment range is perfect for machine setups requiring variable end stops during product changeovers, eliminating the need to bolt on external stops or buy a fixed-stroke SAI cylinder.
Because the 275 mm stroke is substantial, ensure adequate external guiding to prevent rod binding. Remember that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. This model uses a PT tapered port thread and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ80X275-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513N of push force and 2268N of pull force. It can reach a maximum push force of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm. This creates a usable travel window of 245 to 275 mm, enabling precise end-position tuning at commissioning without changing the cylinder.
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