Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50
The AirTAC SAIJ100X350-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 350mm travel that can be dialed back by up to 50mm, creating a precise 300-350mm usable window for fine-tuning end positions during commissioning. Delivering 7068N of push force at 0.9MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and pairs with PT tapered port threads.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It is important to note that the rear adjuster acts strictly as a mechanical stop to set deceleration and travel limits; it does not hold the load without live air pressure. For position holding without continuous pneumatic supply, an external rod lock or the AirTAC SAIL series is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 350 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 SAIJ100BX350-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×350 | 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 SAIJ100BX350-50 Is Used
Machine Changeover
Dial in the 300-350mm travel window during product size changes to set new end positions without machining new stopper blocks.
End-Position Tuning
Fine-tune the exact retract distance at commissioning to perfect tooling alignment, using the rear screw instead of external shims.
Heavy-Duty Positioning
Leverage the 7068N push force at 0.9MPa to move heavy pallets or fixtures while retaining the ability to trim the stroke by up to 50mm.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-50 the Right Cylinder?
Choose this 100mm bore when an application requires substantial thrust, such as 5497N at 0.7MPa, but might need a 90mm bore if lower force is acceptable or a 125mm bore if 8590N at 0.7MPa is required. The adjustable 300-350mm travel window is ideal for product changeovers on a line, allowing operators to dial in the exact end-stop without swapping cylinders or adding external physical stops. When replacing an ISO 15552 cylinder, match the 100mm bore, 350mm stroke, PT port threads, and desired mounting accessory.
Because the 350mm stroke is significant, the 25mm piston rod will experience higher deflection under side loads. Even with the robust M20x1.5 rod thread, an external guide rail should be used to support the load and prevent premature seal wear. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ100BX350-50 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the nominal 350mm down to 300mm. It sets the deceleration point but does not lock or hold the load without live air pressure.
At 0.9MPa it provides 7068N of push force and 3681N of pull force. At 0.5MPa the push force is 3927N.
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