Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40 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 SAIJ100BX350-40
The AirTAC SAIJ100X350-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 350 mm stroke that can be fine-tuned down by up to 40 mm, yielding a usable travel window of 310-350 mm. Delivering 5497 N of push force at 0.7 MPa, this 100 mm bore actuator handles demanding positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration utilizes a SUS304 stainless steel rod and PT tapered ports.
Because the adjuster acts purely as a mechanical stop at the retract end, it cannot hold a load without continuous live air pressure. For load-holding requirements without air, an external rod lock or a related SAIL pneumatic lock cylinder is required. The robust 25 mm rod and M20x1.5 rod thread provide excellent resistance to side loading, though at 350 mm of travel, maintaining an external guide is recommended for optimal performance.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40 |
|---|---|
| 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 SAIJ100BX350-40
| 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 SAIJ100BX350-40 Is Used
Product Changeover
Dial in the 310-350 mm travel window during production line format changes to accommodate different product sizes without replacing the actuator.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to achieve precise seating of heavy 100 mm bore components without external shims.
Heavy Material Handling
Leverage the 5497 N push force at 0.7 MPa to shift heavy payloads along a conveyor, relying on the external guide to manage side loads.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX350-40 the Right Cylinder?
Choose this 100 mm bore if your application requires substantial thrust, such as the 5497 N push force at 0.7 MPa or 7068 N at 0.9 MPa. If your force requirements are lower, stepping down to an 80 mm bore yields 3518 N at 0.7 MPa, while moving up to a 125 mm bore provides 8590 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers without swapping cylinders. Unlike a fixed-stroke SAI, the rear screw allows on-the-fly position tuning.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 350 mm stroke, 40 mm adjustment range, PT port threads, and SUS304 rod material. Note that this unit lacks a magnet for sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Operating speed ranges from 30-800 mm/s.
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 SAIJ100BX350-40 FAQ
At an operating pressure of 0.7 MPa, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster acts as a mechanical stop that shortens the effective stroke. For this SAIJ100X350-40, you can trim the nominal 350 mm stroke back by up to 40 mm, creating a usable travel window of 310-350 mm.
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