This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX950, 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 SI100AX950
The AirTAC Airtac SI100 Standard Cylinder SI100AX950 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 950mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX950, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke950 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX950
- 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 SI100AX950
The AirTAC SI100AX950 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 950mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100AX950. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also introduces SAIL, SAIF, and BSAI lock variants the SI lacked. This SKU has a SUS420J2 stainless rod (-A) but no magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI100 Standard Cylinder SI100AX950 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX950 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX950 |
| Bore size | Ø100 mm |
| Stroke | 950 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 SAI100AX950 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 SAI100AX950 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 SI100AX950
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×950 | 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 SI100AX950 Is Used
Long-Stroke Diversion
Pushes heavy pallets across 950mm transfer lines where the 3927N thrust at 0.5MPa easily overcomes friction.
Vertical Material Lift
Raises 200kg platforms through 950mm of travel, relying on external guides to prevent rod bending.
Stainless Rod Actuation
Drives tooling in mildly corrosive washdown areas using the SUS420J2 rod option instead of standard carbon steel.
Replacing the Airtac SI100 Standard Cylinder SI100AX950 with the SAI100AX950
To replace this SI100AX950, order the SAI100AX950, confirming the ISO 15552 interface, 100mm bore, 950mm stroke, G1/2 port, and SUS420J2 rod. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select a magnet-equipped SAI. For sizing, the 80mm bore yields 2513N push at 0.5MPa, while the 125mm bore yields 6136N. A plain cylinder drifts on air loss since cushions only decelerate; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI variant. At 950mm, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX950
- ✓ 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 SI100AX950 FAQ
Yes, the SI100AX950 is discontinued. The direct replacement is the SAI100AX950. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 950mm stroke, force, G1/2 port, and mounting fixtures.
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 push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX950
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX950 replacement — usually within 7-8 hours.