Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20
The AirTAC SAIJ100X30-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 30mm stroke that can be dialed back by up to 20mm, yielding a usable travel window of 10-30mm for precise end-position tuning at commissioning. Delivering 3927N of push force at 0.5MPa, it handles robust actuation tasks with ease.
This model features a 25mm carbon steel piston rod and an M20x1.5 rod thread, offering high rigidity against side loads. It uses a PT G1/2 port and includes variable air cushioning at both ends to decelerate the load. The rear adjuster acts purely as a mechanical stop and does not hold the load without live air; for position holding without pressure, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAIJ100X30-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SAIJ100X30-20 Is Used
Machine Setup & Changeover
Fine-tune the 10-30mm travel window during product changeovers to set exact end-stops without physically replacing the cylinder or adding external stops.
Variable End-Stop Actuation
Dial in the precise retraction point for a 3927N process load, using the rear adjuster to compensate for mechanical tolerances during initial commissioning.
Heavy-Duty Positioning
Leverage the 100mm bore thrust and M20x1.5 rod thread to move heavy fixtures into place, relying on the rear stop to set the final position accurately.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X30-20 the Right Cylinder?
Choose this 100mm bore cylinder when an application requires substantial thrust—3927N at 0.5MPa or 5497N at 0.7MPa—alongside exact end-position tuning. If your force requirements are lower, stepping down to the 80mm bore yields 2513N at 0.5MPa. The adjustable stroke is ideal for machine setups requiring variable end-stops without swapping cylinders, unlike a fixed-stroke SAI model.
To match this ISO 15552 cylinder for replacement, verify the 100mm bore, 30mm nominal stroke, 20mm adjustment range, PT G1/2 port, and required mounting accessories. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the standard carbon steel rod and 25mm diameter provide inherent stiffness, long unsupported strokes still require an external guide.
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 SAIJ100X30-20 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The rear adjuster acts as a mechanical stop that allows you to trim the effective stroke back by up to 20mm from the 30mm nominal length, providing a usable travel window of 10-30mm. It sets the travel end but does not lock or hold the load without live air pressure.
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