This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX950S, 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 SI100AX950S
The AirTAC Airtac SI100 Standard Cylinder SI100AX950S 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 SAI100AX950S, 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 → SAI100AX950S
- 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 SI100AX950S
The AirTAC SI100AX950S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 950mm stroke. It delivers 3927 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100AX950S, retaining the same interface, force, and mounting.
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. This unit has a SUS420J2 stainless rod (-A) and a magnet (-S) for CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX950S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX950S |
| 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 SAI100AX950S 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 SAI100AX950S 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 SI100AX950S
| 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 SI100AX950S Is Used
Heavy Material Transfer
Drives large pallets or heavy fixtures over 950mm on packaging lines, utilizing the 3927 N push force at 0.5 MPa to move loads reliably.
Large Press Ejection
Ejects molded or stamped parts from heavy machinery, where the SUS420J2 stainless rod provides corrosion resistance against fluids.
Replacing the Airtac SI100 Standard Cylinder SI100AX950S with the SAI100AX950S
To replace the SI100AX950S, order the SAI100AX950S. Verify the ISO 15552 mounting interface, 950mm stroke, G1/2 port, and the SUS420J2 rod (-A). The magnet (-S) supports legacy CS1-B/DS1-B sensors, though the SAI uses current AirTAC switches. Sizing checks: a 100mm bore yields 3927 N push @0.5 MPa (80mm gives 2513 N; 125mm gives 6136 N). For 950mm strokes, use external guides to prevent rod bending. The cushion only decelerates; for load holding on air loss, use an external rod lock or pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX950S
- ✓ 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 SI100AX950S FAQ
Yes, the SI100AX950S is discontinued. The direct replacement is the SAI100AX950S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 950mm stroke, force, G1/2 port, and mounting fixtures.
The 100mm bore provides 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 max force of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX950S replacement — usually within 7-8 hours.