This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X500S, 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 SI100X500S
The AirTAC Airtac SI100 Standard Cylinder SI100X500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X500S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X500S
- 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 SI100X500S
The AirTAC SI100X500S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 500mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X500S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The family adds SAIL, SAIF, and BSAI lock variants the SI lacked. Rod options include SUS420J2 or SUS304, and the -S magnet supports CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100X500S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X500S |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100X500S 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 SAI100X500S 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 SI100X500S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100X500S Is Used
Heavy Press Staging
Ideal for positioning heavy metal blanks at press infeed stations, utilizing the 3927N push force to shift substantial mass into the tooling zone.
Pallet Diversion
The 500mm stroke provides the extended reach needed to divert large pallets across wide transfer lines without requiring complex linkages.
Vertical Lift Gates
Provides the raw thrust required to raise and lower heavy material handling gates, safely operating within the 2356N working load limit.
Replacing the Airtac SI100 Standard Cylinder SI100X500S with the SAI100X500S
To replace the SI100X500S, order the SAI100X500S. Verify the ISO 15552 mounting interface, G1/2 port, M20x1.5 rod thread, and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors. Sizing both ways: the 100mm bore yields 5497N at 0.7MPa, while an 80mm bore yields 2513N at 0.5MPa. For the 500mm stroke, use external guides to prevent rod-bending side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X500S
- ✓ 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 SI100X500S FAQ
Yes, the AirTAC SI100X500S is discontinued. The direct replacement is the SAI100X500S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 500mm stroke, G1/2 port, and mounting interface, so it fits existing fixtures directly.
The 100mm bore delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and a theoretical max of 801kgf at 1.0MPa. Operating speed is 30-800mm/s. It uses a G1/2 port and a 25mm rod.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X500S replacement — usually within 7-8 hours.