This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X225S, 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 Airtac SI100 Standard Cylinder SI100X225S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 225mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X225S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X225S is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore and 225mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, utilizing a G1/2 port. AirTAC replaced this legacy unit with the SAI100X225S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, force, and port size. Note that 225mm is a nonstandard stroke.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also expands configuration options with SAIL air-released lock, SAIF integrated 4M valve, and BSAI clamp-lock variants the original SI lacked.
| Model | Airtac SI100 Standard Cylinder SI100X225S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X225S |
| Bore size | Ø100 mm |
| Stroke | 225 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 SAI100X225S 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 SAI100X225S 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. |
| ×225 | 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 large metal stamping and riveting fixtures requiring substantial thrust, delivering 5497 N at 0.7 MPa to seat heavy components firmly.
Pivots heavy-duty diverter arms on high-throughput packaging lines, using the G1/2 port for rapid 30-800 mm/s cycling.
To replace the discontinued SI100X225S, order the SAI100X225S. It drops directly into existing fixtures via the identical ISO 15552 mounting interface, matching the 100mm bore, 225mm stroke, G1/2 port, and M20x1.5 rod thread. Because 225mm is a nonstandard stroke, verify the exact extended length against your fixture. When sizing, consider neighboring bores: an 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore provides 6136 N. This unit includes a magnet (-S) for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. Remember, a standard cylinder drifts without live air—the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. At 225mm, ensure guide rails manage side loads to prevent rod bending.
Replacement checklist
Yes, the AirTAC SI100X225S is discontinued. The direct replacement is the SAI100X225S. It features the same ISO 15552 mounting interface, 100mm bore, 225mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
This double-acting cylinder uses a G1/2 port. Force 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 of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X225S replacement — usually within 7-8 hours.