This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X60S, 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.

The AirTAC SI100 Standard Cylinder SI100X60S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 60mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X60S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X60S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 60 mm stroke, delivering 3927 N of push force at 0.5 MPa. It features a Ø25 mm piston rod, M20x1.5 rod thread, G1/2 air port, and 36 mm adjustable air cushions at both ends. Because this SI unit is end-of-life, AirTAC replaced it with the SAI100X60S, a direct replacement sharing the exact same ISO 15552 mounting interface, bore, stroke, force, port size, and accessories.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for extended lifespan and lower start-up pressure. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL, SAIF, and BSAI lock variants the SI line lacked.
| Model | Airtac SI100 Standard Cylinder SI100X60S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X60S |
| Bore size | Ø100 mm |
| Stroke | 60 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 SAI100X60S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X60S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×60 | 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).
Drives high-force stamping and pressing jigs where the 3927 N push at 0.5 MPa is needed to seat or form components securely.
Actuates heavy diverters and stops on conveyor lines, using the 60 mm stroke to reroute loaded pallets efficiently.
Secures large workpieces in machining or welding cells, providing robust holding power for industrial fabrication.
To replace the discontinued SI100X60S, order the SAI100X60S and confirm your existing fixture matches the ISO 15552 mounting interface dimensions, along with the 100 mm bore, 60 mm stroke, and G1/2 port. Retain your original mounting accessory (such as LB foot, FA flange, or TC trunnion) and verify the thread option (PT, G, or NPT). Because this is a -S model, it has a piston magnet for CS1-B/DS1-B switches; the SAI replacement uses current AirTAC switches. When sizing, note the 80 mm bore offers 2513 N push at 0.5 MPa, while the 125 mm bore provides 6136 N. A plain cylinder does not hold load without live air; for vertical or safety-critical holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI100X60S is discontinued. The direct replacement is the SAI100X60S. It shares the identical ISO 15552 mounting interface, 100 mm bore, 60 mm stroke, output force, and G1/2 port, so it drops directly into existing fixtures.
This double-acting cylinder has a G1/2 air port. The thrust ratings 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 theoretical maximum force of 801 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X60S replacement — usually within 7-8 hours.