This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX210, 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 SI100AX210
The AirTAC Airtac SI100 Standard Cylinder SI100AX210 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 SAI100AX210, 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 → SAI100AX210
- 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 SI100AX210
The AirTAC SI100AX210 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 210mm stroke. It delivers 3927 N push force at 0.5 MPa and features a G1/2 port. The direct replacement is the SAI100AX210, which shares the same interface, bore, stroke, force and mounting fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has an SUS420J2 stainless rod (-A) but lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI100 Standard Cylinder SI100AX210 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX210 |
| 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 SAI100AX210 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 SAI100AX210 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 SI100AX210
| 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 SI100AX210 Is Used
Heavy-Duty Pressing
Drives large stamping or forming fixtures utilizing the 5497 N push force available at 0.7 MPa.
Corrosive Environment Actuation
Operates automated machinery in washdown areas using the SUS420J2 stainless steel piston rod option.
Replacing the Airtac SI100 Standard Cylinder SI100AX210 with the SAI100AX210
To replace the SI100AX210, order the SAI100AX210. Verify the ISO 15552 mounting interface, the 100mm bore, the 210mm stroke, the G1/2 port (PT/G/NPT) and your specific mounting accessory. Because this SKU lacks the -S magnet, it cannot support position sensing; if switches are needed, specify a magnet on the SAI order. For sizing alternatives, the neighbouring 80mm bore provides 2513 N push at 0.5 MPa, while the 125mm bore offers 6136 N. Since this plain cylinder does not hold load on air loss—the cushion only decelerates—use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for held loads. At 210mm stroke, rod bending is minimal, but for any stroke over 300mm, add a guide to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX210
- ✓ 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 SI100AX210 FAQ
Yes, the SI100AX210 is discontinued. The direct replacement is the SAI100AX210. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 210mm stroke, 7068 N force, G1/2 port and mounting interface.
The 100mm bore uses a G1/2 port. Force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX210 replacement — usually within 7-8 hours.