This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX175S, 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 SI100AX175S
The AirTAC SI100 Standard Cylinder SI100AX175S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX175S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX175S
- 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 SI100AX175S
The AirTAC SI100AX175S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 175mm stroke, delivering 3927N push force at 0.5MPa via a G1/2 port. This legacy unit features a SUS420J2 stainless piston rod and a built-in magnet for CS1-B/DS1-B sensors.
You must order the direct replacement SAI100AX175S, which maintains the exact ISO 15552 mounting interface, stroke and output force. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
Airtac SI100 Standard Cylinder SI100AX175S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX175S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX175S |
| Bore size | Ø100 mm |
| Stroke | 175 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 SAI100AX175S 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 SAI100AX175S 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 SI100AX175S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×175 | 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 SI100AX175S Is Used
Heavy Press Clamping
Applies the 5497N push force at 0.7MPa to secure heavy steel plates during machining operations.
Pallet Diverting
Uses the 175mm stroke and SUS420J2 rod to push loaded pallets smoothly across transfer lines.
Replacing the Airtac SI100 Standard Cylinder SI100AX175S with the SAI100AX175S
To replace this SI100AX175S, order the SAI100AX175S, confirming the ISO 15552 mounting interface, 175mm stroke, G1/2 port and the -S magnet for current AirTAC switches. This 100mm bore yields 3927N at 0.5MPa; a neighbouring 80mm bore provides 2513N, while a 125mm bore offers 6136N. Note that a plain cylinder drifts on air loss as the cushion only decelerates; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve. If your stroke exceeds 300mm, add a guide to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX175S
- ✓ 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 SI100AX175S FAQ
Yes, the SI100AX175S is discontinued. The direct replacement is the SAI100AX175S, which shares the identical ISO 15552 mounting interface, 100mm bore, 175mm stroke, force and G1/2 port.
It features a G1/2 port and delivers 3927N push / 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX175S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX175S replacement — usually within 7-8 hours.