Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S
The AirTAC SAIJ100X300-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 280 to 300 mm. Delivering 5497 N of push force at 0.7 MPa, it is designed for heavy-duty positioning tasks. The extruded aluminum barrel features sensor grooves on both sides, and the integrated -S magnet supports position detection using AirTAC CMSE reed or DMSE electronic switches.
Instead of relying on fixed stops, the rear adjusting screw allows you to fine-tune the retract end-position at commissioning without swapping out the cylinder. The 25 mm carbon steel rod and M20x1.5 thread provide robust resistance to side loads, though at 300 mm of stroke, an external guide is still recommended for unsupported loads. This adjustable-stroke model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100X300-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100X300-20S Is Used
Product Changeover
Dial in the exact retract position within the 280-300 mm window during format size changes on packaging lines, eliminating the need to swap physical hard stops.
Machine Setup
Fine-tune the end-of-stroke position at commissioning to perfect timing sequences in heavy-duty automation, avoiding the cost of custom-length cylinders.
Heavy Positioning
Leverage the 5497 N push force at 0.7 MPa to move substantial masses into place while retaining the ability to trim the final 20 mm of travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-20S the Right Cylinder?
Choose this 100 mm bore when an application demands higher thrust than a neighboring 80 mm cylinder (which yields 3518 N push at 0.7 MPa), without stepping up to a larger 125 mm unit. The adjustable stroke is ideal for product changeovers on a line, allowing you to dial in the exact end-stop within the 280-300 mm window rather than machining new hard stops. For replacing an ISO 15552 cylinder, verify the 300 mm stroke, 20 mm adjustment, PT tapered port thread, and the required mounting accessory.
Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, neither will hold a load without live air pressure. If your setup requires true fail-safe load holding, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead of relying on the standard SAIJ adjuster.
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 SAIJ100X300-20S FAQ
At a 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 5197 N of pull force. It can deliver up to 7068 N push at 0.9 MPa.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective stroke by up to 20 mm. This creates a usable travel window of 280 to 300 mm, enabling fine end-position tuning without changing the cylinder.
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