This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X105S, 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 SI100X105S
The AirTAC Airtac SI100 Standard Cylinder SI100X105S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 105mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X105S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X105S
- 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 SI100X105S
The AirTAC SI100X105S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 105mm stroke, delivering 3927 N push force at 0.5 MPa through its G1/2 port. AirTAC replaced this legacy unit with the SAI100X105S. This current-production direct maintains the exact ISO 15552 mounting-interface dimensions, bore, stroke, output force, and port size, fitting existing fixtures perfectly.
The SAI upgrade features a redesigned piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces variants the SI lacked, such as the SAIL air-released lock and BSAI clamp-lock, while the original -S magnet supports CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X105S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X105S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X105S |
| Bore size | Ø100 mm |
| Stroke | 105 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 SAI100X105S 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 SAI100X105S 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 SI100X105S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×105 | 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 SI100X105S Is Used
Heavy Press Operations
Drives demanding press and stamping tasks requiring up to 7068 N of thrust at 0.9 MPa within compact machinery frames.
Pallet Handling
Indexes heavy loaded pallets on conveyor lines, utilizing the 200 kg vertical lift capacity to lift and transfer goods reliably.
Automated Clamping
Secures large workpieces during machining operations, relying on the 100mm bore's rigid extruded aluminum profile to resist deflection.
Replacing the Airtac SI100 Standard Cylinder SI100X105S with the SAI100X105S
To replace the SI100X105S, order the SAI100X105S and verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), G1/2 port thread (PT, G, or NPT), and the -S magnet requirement. Sizing checks: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore provides 6136 N, offering alternatives if your fixture allows changes. Note that a plain SAI cylinder does not hold load on air loss; the adjustable 36mm cushions only decelerate near stroke ends. For load-holding, use the SAIL or BSAI lock variants, or an external pilot check valve. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X105S
- ✓ 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 SI100X105S FAQ
Yes, the SI100X105S is discontinued. The direct replacement is the AirTAC SAI100X105S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 105mm stroke, G1/2 port, and mounting interface, so it drops directly into existing fixtures.
The 100mm bore features a G1/2 air port and a 25mm piston rod. It delivers 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X105S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X105S replacement — usually within 7-8 hours.