Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-40S 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 SAIJ100BX240-40S
The AirTAC SAIJ100X240-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a substantial 5497N of push force at 0.7 MPa, and its built-in 40mm adjustment screw creates a usable travel window between 200 and 240mm. This allows you to fine-tune the retract end position directly at the machine without adding external stops.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a magnetic piston (-S) for position sensing. The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses G1/2 ports and reaches operating speeds up to 800mm/s.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-40S |
|---|---|
| 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 SAIJ100BX240-40S
| 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 SAIJ100BX240-40S Is Used
Product Changeover Adjustment
Dial in the retract stroke by up to 40mm during packaging line format changes, accommodating different carton sizes without replacing the cylinder.
Press End-Position Tuning
Fine-tune the final contact position of a 5497N pressing assembly during commissioning to ensure precise material deformation without external shims.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for pressing or lifting tasks in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-40S the Right Cylinder?
Choose this 100mm bore when an 80mm bore (3518N push at 0.7 MPa) lacks the power for your heavy payload, but a 125mm bore is physically too large. The 40mm adjustable stroke is ideal for product changeovers, letting you dial in the exact end-stop without swapping the cylinder. For strokes of 300mm or more, you would need an external guide to prevent rod side-loading, but this 240mm stroke remains well within safe deflection limits.
When replacing an ISO 15552 cylinder, match the 100mm bore, 240mm stroke, 40mm adjustment, G1/2 PT port, and -S magnet. Remember that the rear adjuster acts only as a travel stop to decelerate the load; it does not hold the load without live air. For true pneumatic locking without pressure, consider the SAIL or BSAI series instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ100BX240-40S FAQ
At a standard 0.7 MPa operating pressure, this 100mm bore cylinder generates 5497N of push force and 5497N of pull force. It can reach a maximum of 7068N push force at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the effective stroke from 240mm down to a minimum of 200mm. This creates a 200-240mm travel window for fine-tuning the end position at commissioning, but it acts only as a stop and does not lock the load without live air.
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