This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X520, 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 SI100X520
The AirTAC SI100 Standard Cylinder SI100X520 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 520mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X520, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke520 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X520
- 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 SI100X520
The AirTAC SI100X520 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 520 mm stroke. It delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, operating at 30-800 mm/s through a G1/2 port. As an end-of-line unit, it is replaced directly by the SAI100X520.
The SAI100X520 direct maintains the exact ISO 15552 mounting interface, M20x1.5 thread, and 36 mm cushions. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. Without a -S magnet, this SKU cannot take a sensor. For locked loads, the SAI family adds SAIL or BSAI variants.
Airtac SI100 Standard Cylinder SI100X520 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X520 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X520 |
| Bore size | Ø100 mm |
| Stroke | 520 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 SAI100X520 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 SAI100X520 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 SI100X520
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×520 | 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 SI100X520 Is Used
Pallet Diversion
Pushes heavy pallets laterally across transfer lines using 3927 N of thrust at 0.5 MPa.
Press Ejection
Cycles stamping presses to eject formed parts, relying on the 36 mm adjustable cushions.
Replacing the Airtac SI100 Standard Cylinder SI100X520 with the SAI100X520
To replace the SI100X520, order the SAI100X520, confirming the ISO 15552 mounting interface, 520 mm stroke, G1/2 port, and M20x1.5 rod thread. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if position sensing is required. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80 mm bore offers 2513 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock for hold. Finally, the 520 mm stroke demands external guides to prevent rod-bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X520
- ✓ 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 SI100X520 FAQ
Yes, the SI100X520 is discontinued. The direct replacement is the SAI100X520, which shares the identical ISO 15552 mounting interface, 100 mm bore, 520 mm stroke, force, and G1/2 port.
The G1/2 port feeds a 100 mm bore yielding 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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X520
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X520 replacement — usually within 7-8 hours.