This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X630S, 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 SI100X630S
The AirTAC Airtac SI100 Standard Cylinder SI100X630S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 630mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X630S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke630 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X630S
- 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 SI100X630S
The AirTAC SI100X630S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 630mm stroke. Delivering 3927 N push force at 0.5 MPa, it features an extruded aluminum barrel, a G1/2 port, and a M20x1.5 rod thread. Because this SI unit is end-of-life, you should order the direct replacement: SAI100X630S. The SAI model shares the same ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting existing fixtures perfectly.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Your SI100X630S includes a piston magnet for legacy CS1-B/DS1-B sensors, whereas the SAI replacement family uses current AirTAC switches. If you need load holding on air loss, the SAI family adds SAIL and BSAI lock variants that the SI line lacked.
Airtac SI100 Standard Cylinder SI100X630S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X630S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X630S |
| Bore size | Ø100 mm |
| Stroke | 630 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 SAI100X630S 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 SAI100X630S 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 SI100X630S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×630 | 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 SI100X630S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets along a production line using the 630mm stroke, relying on external guides to prevent rod bending during transit.
Heavy Press Ejection
Ejects dense finished parts from a hydraulic press, utilizing the 3927 N push force to clear the mold area efficiently.
Replacing the Airtac SI100 Standard Cylinder SI100X630S with the SAI100X630S
To replace the discontinued SI100X630S, order the SAI100X630S. Confirm the ISO 15552 mounting interface, the 100mm bore, the 630mm stroke, the G1/2 port (available in PT, G, or NPT), and your mounting accessory (such as LB foot or TC trunnion). The -S suffix indicates a piston magnet, so specify it to ensure sensor compatibility. When sizing, consider neighboring bores: an 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. Note that a 630mm stroke increases the risk of rod bending under side loads, so use external guides to prevent premature seal wear. A plain cylinder does not hold load without live air; the cushion only decelerates. For secure holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X630S
- ✓ 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 SI100X630S FAQ
Yes, the SI100X630S is discontinued. The direct replacement is the SAI100X630S. It shares the same ISO 15552 mounting interface, 100mm bore, 630mm stroke, output force, and G1/2 port, so it fits your existing fixtures without modification.
The bore is 100mm with a G1/2 air port. The thrust ratings are 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X630S
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