This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1200STC, 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 SI100X1200STC
The AirTAC Airtac SI100 Standard Cylinder SI100X1200STC 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 SAI100X1200STC, 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 → SAI100X1200STC
- 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 SI100X1200STC
The AirTAC SI100X1200STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 1200mm stroke, TC trunnion mount, and a piston magnet for CS1-B/DS1-B switches. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X1200STC. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, port, and TC accessory.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. A plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI100 Standard Cylinder SI100X1200STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1200STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1200STC |
| 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 SAI100X1200STC 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 SAI100X1200STC 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 SI100X1200STC
| 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 SI100X1200STC Is Used
Long-Stroke Transfer
Pushes heavy pallets 1200mm between conveyor lines using 3927 N of thrust at 0.5 MPa.
Large Door Actuation
Opens industrial bulkhead doors over a 1200mm travel, relying on the 36mm adjustable cushion.
Replacing the Airtac SI100 Standard Cylinder SI100X1200STC with the SAI100X1200STC
To replace the SI100X1200STC, order the SAI100X1200STC. Confirm the ISO 15552 TC trunnion interface, 100mm bore, 1200mm stroke, G1/2 port, and the -S magnet for current AirTAC switches. Sizing both ways: a 100mm bore yields 3927 N push at 0.5 MPa, while the neighboring 80mm bore gives 2513 N. For load holding on air loss, the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 1200mm, prevent rod bending by using an external guide to absorb side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1200STC
- ✓ 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 SI100X1200STC FAQ
Yes, the SI100X1200STC is discontinued. The direct replacement is the SAI100X1200STC. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 100mm bore, 1200mm stroke, G1/2 port, TC mount, and output force.
The G1/2 port bore delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a max force of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 25mm rod and M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1200STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1200STC replacement — usually within 7-8 hours.