This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X63S, 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 SI100X63S
The AirTAC Airtac SI100 Standard Cylinder SI100X63S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 63mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X63S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke63 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X63S
- 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 SI100X63S
The AirTAC SI100X63S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 63mm stroke, delivering 3927 N push force at 0.5 MPa. AirTAC replaced it with the SAI100X63S. This direct upgrade retains the exact ISO 15552 mounting interface, G1/2 port, and output force, fitting existing fixtures seamlessly.
The SAI features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X63S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X63S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X63S |
| Bore size | Ø100 mm |
| Stroke | 63 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 SAI100X63S 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 SAI100X63S 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 SI100X63S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×63 | 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 SI100X63S Is Used
Heavy Press Operations
Ideal for driving heavy stamping or press fixtures requiring substantial thrust, utilizing the 3927 N push force at 0.5 MPa to form or seat rigid components.
Pallet Diverting
Provides robust actuation for heavy-duty pallet stops and diverters on automated lines, where the G1/2 port ensures rapid cycling despite the large bore.
Replacing the Airtac SI100 Standard Cylinder SI100X63S with the SAI100X63S
To replace the SI100X63S, order the SAI100X63S. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), G1/2 port thread (PT/G/NPT), and the -S magnet. The 100mm bore yields 3927 N push at 0.5 MPa; if undersizing, a 80mm bore gives 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for held loads, or specify an SAIL/BSAI lock variant. Because this is a 63mm stroke under 300mm, side-load rod-bending is minimal, but ensure front-end alignment to prevent seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X63S
- ✓ 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 SI100X63S FAQ
Yes, the SI100X63S is discontinued. The direct replacement is the AirTAC SAI100X63S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 63mm stroke, G1/2 port, and mounting interface, so it drops directly into existing fixtures.
The bore is 100mm with a G1/2 air port and a 25mm rod. Theoretical forces 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X63S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X63S replacement — usually within 7-8 hours.