This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X127, 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 SI100X127
The AirTAC Airtac SI100 Standard Cylinder SI100X127 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 127mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X127, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke127 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X127
- 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 SI100X127
The AirTAC SI100X127 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 127 mm stroke, delivering 3927 N push force at 0.5 MPa via a G1/2 port. It is replaced by the SAI100X127.
The SAI direct retains the exact ISO 15552 mounting interface, bore, stroke, force and port. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure. Without a -S magnet, this SKU cannot take a sensor.
Airtac SI100 Standard Cylinder SI100X127 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X127 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X127 |
| Bore size | Ø100 mm |
| Stroke | 127 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 SAI100X127 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 SAI100X127 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 SI100X127
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×127 | 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 SI100X127 Is Used
Heavy Pressing
Drives large stamping and forming presses requiring 3927 N push force at 0.5 MPa with stable 127 mm travel.
Pallet Handling
Indexes heavy loaded pallets on transfer lines where the 100 mm bore and G1/2 port deliver high thrust.
Bulk Diverting
Actuates heavy-duty diverter arms on conveyor belts, moving substantial mass through 127 mm strokes.
Replacing the Airtac SI100 Standard Cylinder SI100X127 with the SAI100X127
To replace the SI100X127, order the SAI100X127. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G1/2 port thread (PT/G/NPT) and the 127 mm stroke. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors. For sizing, a 100 mm bore yields 3927 N push at 0.5 MPa; dropping to an 80 mm bore gives 2513 N, while a 125 mm bore yields 6136 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or choose the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X127
- ✓ 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 SI100X127 FAQ
Yes, the SI100X127 is discontinued. The direct replacement is the SAI100X127, which shares the same ISO 15552 mounting interface, 100 mm bore, 127 mm stroke, force, and G1/2 port.
It uses a G1/2 port. 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 SAI100X127
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X127 replacement — usually within 7-8 hours.