This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300SCA, 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 SI100X300SCA
The AirTAC SI100 Standard Cylinder SI100X300SCA 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 SAI100X300SCA, 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 → SAI100X300SCA
- 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 SI100X300SCA
The AirTAC SI100X300SCA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 300mm stroke. It delivers a push force of 3927 N at 0.5 MPa. AirTAC replaced this legacy unit with the SAI100X300SCA, a direct upgrade retaining the exact ISO 15552 mounting interface, CA clevis, G1/2 port, and output force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For load holding, note that standard cylinders drift without live air; the SAIL or BSAI lock variants are required for secure holding.
The original SI-SKU includes a piston magnet for CS1-B/DS1-B legacy sensors, while the SAI replacement family uses current AirTAC switches. You can also configure rod materials (carbon, SUS420J2, or SUS304) and high-temp Viton H seals up to 150 C.
Airtac SI100 Standard Cylinder SI100X300SCA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300SCA |
| 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 SAI100X300SCA 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 SAI100X300SCA 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 SI100X300SCA
| 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 SI100X300SCA Is Used
Heavy Press Clamping
Applies the 3927 N push force at 0.5 MPa to secure heavy automotive components during machining, utilizing the CA clevis for pivoting alignment.
Pallet Diversion
Extends the 300mm stroke to push heavy product pallets off a main conveyor line, requiring external guides to prevent rod bending.
Replacing the Airtac SI100 Standard Cylinder SI100X300SCA with the SAI100X300SCA
To replace the discontinued SI100X300SCA, order the SAI100X300SCA. Verify your existing fixture matches the ISO 15552 CA clevis mounting interface, 100mm bore, 300mm stroke, and G1/2 port. The SAI family adds variants the SI lacked, such as the SAIL air-released lock, SAIF built-in 4M valve, and BSAI clamp-lock. If sizing alternatives, the neighboring 80mm bore yields 2513 N push, while the 125mm bore yields 6136 N at 0.5 MPa. A plain cylinder does not hold load without live air; the cushion only decelerates. For secure load holding, specify SAIL, BSAI, or an external pilot check valve. Because the 300mm stroke is long, ensure external guides prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300SCA
- ✓ 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 SI100X300SCA FAQ
Yes, the AirTAC SI100X300SCA is discontinued. The direct replacement is the SAI100X300SCA. It shares the identical ISO 15552 mounting interface, 100mm bore, 300mm stroke, G1/2 port, and CA clevis, but features an upgraded piston seal for longer life.
The 100mm bore features a G1/2 port. Theoretical forces are: push 3927 N and pull 3681 N at 0.5 MPa, push 5497 N at 0.7 MPa, push 7068 N at 0.9 MPa, and a maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300SCA replacement — usually within 7-8 hours.