This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X205STC, 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 SI100X205STC
The AirTAC SI100 Standard Cylinder SI100X205STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 205mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X205STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke205 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X205STC
- 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 SI100X205STC
The AirTAC SI100X205STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 205mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X205STC, retaining the same interface, TC trunnion mount and M20x1.5 rod thread.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X205STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X205STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X205STC |
| Bore size | Ø100 mm |
| Stroke | 205 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 SAI100X205STC 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 SAI100X205STC 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 SI100X205STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×205 | 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 SI100X205STC Is Used
Heavy Press Clamping
Applies 3927N of push force at 0.5MPa to secure heavy metal components during machining operations.
Pallet Diversion
Uses the TC trunnion mount to pivot and redirect loaded pallets along high-speed material handling lines.
Replacing the Airtac SI100 Standard Cylinder SI100X205STC with the SAI100X205STC
To replace the SI100X205STC, order the SAI100X205STC. Confirm the ISO 15552 TC trunnion mount, 205mm stroke, G1/2 port and -S magnet for CS1-B/DS1-B switches. If you need more force, the neighboring 125mm bore offers 6136N [email protected]; if less is required, the 80mm bore gives 2513N. Note that a plain cylinder drifts on air loss as the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant to hold loads. For this 205mm stroke, guide external rods to prevent side-load bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X205STC
- ✓ 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 SI100X205STC FAQ
Yes, the SI100X205STC is discontinued. The direct replacement is the SAI100X205STC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 205mm stroke, G1/2 port, TC mount and output force.
It features a G1/2 port and M20x1.5 rod thread. Force output is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, with a theoretical maximum of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X205STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X205STC replacement — usually within 7-8 hours.