This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX165S, 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 SI100AX165S
The AirTAC Airtac SI100 Standard Cylinder SI100AX165S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX165S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX165S
- 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 SI100AX165S
The AirTAC SI100AX165S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 165mm stroke. It delivers a 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100AX165S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. You ordered the -A variant, meaning it has a SUS420J2 stainless steel piston rod instead of standard carbon steel. The -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX165S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX165S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX165S |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAI100AX165S 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 SAI100AX165S 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 SI100AX165S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SI100AX165S Is Used
Heavy-Duty Pressing
Applies the 3927 N push force at 0.5 MPa to seat bearings or assemble heavy components securely.
Pallet Diversion
Uses the 165mm stroke to push heavy pallets onto secondary processing lines with reliable power.
Replacing the Airtac SI100 Standard Cylinder SI100AX165S with the SAI100AX165S
To replace your SI100AX165S, order the SAI100AX165S. Confirm the ISO 15552 mounting interface, the 165mm stroke, and the G1/2 port. Keep your existing mounting accessory and specify the -A SUS420J2 stainless rod and -S magnet (the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B). If you need more force, the neighbouring 125mm bore provides 6136 N push at 0.5 MPa; if less is acceptable, the 80mm bore gives 2513 N. A plain cylinder drifts on air loss because the cushion only decelerates—for load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. Since this is a non-standard 165mm stroke, ensure your guide supports any side loads to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX165S
- ✓ 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 SI100AX165S FAQ
Yes, the SI100AX165S is discontinued. The direct replacement is the SAI100AX165S. It shares the same ISO 15552 mounting interface, 100mm bore, 165mm stroke, force, and G1/2 port, fitting existing fixtures perfectly.
At 0.5 MPa it pushes 3927 N and pulls 3681 N. Push force is 5497 N at 0.7 MPa and 7068 N at 0.9 MPa. The theoretical max is 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX165S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX165S replacement — usually within 7-8 hours.