This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX180, 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 SI100AX180
The AirTAC Airtac SI100 Standard Cylinder SI100AX180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX180
- 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 SI100AX180
The AirTAC SI100AX180 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and a SUS420J2 stainless piston rod. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100AX180. This direct upgrade keeps the same G1/2 port, M20x1.5 thread, and 36 mm cushions, fitting existing ISO 15552 fixtures.
The SAI100AX180 features an upgraded two Y-shaped one-way piston seal for low start-up pressure. Note this SKU lacks a magnet, so it cannot take a CS1-B/DS1-B sensor. For load holding, the SAIL or BSAI lock variants are needed, as cushions only decelerate.
Airtac SI100 Standard Cylinder SI100AX180 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX180 |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAI100AX180 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 SAI100AX180 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 SI100AX180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SI100AX180 Is Used
Heavy-Duty Pressing
Applies 5497 N of push force at 0.7 MPa for seating bearings and assembling heavy mechanical components.
Pallet Diversion
Handles robust 180 mm strokes to push heavy pallets off a main conveyor line onto a secondary packaging track.
Replacing the Airtac SI100 Standard Cylinder SI100AX180 with the SAI100AX180
To replace the SI100AX180, order the SAI100AX180. Confirm the ISO 15552 mounting interface, 100 mm bore, 180 mm stroke, G1/2 port (PT/G/NPT), and your specific mounting accessory. Because this SKU lacks a magnet (-S), it cannot accept position sensors; if sensing is needed, order an SAI100X180S instead. The -A rod is SUS420J2 stainless steel, offering corrosion resistance over the standard carbon steel rod. Sizing both ways: the neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. At 180 mm stroke, side-load is minimal, but always guide the load to prevent rod bending. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX180
- ✓ 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 SI100AX180 FAQ
Yes, the SI100AX180 is discontinued. The direct replacement is the SAI100AX180. It is dimensionally interchangeable per ISO 15552, maintaining the same bore, stroke, output force, G1/2 port, and mounting interface to fit existing fixtures directly.
This double-acting cylinder has a G1/2 port. The thrust ratings are: 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX180 replacement — usually within 7-8 hours.