This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X950S, 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 SI100X950S
The AirTAC Airtac SI100 Standard Cylinder SI100X950S 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 SAI100X950S, 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 → SAI100X950S
- 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 SI100X950S
The AirTAC SI100X950S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 950mm stroke. It delivers a push force of 3927 N at 0.5 MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X950S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X950S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X950S |
| 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 SAI100X950S 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 SAI100X950S 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 SI100X950S
| 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 SI100X950S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across 950mm gaps in packaging lines, utilizing the 3927 N push force to overcome carton inertia without stalling.
Large Assembly Press
Positions heavy automotive subframes over 950mm spans, requiring the 801 kgf maximum theoretical force for secure clamping.
Replacing the Airtac SI100 Standard Cylinder SI100X950S with the SAI100X950S
To replace the SI100X950S, order the SAI100X950S. Confirm the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port, and the -S magnet for current AirTAC switches. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. At 950mm, this cylinder is highly susceptible to rod bending; use external guides to prevent side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X950S
- ✓ 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 SI100X950S FAQ
Yes, the SI100X950S is discontinued. The direct replacement is the SAI100X950S. It shares the identical ISO 15552 mounting interface, 100mm bore, 950mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
The 100mm bore features a G1/2 air port and an M20x1.5 rod thread. Force ratings are: push 3927 N and pull 3681 N at 0.5 MPa; push 5497 N at 0.7 MPa; push 7068 N at 0.9 MPa; with a theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X950S replacement — usually within 7-8 hours.