This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX75, 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 SI100AX75
The AirTAC Airtac SI100 Standard Cylinder SI100AX75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX75
- 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 SI100AX75
The AirTAC SI100AX75 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 75mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, utilizing a G1/2 port and an M20x1.5 rod thread. The direct replacement is the SAI100AX75, matching the original bore, stroke, force, port, and ISO 15552 mounting interface for immediate fixture compatibility.
This SKU features a SUS420J2 stainless piston rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure.
Airtac SI100 Standard Cylinder SI100AX75 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX75 |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAI100AX75 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 SAI100AX75 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 SI100AX75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SI100AX75 Is Used
Heavy-Duty Pressing
Drives robust pressing and stamping operations requiring up to 3927 N of push force at 0.5 MPa, with the SUS420J2 stainless rod resisting moisture.
Pallet Diversion
Executes 75mm strokes to divert heavy pallets on packaging lines, relying on the 36 mm adjustable air cushions to absorb kinetic energy at stroke ends.
Material Lift Stops
Acts as a hard stop for vertical material lifts handling loads up to 200 kg, though an external pilot check valve is needed to prevent drift on air loss.
Replacing the Airtac SI100 Standard Cylinder SI100AX75 with the SAI100AX75
To replace the discontinued SI100AX75, order the SAI100AX75 and verify your ISO 15552 mounting interface, 75mm stroke, and G1/2 port. Because this specific SKU has no magnet, it cannot support legacy CS1-B/DS1-B switches; if sensing is required, select an SAI model with the -S suffix. For sizing alternatives, dropping to a bore 80 yields 2513 N push at 0.5 MPa, while a bore 125 provides 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock or pilot check valve for load holding, or explore the SAIL or BSAI lock variants. The SAIF variant adds a built-in 4M valve for bores 32-100.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX75
- ✓ 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 SI100AX75 FAQ
Yes, the AirTAC SI100AX75 is discontinued. The direct replacement is the SAI100AX75. It shares the exact same ISO 15552 mounting interface, 100mm bore, 75mm stroke, G1/2 port, and output force, so it fits existing fixtures perfectly while upgrading the piston seal.
This double-acting cylinder uses a G1/2 air 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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX75
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX75 replacement — usually within 7-8 hours.