Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-50 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 SAIJ100BX240-50
The AirTAC SAIJ100X240-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 3927N of push force at 0.5 MPa and provides a usable travel window of 190 to 240 mm, allowing you to dial back the nominal 240 mm stroke by up to 50 mm. This built-in adjustability enables precise end-position tuning at commissioning or during product changeover without swapping out the entire cylinder.
This model features a SUS304 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR foot and pivot options found on some standard variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-50 |
|---|---|
| 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 SAIJ100BX240-50
| 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 SAIJ100BX240-50 Is Used
Machine Changeover
Quickly fine-tune the retract end position by up to 50mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders or reposition external hard stops.
Assembly Calibration
Dial in the exact 190 to 240mm travel distance during initial commissioning to perfect pressing forces or alignment without disassembling the pneumatic circuit.
Variable End Stops
Provide a mechanical buffer for varying material thicknesses in automated clamping stations, using the rear adjuster to safely shorten the effective stroke on demand.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-50 the Right Cylinder?
Choose this 100mm bore cylinder when an application requires substantial thrust, such as 5497N at 0.7 MPa, combined with variable end-stop positioning. If your force requirements are lower, stepping down to an 80mm bore yields 2513N at 0.5 MPa, whereas moving up to a 125mm bore provides 6136N. The adjustable stroke is specifically beneficial for machine setups needing fine-tuning without adding external stops. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air pressure; for true load-holding, consider an external rod lock or pilot-operated check valve. To replace this unit, match the 100mm bore, 240mm stroke, 50mm adjustment, PT port, and the chosen mounting hardware.
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 SAIJ100BX240-50 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 5497N.
The rear adjusting screw acts as an external stopper that lets you shorten the effective travel from the nominal 240mm down to as little as 190mm. It only sets the travel end and deceleration; it does not lock or hold the load without continuous air pressure.
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