This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1200S, 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 SI100X1200S
The AirTAC Airtac SI100 Standard Cylinder SI100X1200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X1200S
- 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 SI100X1200S
The AirTAC SI100X1200S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 1200 mm stroke. Delivering 3927 N push force at 0.5 MPa via a G1/2 port, it is replaced by the direct replacement SAI100X1200S. This current-production upgrade shares the exact ISO 15552 mounting interface, bore, stroke, output force, port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for low start-up pressure and long life. For load holding, note that a plain cylinder drifts on air loss as cushions only decelerate; consider the SAIL lock or BSAI clamp-lock variants the SI lacked. With the -S magnet, this unit supports legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X1200S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1200S |
| Bore size | Ø100 mm |
| Stroke | 1200 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 SAI100X1200S 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 SAI100X1200S 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 SI100X1200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1200 | 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 SI100X1200S Is Used
Long-Stroke Material Transfer
Pushes heavy pallets or workpieces across 1200 mm stations where the 3927 N output at 0.5 MPa handles substantial inertia reliably.
Large Press Ejection
Ejects bulky formed parts from machinery, utilizing the adjustable 36 mm air cushions at both ends to decelerate the 25 mm rod smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X1200S with the SAI100X1200S
To replace the SI100X1200S, order the SAI100X1200S. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the G1/2 port, and the -S magnet for current AirTAC switches. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80 mm bore offers 2513 N. For this 1200 mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder does not hold load without live air; for safety, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1200S
- ✓ 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 SI100X1200S FAQ
Yes, the AirTAC SI100X1200S is discontinued. The direct replacement is the SAI100X1200S. It is a true ISO 15552 profile cylinder that maintains the same 100 mm bore, 1200 mm stroke, output force, G1/2 port, and mounting interface, so it drops directly into your existing fixtures.
The 100 mm bore features a G1/2 air port and a 25 mm rod. It delivers 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 theoretical max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1200S replacement — usually within 7-8 hours.