This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X502S, 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 SI100X502S
The AirTAC Airtac SI100 Standard Cylinder SI100X502S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 502mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X502S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke502 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X502S
- 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 SI100X502S
The AirTAC SI100X502S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 502mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X502S. This direct upgrade retains the exact interface, bore, stroke, force and mounting, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X502S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X502S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X502S |
| Bore size | Ø100 mm |
| Stroke | 502 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 SAI100X502S 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 SAI100X502S 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 SI100X502S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×502 | 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 SI100X502S Is Used
Heavy Press Clamping
Applies the 3927N push force at 0.5MPa to secure heavy metal components during machining operations.
Pallet Diversion
Uses the 502mm stroke to push heavy pallets sideways onto parallel conveyor lines without external guides.
Replacing the Airtac SI100 Standard Cylinder SI100X502S with the SAI100X502S
To replace the SI100X502S, order the SAI100X502S direct. Confirm the ISO 15552 mounting interface, 100mm bore, 502mm stroke, G1/2 port (PT/G/NPT threads), and your mounting accessory. Because this is a nonstandard 502mm stroke exceeding the 500mm standard range, it is custom-built; ensure external guides are used to prevent rod-bending side loads over this long distance. Sizing both ways: a neighbouring 80mm bore gives 2513N [email protected], while a 125mm bore yields 6136N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X502S
- ✓ 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 SI100X502S FAQ
Yes, the SI100X502S is discontinued. The direct replacement is the SAI100X502S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 502mm stroke, G1/2 port, output force and mounting interface.
The 100mm bore features a G1/2 port. Force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X502S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X502S replacement — usually within 7-8 hours.