This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX5S, 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 SI100AX5S
The AirTAC Airtac SI100 Standard Cylinder SI100AX5S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 5mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX5S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX5S
- 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 SI100AX5S
The AirTAC SI100AX5S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 5mm stroke, and an SUS420J2 stainless steel rod. It delivers 3927N push at 0.5MPa via a G1/2 port. AirTAC replaced this with the SAI100AX5S, a direct upgrade keeping the exact interface, force, and mounting.
The SAI features an upgraded two Y-shaped piston seal for low start-up pressure. This -S model uses CS1-B/DS1-B sensors. For load holding, the cushion only decelerates; use SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX5S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX5S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX5S |
| Bore size | Ø100 mm |
| Stroke | 5 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 SAI100AX5S 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 SAI100AX5S 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 SI100AX5S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×5 | 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 SI100AX5S Is Used
Short-Stroke Clamping
Ideal for high-force 3927N clamping jigs requiring minimal 5mm travel to secure heavy automotive castings.
Press Fit Seating
Provides reliable 100mm bore thrust for seating bearings or pins in assembly fixtures without over-travel.
Corrosive Ejector
The SUS420J2 stainless rod excels in damp packaging lines, ejecting products with precise short movements.
Replacing the Airtac SI100 Standard Cylinder SI100AX5S with the SAI100AX5S
To replace the SI100AX5S, order the SAI100AX5S. Verify the ISO 15552 mounting interface, G1/2 port, and M20x1.5 thread. This unit has a 5mm stroke, which is nonstandard (max standard is 1500mm), so confirm custom spacer dimensions. The -A rod is SUS420J2 and -S includes a magnet for CS1-B/DS1-B switches. Neighbouring bore 80mm gives 2513N push at 0.5MPa; 125mm gives 6136N. For dead stops, note the cushion only decelerates. Use SAIL, BSAI, or external pilot check valves to hold loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX5S
- ✓ 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 SI100AX5S FAQ
Yes, the SI100AX5S is discontinued. The direct replacement is the SAI100AX5S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 5mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX5S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX5S replacement — usually within 7-8 hours.