This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI100 Standard Cylinder SI100X300
The AirTAC SI100 Standard Cylinder SI100X300 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X300, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X300
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI100 Standard Cylinder SI100X300
The AirTAC SI100X300 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 300 mm stroke. It delivers a thrust of 3927 N at 0.5 MPa through its G1/2 port. The direct replacement is the SAI100X300, matching the exact bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks a magnet and cannot accept position sensors.
Airtac SI100 Standard Cylinder SI100X300 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300 |
| 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X300 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAI100X300 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X300
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI100 Standard Cylinder SI100X300 Is Used
Heavy Press Clamping
Ideal for applying high clamping forces on heavy steel fabrications, utilizing the 3927 N thrust at 0.5 MPa to secure parts during welding or machining.
Large Package Diverting
Actuates heavy-duty diverters and sorting gates on high-throughput conveyor lines, moving substantial loads across the 300 mm stroke length.
Replacing the Airtac SI100 Standard Cylinder SI100X300 with the SAI100X300
To replace the SI100X300, order the SAI100X300 ensuring your ISO 15552 mounting interface, 100 mm bore, 300 mm stroke, G1/2 port (PT/G/NPT) and mounting accessory match. Because this unit lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. Sizing both ways: the 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. A plain cylinder drifts on air loss as cushions only decelerate; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. At 300 mm stroke, use external guides to prevent rod bending and side-load wear. The SAI family also offers the SAIF valve variant for bores up to 100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X300 FAQ
Yes, the AirTAC SI100X300 is discontinued. The direct replacement is the SAI100X300. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 300 mm stroke, output force, G1/2 port and mounting interface.
This double-acting cylinder features a G1/2 port. It provides a push force of 3927 N and a pull force of 3681 N at 0.5 MPa, 5497 N at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300 replacement — usually within 7-8 hours.