Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20
The AirTAC SAIJ100X240-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you trim the effective travel, providing a usable 220-240mm window from the 240mm nominal stroke. It delivers 5497N of push force at 0.7 MPa, making it suited for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This configuration uses a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The rear adjuster acts purely as a mechanical stop to fine-tune the end position at commissioning; it does not hold the load without live air pressure. For load-holding requirements, consider SAIL or BSAI variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAIJ100BX240-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SAIJ100BX240-20 Is Used
Machine Setup & Changeover
Dial in the exact retract position during commissioning or product size changes without machining new stopper blocks.
Variable End-Stop Positioning
Fine-tune the 220-240mm travel window to accommodate multiple product lengths on a single assembly line.
Heavy-Duty Forming
Leverage the 5497N push force at 0.7 MPa for pressing or holding applications while adjusting the end-stop to prevent over-travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-20 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when your application requires precise end-position tuning or frequent product changeovers without swapping the physical cylinder or adding external stops. The 20mm adjustment window allows on-the-fly refinement of the retract stroke. If you need less force, stepping down to a bore 63 variant yields 2182N at 0.5 MPa, but this 100mm bore provides robust power for heavier fixtures.
When ordering, confirm the 100mm bore, 240mm stroke, 20mm adjustment, PT port threads, and the SUS304 stainless steel rod. Note that SAIJ supports a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Since the stroke is under 300mm, side-load concerns are minimal, but always ensure proper guiding for long unsupported loads.
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 SAIJ100BX240-20 FAQ
At an operating pressure of 0.7 MPa, this 100mm bore cylinder generates 5497N of push force and 3681N of pull force. It can deliver a maximum of 801 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 20mm, providing a usable travel window of 220-240mm. It only sets the end position and does not lock or hold the load without continuous air pressure.
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