This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X227S, 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 SI100X227S
The AirTAC Airtac SI100 Standard Cylinder SI100X227S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 227mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X227S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke227 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X227S
- 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 SI100X227S
The AirTAC SI100X227S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 227 mm stroke. It delivers a push force of 3927 N at 0.5 MPa. The direct replacement is the SAI100X227S, matching the G1/2 port, M20x1.5 rod thread, and mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure. The SI -S suffix indicates a piston magnet for CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100X227S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X227S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X227S |
| Bore size | Ø100 mm |
| Stroke | 227 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 SAI100X227S 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 SAI100X227S 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 SI100X227S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×227 | 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 SI100X227S Is Used
Heavy Press Clamping
Applies the 3927 N push force at 0.5 MPa to secure heavy metal components during machining and pressing operations.
Pallet Diversion
Uses the 227 mm stroke to push loaded pallets cleanly onto parallel conveyor lines without requiring external guides.
Replacing the Airtac SI100 Standard Cylinder SI100X227S with the SAI100X227S
To replace the SI100X227S, order the SAI100X227S and confirm the ISO 15552 mounting interface, 100 mm bore, 227 mm stroke, G1/2 port, and magnet. The SAI family adds SAIL lock, SAIF valve, and BSAI clamp-lock variants. A plain cylinder drifts on air loss; cushions only decelerate, so use a rod lock or pilot check valve for holding. Neighbouring bores: an 80 mm bore gives 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X227S
- ✓ 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 SI100X227S FAQ
Yes, the SI100X227S is discontinued. The direct replacement is the SAI100X227S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 227 mm stroke, G1/2 port, and mounting fixtures.
The G1/2 port bore delivers a push of 3927 N and pull of 3681 N 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 SAI100X227S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X227S replacement — usually within 7-8 hours.