This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX65S, 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 SI100AX65S
The AirTAC Airtac SI100 Standard Cylinder SI100AX65S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 65mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX65S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX65S
- 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 SI100AX65S
The AirTAC SI100AX65S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 65mm stroke. Featuring a SUS420J2 stainless piston rod, it delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100AX65S, matching the bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL lock and BSAI clamp-lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100AX65S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX65S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX65S |
| Bore size | Ø100 mm |
| Stroke | 65 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 SAI100AX65S 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 SAI100AX65S 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 SI100AX65S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×65 | 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 SI100AX65S Is Used
Heavy-Duty Pressing
Drives 3927 N at 0.5 MPa for seating bearings and forming components in automated machinery, utilizing the SUS420J2 rod in washdown environments.
Clamp Actuation
Secures large workpieces or pallets during transfer, where the double-acting 100mm bore provides the necessary holding power and rapid 30-800 mm/s cycling.
Replacing the Airtac SI100 Standard Cylinder SI100AX65S with the SAI100AX65S
To replace the SI100AX65S, order the SAI100AX65S. Confirm the ISO 15552 mounting interface, the 65mm stroke, the G1/2 port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. If your application requires load holding on air loss, note that a plain cylinder drifts and the 36mm adjustable cushion only decelerates; specify an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The SUS420J2 rod suits corrosive environments, and a Viton H seal extends heat to 150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX65S
- ✓ 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 SI100AX65S FAQ
Yes, the SI100AX65S is discontinued. The direct replacement is the SAI100AX65S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 65mm stroke, 3927 N force, G1/2 port, and mounting fixtures.
This double-acting cylinder features a G1/2 port and an M20x1.5 rod thread. It delivers 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 maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX65S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX65S replacement — usually within 7-8 hours.