This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX105, 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 SI100AX105
The AirTAC SI100 Standard Cylinder SI100AX105 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 105mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX105, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX105
- 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 SI100AX105
The AirTAC SI100AX105 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 105mm stroke. It delivers a 3927N push force at 0.5MPa and uses a G1/2 air port. The direct replacement is the SAI100AX105, which shares identical ISO 15552 mounting dimensions, force, and porting. This specific SKU features a SUS420J2 stainless steel piston rod (the -A option) for corrosion resistance, but lacks a magnet, so it cannot accept position sensors.
The SAI100AX105 upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so consider the SAIL or BSAI lock variants if needed.
Airtac SI100 Standard Cylinder SI100AX105 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX105 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX105 |
| Bore size | Ø100 mm |
| Stroke | 105 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 SAI100AX105 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 SAI100AX105 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 SI100AX105
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×105 | 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 SI100AX105 Is Used
Heavy Stamping Press
Drives large stamping dies requiring substantial force, utilizing the 3927N push capacity at 0.5MPa to form thick metal components reliably.
Pallet Lift Station
Lifts loaded pallets vertically; the SUS420J2 stainless rod resists humidity, while the 105mm stroke handles precise height indexing.
Bulk Material Divert
Actuates heavy routing gates on high-capacity conveyors, depending on the 36mm adjustable air cushions to decelerate the 25mm rod smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100AX105 with the SAI100AX105
To replace the discontinued SI100AX105, order the SAI100AX105. Confirm the ISO 15552 mounting interface matches your existing fixture, along with the 105mm stroke and G1/2 port. This unit has the -A stainless SUS420J2 rod and no magnet (-S), meaning it cannot support CS1-B/DS1-B sensors; if sensing is required, specify an SAI with a magnet. For sizing alternatives, a neighboring 80mm bore yields 2513N push at 0.5MPa, while a 125mm bore provides 6136N. Because this plain cylinder does not hold load without live air, add an external pilot check valve or explore the SAIL/BSAI locking variants for vertical safety.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX105
- ✓ 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 SI100AX105 FAQ
Yes, the AirTAC SI100AX105 is discontinued. The direct replacement is the SAI100AX105. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 105mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 air port and a 25mm piston rod. The thrust is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and 7068N push at 0.9MPa, with a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX105
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX105 replacement — usually within 7-8 hours.