This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300SCB, 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 SI100X300SCB
The AirTAC Airtac SI100 Standard Cylinder SI100X300SCB 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 SAI100X300SCB, 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 → SAI100X300SCB
- 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 SI100X300SCB
The AirTAC SI100X300SCB is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 300mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X300SCB, retaining the same interface, force, and CB clevis mount.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SAI family adds SAIL, SAIF, and BSAI lock variants. Your -S magnet works with CS1-B/DS1-B switches, while the SAI uses current switches. Viton H seals raise temp to 150C.
Airtac SI100 Standard Cylinder SI100X300SCB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300SCB |
| 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 SAI100X300SCB 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 SAI100X300SCB 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 SI100X300SCB
| 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 SI100X300SCB Is Used
Heavy Material Forming
Drives large press dies and stamping fixtures where the 3927N push force at 0.5MPa is required to shape thick steel or aluminum blanks.
Large Clamp Actuation
Actuates robust machining clamps on CNC machining centers, providing reliable 3681N pull force to secure cast components during milling.
Replacing the Airtac SI100 Standard Cylinder SI100X300SCB with the SAI100X300SCB
To replace the SI100X300SCB, order the SAI100X300SCB. Verify the ISO 15552 interface, 100mm bore, 300mm stroke, G1/2 port, and CB clevis mounting. The -S magnet enables CS1-B/DS1-B sensors. Force output is 3927N push at 0.5MPa; if downsizing, a 80mm bore yields 2513N, while a 125mm bore yields 6136N. For the 300mm stroke, use an external guide to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300SCB
- ✓ 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 SI100X300SCB FAQ
Yes, the SI100X300SCB is discontinued. The direct replacement is the SAI100X300SCB. It shares the identical ISO 15552 mounting interface, 100mm bore, 300mm stroke, G1/2 port, and CB clevis mount, fitting directly into existing fixtures.
It features a G1/2 air port. The force ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300SCB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300SCB replacement — usually within 7-8 hours.