Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30S 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 SAIJ100BX275-30S
The AirTAC SAIJ100X275-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 245-275mm usable travel window, letting you dial back the 275mm nominal stroke by up to 30mm during commissioning without adding external stops. It delivers robust thrust, pushing 7068N and pulling 3681N at 0.9 MPa.
This variant includes a SUS304 stainless steel rod for corrosion resistance and a magnet for CMSE reed and DMSE electronic sensors. It uses PT tapered ports (G1/2) and supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30S |
|---|---|
| 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 SAIJ100BX275-30S
| 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 SAIJ100BX275-30S Is Used
Product Changeovers
Dial in the exact 245-275mm retraction depth on packaging lines when switching to a new carton size, avoiding physical cylinder swaps.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to perfectly time a pressing operation without machining external stopper blocks.
Variable End Stops
Adjust the retract distance on the fly for diverter arms handling varying package lengths on a conveyor system.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX275-30S the Right Cylinder?
Choose this 100mm bore when your application requires substantial force (7068N push at 0.9 MPa) alongside flexible end-position tuning. If you need less force, stepping down to an 80mm bore yields 4523N push at 0.9 MPa. Select the adjustable SAIJ over a fixed SAI when machine setups involve frequent product changeovers that require slightly different retraction depths.
Because the 275mm stroke exceeds 300mm? No, but it is long enough that side-load management is critical. Ensure you use an external guide to support the load, as the 25mm rod and M20x1.5 thread handle side loads but cannot prevent binding on long unsupported travels. For load-holding without continuous air, use an external rod lock or pilot-operated check valve, as the SAIJ adjuster is not a brake.
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 SAIJ100BX275-30S FAQ
The rear adjuster screw lets you shorten the 275mm nominal stroke by up to 30mm, creating a 245-275mm travel window. It acts as a mechanical stop to set the end position and does not lock the load without live air pressure.
At 0.9 MPa, it provides a push force of 7068N and a pull force of 3681N. The maximum push force at 1.0 MPa is 801 kgf.
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Standard models usually ship in 3-4 days.
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