Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S
The AirTAC SAIJ100X275-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 7068N of push force at 0.9 MPa. The integrated -20 mm adjustment mechanism allows you to trim the effective travel back from the 275 mm nominal stroke, providing a fine-tuned 255 to 275 mm usable window to dial in final end positions during commissioning.
This unit features a carbon steel piston rod and a PT tapered port thread. The -S magnet enables position sensing with AirTAC CMSE reed or DMSE solid-state switches fitted into the dual-side sensor grooves. Because the 275 mm stroke is relatively long for this 100 mm bore, external guiding is recommended to prevent excessive side-loading on the rod and M20x1.5 rod thread.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAIJ100X275-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X275-20S Is Used
Machine Commissioning
Dial in the exact 255 to 275 mm end position during setup without adding external stops.
Product Changeover
Quickly adjust the rear stop to accommodate varying package sizes on a packaging line.
Variable End Stops
Fine-tune the retract distance on the fly for precise positioning of heavy actuators.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X275-20S the Right Cylinder?
Select this adjustable model over a fixed-stroke SAI when a machine requires variable end-stops for rapid product-size changeovers without physically swapping cylinders. If you need less force, stepping down to an 80 mm bore yields 4523N push at 0.9 MPa; if your application demands more thrust, moving up to a 125 mm bore provides 11045N.
For an exact ISO 15552 replacement, match the 100 mm bore, 275 mm stroke, 20 mm adjustment, PT port, and -S magnet. Note that the rear adjuster acts only as a travel stop and relies on the variable air cushions for end-deceleration; it does not lock or hold the load. For true load-holding without live air pressure, select an SAIL or BSAI cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100X275-20S FAQ
The rear adjuster acts as an external stop that shortens the effective travel. For this model, the 275 mm nominal stroke can be dialed back by up to 20 mm, giving an adjustable travel window of 255 to 275 mm.
At 0.9 MPa operating pressure, the SAIJ100X275-20-S provides 7068N of push force and 6647N of pull force. It operates at speeds between 30 and 800 mm/s.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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