This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X180S, 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 SI100X180S
The AirTAC SI100 Standard Cylinder SI100X180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X180S
- 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 SI100X180S
The AirTAC SI100X180S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 180 mm stroke, delivering 3927 N push force at 0.5 MPa. AirTAC replaced it with the SAI100X180S, a direct upgrade sharing the exact ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread. The SAI family introduces variants the SI lacked, including the SAIL air-released lock, SAIF integrated 4M valve, and BSAI clamp-lock.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Your SI100X180S includes a magnetic piston for legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X180S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X180S |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAI100X180S 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 SAI100X180S 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 SI100X180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SI100X180S Is Used
Heavy Stamping Press
Drives large platens and stamping dies requiring 3927 N push force at 0.5 MPa with stable 180 mm travel.
Bulk Material Diversion
Actuates heavy lane diverters and sorting gates on high-throughput packaging conveyors.
Replacing the Airtac SI100 Standard Cylinder SI100X180S with the SAI100X180S
To replace the discontinued SI100X180S, order the SAI100X180S, confirming the ISO 15552 mounting interface, 100 mm bore, 180 mm stroke, G1/2 port, and magnet (-S) for sensor compatibility. When sizing, a 100 mm bore yields 3927 N push and 3681 N pull at 0.5 MPa; dropping to an 80 mm bore gives 2513 N push, while a 125 mm bore offers 6136 N. For stroke lengths over 300 mm, guide external rods to prevent side-load bending. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X180S
- ✓ 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 SI100X180S FAQ
Yes, the AirTAC SI100X180S is discontinued. The direct replacement is the SAI100X180S. It shares the same ISO 15552 mounting interface, 100 mm bore, 180 mm stroke, output force, G1/2 port, and accessories, fitting existing fixtures perfectly.
The 100 mm bore features a G1/2 air port and M20x1.5 rod thread. Force output is 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 SAI100X180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X180S replacement — usually within 7-8 hours.