This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X210S, 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 SI100X210S
The AirTAC Airtac SI100 Standard Cylinder SI100X210S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 210mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X210S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X210S
- 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 SI100X210S
The AirTAC SI100X210S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 210mm stroke. It delivers 3927N push force at 0.5MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X210S, a direct upgrade retaining the exact mounting interface, output force, and dimensions.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI accepts current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X210S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X210S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X210S |
| Bore size | Ø100 mm |
| Stroke | 210 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 SAI100X210S 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 SAI100X210S 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 SI100X210S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×210 | 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 SI100X210S Is Used
Heavy Press Clamping
Generates 3927N of push force at 0.5MPa to secure heavy metalwork or composite panels during machining and press operations.
Bulk Material Diversion
Drives large-scale diverters or sorting gates on high-capacity conveyors, utilizing the 210mm stroke to clear wide product paths.
Replacing the Airtac SI100 Standard Cylinder SI100X210S with the SAI100X210S
To replace the SI100X210S, order the SAI100X210S. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port thread (PT/G/NPT), and the M20x1.5 rod thread. Because this stroke is over 300mm, ensure adequate guide support to prevent rod bending and side-load wear. If you need to upsize or downsize, neighboring bores (80mm or 125mm) offer 2513N or 6136N push at 0.5MPa respectively. Note that a standard cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve, or specify the SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X210S
- ✓ 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 SI100X210S FAQ
Yes, the SI100X210S is discontinued. The direct replacement is the SAI100X210S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 210mm stroke, G1/2 port, and mounting fixtures exactly.
This double-acting cylinder uses a G1/2 air port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a maximum theoretical force of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X210S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X210S replacement — usually within 7-8 hours.