This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX75S, 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 SI100AX75S
The AirTAC Airtac SI100 Standard Cylinder SI100AX75S 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 SAI100AX75S, 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 → SAI100AX75S
- 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 SI100AX75S
The AirTAC SI100AX75S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 75mm stroke. Delivering 3927N push force at 0.5MPa, it features a SUS420J2 stainless rod and a built-in piston magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI100AX75S, retaining the same G1/2 port and interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. The SAI family also adds SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100AX75S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX75S |
| 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 SAI100AX75S 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 SAI100AX75S 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 SI100AX75S
| 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 SI100AX75S Is Used
Heavy-Duty Pressing
Drives large forming and stamping presses requiring 3927N of push force at 0.5MPa with a short 75mm stroke.
Pallet Diversion
Actuates heavy-duty lane diverters and sorting gates on high-capacity packaging conveyor lines.
Lift Gate Actuation
Raises and lowers substantial loading dock gates or vertical lift platforms safely within a compact 75mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100AX75S with the SAI100AX75S
To replace the SI100AX75S, order the SAI100AX75S and confirm the ISO 15552 mounting interface, 75mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. The -S magnet and -A SUS420J2 stainless rod carry over directly. This 100mm bore yields 3927N push at 0.5MPa; sizing down to an 80mm bore gives 2513N, while uprating pressure to 0.7MPa provides 5497N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant to hold loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX75S
- ✓ 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 SI100AX75S FAQ
Yes, the SI100AX75S is discontinued. The direct replacement is the SAI100AX75S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 75mm stroke, G1/2 port, and mounting fixtures.
This double-acting cylinder uses a G1/2 air port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and 7068N push at 0.9MPa, with a theoretical maximum force of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX75S replacement — usually within 7-8 hours.