Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-75S 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 SAIJ100X270-75S
The AirTAC SAIJ100X270-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 5497N of push force at 0.7 MPa. By integrating a 75 mm adjustment mechanism, this unit allows you to fine-tune the effective travel anywhere within a 195 to 270 mm window. This built-in flexibility eliminates the need to physically swap out cylinders when adapting to new product dimensions on the line.
It features a carbon steel piston rod and a PT tapered port, while the extruded aluminum barrel incorporates sensor grooves on both sides for CMSE and DMSE switches. The rear adjuster acts purely as a travel stop to set the end position and does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-75S |
|---|---|
| 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 SAIJ100X270-75S
| 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 SAIJ100X270-75S Is Used
Variable End-Position Stops
Dial in the exact retraction point within the 195-270 mm window during machine setup without adding external mechanical stops.
Product Size Changeover
Quickly adapt a packaging line to handle different carton lengths by trimming the stroke back up to 75 mm on the fly.
Commissioning Fine-Tuning
Perfect the final end-of-stroke deceleration during initial installation by adjusting the rear screw rather than repositioning the whole cylinder.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X270-75S the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust, such as 5497N at 0.7 MPa, but anticipate frequent end-position adjustments. If your application requires less force, stepping down to an 80 mm bore yields 3518N at 0.7 MPa. The adjustable stroke is ideal for commissioning fine-tunes and product-size changeovers, preventing the downtime of swapping a fixed-stroke SAI cylinder. For true load-holding without continuous air pressure, select a SAIL or BSAI model instead, as the SAIJ adjuster is only a stop.
To match this ISO 15552 cylinder for a replacement, verify the 100 mm bore, 270 mm stroke, 75 mm adjustment, PT port, and the -S magnet. Because the 270 mm stroke creates a long lever arm, ensure you use an external guide to handle side loads and protect the 25 mm rod thread.
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 SAIJ100X270-75S FAQ
The rear adjuster allows you to shorten the nominal 270 mm stroke by up to 75 mm. This provides a usable travel window of 195 to 270 mm, enabling precise end-position tuning without changing the cylinder.
At 0.7 MPa operating pressure, the SAIJ100X270-75-S generates a push force of 5497N and a pull force of 3681N.
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