This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X580S, 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 SI100X580S
The AirTAC Airtac SI100 Standard Cylinder SI100X580S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 580mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X580S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke580 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X580S
- 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 SI100X580S
The AirTAC SI100X580S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 580mm stroke, delivering 3927 N push force at 0.5 MPa. It features a G1/2 port, M20x1.5 rod thread, and adjustable air cushions. The direct replacement is the SAI100X580S, matching the exact ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. With a 580mm stroke, external guides are recommended to prevent rod bending. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. This -S SKU uses CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X580S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X580S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X580S |
| Bore size | Ø100 mm |
| Stroke | 580 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 SAI100X580S 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 SAI100X580S 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 SI100X580S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×580 | 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 SI100X580S Is Used
Heavy Press Ejection
Provides the 3927 N push at 0.5 MPa needed to eject dense stamped parts from heavy presses, utilizing the 580mm stroke to clear the die area completely.
Logistics Diverter
Pushes heavy freight cartons across high-speed sortation belts, taking advantage of the 30-800 mm/s speed range and 580mm extension to reach multiple lanes.
Replacing the Airtac SI100 Standard Cylinder SI100X580S with the SAI100X580S
To replace the SI100X580S, order the SAI100X580S. Verify the ISO 15552 mounting interface, 100mm bore, 580mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. The -S magnet equates to legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For sizing, neighboring bores offer different forces: an 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Because the 580mm stroke exceeds 300mm, add external guides to prevent rod bending and side-load wear. Rod materials include carbon steel, SUS420J2 (A), or SUS304 (B); Viton H seals raise the temperature range to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X580S
- ✓ 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 SI100X580S FAQ
Yes, the SI100X580S is discontinued. The direct replacement is the SAI100X580S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 580mm stroke, output force, G1/2 port, and mounting accessories.
The bore is 100mm with a G1/2 port. It delivers 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. Operating pressure is 0.15-1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X580S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X580S replacement — usually within 7-8 hours.