Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-20S 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 SAIJ100X350-20S
The AirTAC SAIJ100X350-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 330-350 mm usable travel window, allowing you to dial back the nominal 350 mm stroke by up to 20 mm during commissioning. Equipped with a -S magnet, it supports AirTAC CMSE reed and DMSE electronic sensors for precise position feedback.
Delivering 3927 N of push force at 0.5 MPa, this 100 mm bore actuator uses a G1/2 port and a 25 mm carbon steel rod with an M20x1.5 thread. The extruded aluminum barrel incorporates sensor grooves on both sides, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-20S |
|---|---|
| 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 SAIJ100X350-20S
| 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 SAIJ100X350-20S Is Used
Machine Setup & Changeover
Fine-tune the 330-350 mm retract end-position on the fly during product size changeovers, eliminating the need to physically swap out actuators or add external mechanical stops.
Variable End-Stop Positioning
Dial in the exact stroke length required for multi-tier pressing or forming operations, using the rear adjuster to perfectly trim the travel within the 20 mm window.
Adjustable Diverting Stroke
Modify the actuation reach on sorting gates and diverters to handle varying package sizes, relying on the 3927 N push force to move loads efficiently.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X350-20S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your application requires variable end-position tuning or frequent product changeovers without swapping cylinders. The rear stopper screw fine-tunes the retract stroke, but note that the adjuster and air cushions act only as travel stops—they do not hold the load without live air. For load-holding without pressure, consider an external rod lock, or AirTAC SAIL or BSAI cylinders.
Because the 350 mm stroke is relatively long, the 25 mm rod and M20x1.5 thread provide robust support, but an external guide is still recommended to prevent excessive side loading. To match an ISO 15552 replacement, verify the 100 mm bore, 350 mm stroke, 20 mm adjustment, PT tapered port threads, and the -S magnet requirement.
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 SAIJ100X350-20S FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster acts as a stopper that allows you to shorten the effective stroke by up to 20 mm, creating a 330-350 mm travel window. It only sets the end position and does not lock or hold the load without continuous air pressure.
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