This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X225N, 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 SI100X225N
The AirTAC SI100 Standard Cylinder SI100X225N 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 SAI100X225N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X225N
- 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 SI100X225N
The AirTAC SI100X225N is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 225mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X225N, which shares identical mounting, stroke, and force specs. Note that 225mm is a nonstandard stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X225N Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X225N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X225N |
| 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 SAI100X225N 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 SAI100X225N 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 SI100X225N
| 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).
Where the Airtac SI100 Standard Cylinder SI100X225N Is Used
Heavy Pressing
Drives 3927N at 0.5MPa for seating bearings and heavy stamping assemblies.
Pallet Diverting
Shifts loaded pallets using the 225mm stroke and 5497N force at 0.7MPa.
Replacing the Airtac SI100 Standard Cylinder SI100X225N with the SAI100X225N
To replace the SI100X225N, order the SAI100X225N. Verify the ISO 15552 mounting interface, 100mm bore, 225mm stroke, G1/2 port (PT/G/NPT thread), and mounting accessory. This nonstandard 225mm stroke exceeds standard increments; for strokes over 300mm, add external guides to prevent rod bending and side loads. Sizing both ways: a neighbouring 80mm bore gives 2513N push at 0.5MPa, while a 125mm bore gives 6136N. If you need load holding on air loss, a plain cylinder drifts; use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. This no-S SKU cannot accept a CS1-B/DS1-B sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X225N
- ✓ 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 SI100X225N FAQ
Yes, the SI100X225N is discontinued. The direct replacement is the SAI100X225N. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 225mm stroke, 3927N force, G1/2 port, and mounting interface.
The G1/2 port feeds thrust of 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X225N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X225N replacement — usually within 7-8 hours.