Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-75 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 SAIJ100X350-75
The AirTAC SAIJ100X350-75 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 backward by up to 75 mm, yielding a usable travel window of 275 to 350 mm. This allows precise end-position calibration during commissioning without swapping hardware. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads with a 25 mm carbon steel rod and M20x1.5 thread.
Because the 350 mm stroke is relatively long, the robust 25 mm rod diameter helps manage bending stress, though an external guide is still recommended for unsupported loads. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic switches if needed. The rear adjuster acts strictly as a mechanical stop to set the travel end and relies on the integrated air cushions for deceleration; it does not lock the load without continuous air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-75 |
|---|---|
| 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 SAIJ100X350-75
| 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 SAIJ100X350-75 Is Used
Product Size Changeovers
Dial in the 275-350 mm travel window during format changeovers to accommodate different product lengths without physically swapping the cylinder.
Heavy Load Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy actuators or workpieces, using the rear stop to dial in the exact final position.
Machine Commissioning
Fine-tune the end-of-stroke position during initial machine setup to resolve mechanical timing variances without machining custom spacer blocks.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-75 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, such as the 3927 N push force at 0.5 MPa or 7068 N at 0.9 MPa. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, while moving up to a 125 mm bore provides 6136 N. The adjustable stroke is ideal for production lines running multiple product sizes, as the 275-350 mm travel window can be reconfigured during changeovers without adding external stopper blocks.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 350 mm stroke, PT tapered port threads, and mounting choice. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options. For load-holding without live air pressure, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the adjuster. Given the 350 mm stroke, ensure adequate external guiding to prevent excessive side loading on the rod.
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 SAIJ100X350-75 FAQ
At 0.5 MPa, the 100 mm bore provides 3927 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 350 mm nominal stroke by up to 75 mm, creating a usable travel window of 275 to 350 mm. It sets the end position but does not lock the load without continuous air pressure.
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