This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X380STC, 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 SI100X380STC
The AirTAC Airtac SI100 Standard Cylinder SI100X380STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 380mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X380STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke380 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X380STC
- 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 SI100X380STC
The AirTAC SI100X380STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 380mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X380STC, a direct replacement retaining the exact ISO 15552 mounting interface, TC trunnion mount, stroke, and output force.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S suffix means a magnet for CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X380STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X380STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X380STC |
| Bore size | Ø100 mm |
| Stroke | 380 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 SAI100X380STC 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 SAI100X380STC 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 SI100X380STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×380 | 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 SI100X380STC Is Used
Heavy Material Diversion
Handles robust diverting arms on high-capacity packaging lines where 3927N of push force reliably moves loaded pallets.
Large Press Ejection
Provides the extended 380mm reach and 200kg vertical lift capability required to eject bulky formed parts from heavy machinery.
Automated Stacking
Drives vertical lifting platforms in automated storage systems, utilizing the TC trunnion mount to accommodate pivoting loads.
Replacing the Airtac SI100 Standard Cylinder SI100X380STC with the SAI100X380STC
To replace the SI100X380STC, order the SAI100X380STC. Confirm the ISO 15552 TC trunnion interface, 100mm bore, 380mm stroke, G1/2 port, and the -S magnet. If you need more force, the neighboring 125mm bore yields 6136N push at 0.5MPa; if less is acceptable, the 80mm bore provides 2513N. Because the 380mm stroke is long, use an external guide to prevent rod bending and side-load wear. A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X380STC
- ✓ 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 SI100X380STC FAQ
Yes, the SI100X380STC is discontinued. The direct replacement is the SAI100X380STC. It matches the ISO 15552 mounting interface, 100mm bore, 380mm stroke, output force, and G1/2 port size, fitting directly into your existing TC trunnion fixtures.
The bore is 100mm with a G1/2 air port. Force ratings are 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. It operates at 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X380STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X380STC replacement — usually within 7-8 hours.