This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X585S, 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 SI100X585S
The AirTAC Airtac SI100 Standard Cylinder SI100X585S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 585mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X585S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke585 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X585S
- 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 SI100X585S
The AirTAC SI100X585S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 3927 N push force at 0.5 MPa through its 100 mm bore and G1/2 port. Because this legacy series is end-of-life, AirTAC replaced it with the SAI100X585S—a direct upgrade retaining the exact stroke, output force, and mounting interface.
The SAI successor features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. It also introduces lock and valve variants the original lacked, such as the SAIL and BSAI clamp-lock.
Airtac SI100 Standard Cylinder SI100X585S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X585S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X585S |
| Bore size | Ø100 mm |
| Stroke | 585 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 SAI100X585S 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 SAI100X585S 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 SI100X585S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×585 | 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 SI100X585S Is Used
Heavy Material Lifts
Drives robust vertical lifting platforms for heavy automotive subassemblies, utilizing the 3927 N push force at 0.5 MPa to elevate components reliably.
Pallet Diversion
Actuates large diverter arms on packaging conveyors, using the 585 mm stroke to shift heavy pallets smoothly between processing lanes.
Press Ejection
Ejects dense molded parts from hydraulic presses, benefiting from the adjustable end cushions to halt the 100 mm bore safely at stroke limits.
Replacing the Airtac SI100 Standard Cylinder SI100X585S with the SAI100X585S
To replace the SI100X585S, order the SAI100X585S, confirming the ISO 15552 mounting interface, 585 mm stroke, G1/2 port, and M20x1.5 rod thread. The built-in magnet (-S) pairs with legacy CS1-B/DS1-B sensors, though the SAI family uses current AirTAC switches. When sizing, neighboring bores offer different forces: an 80 mm bore yields 2513 N push at 0.5 MPa, while a 125 mm bore provides 6136 N. Remember that a standard cylinder drifts without live air, as the 36 mm adjustable air cushion only decelerates near stroke end; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Finally, at 585 mm stroke, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X585S
- ✓ 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 SI100X585S FAQ
Yes, the AirTAC SI100X585S is discontinued. The direct replacement is the SAI100X585S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 585 mm stroke, output force, G1/2 port, and mounting fixtures.
This double-acting cylinder features a G1/2 air port and an M20x1.5 rod thread. It generates 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X585S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X585S replacement — usually within 7-8 hours.