Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-100S 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 SAIJ80X275-100S
The AirTAC SAIJ80X275-100-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 175 to 275 mm, allowing you to dial back the stroke by up to 100 mm during commissioning. Equipped with a G3/8 port and a 25 mm carbon steel rod, it delivers 2513 N of pull force at 0.5 MPa.
This unit includes a magnet for CMSE and DMSE sensors, with sensor grooves machined on both sides of the extruded aluminum barrel. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops, while the integrated air cushions handle deceleration.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-100S |
|---|---|
| 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 SAIJ80X275-100S
| 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 SAIJ80X275-100S Is Used
Product Changeovers
Dial in the exact 175 to 275 mm travel window on packaging lines without swapping hardware during format size changes.
End-Stop Tuning
Use the rear mechanical stop to precisely set the retract position during machine commissioning for optimal alignment.
Variable Positioning
Adjust the effective stroke on automated assembly stations to accommodate multiple part lengths on the same line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X275-100S the Right Cylinder?
Choose this 80 mm bore when your application requires higher thrust than a 63 mm cylinder (which provides 1402 N pull at 0.5 MPa) but does not need the full 3681 N pull of a 100 mm bore. The 100 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, eliminating the need to physically swap cylinders for varying travel distances. For strokes of 275 mm or longer, an external guide is recommended to prevent excessive side-loading on the rod.
To match this ISO 15552 replacement, use a bore of 80, stroke 275, adjustment 100, PT tapered port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that this cylinder does not hold loads without live air pressure; for true load-holding, consider the SAIL or BSAI series.
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 SAIJ80X275-100S FAQ
The rear adjuster is a mechanical stop that lets you shorten the effective stroke by up to 100 mm, creating a usable travel window of 175 to 275 mm. It sets the end position but does not lock or hold the load without continuous air pressure.
At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
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