This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X500SN, 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 SI100X500SN
The AirTAC Airtac SI100 Standard Cylinder SI100X500SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X500SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X500SN
- 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 SI100X500SN
The AirTAC SI100X500SN is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 500 mm stroke. It features an extruded aluminum barrel, a 25 mm carbon steel piston rod, and a G1/2 air port, delivering a push force of 3927 N at 0.5 MPa. The direct replacement is the SAI100X500SN, which matches the original ISO 15552 mounting interface, bore, stroke, output force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The NBR seal supports -20 to +70 C, while the Viton H option extends this to 0-150 C. The SI -S magnet works with legacy CS1-B/DS1-B sensors, whereas the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X500SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X500SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X500SN |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100X500SN 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 SAI100X500SN 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 SI100X500SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100X500SN Is Used
Heavy Press Clamping
Secures large metal castings during machining operations, utilizing the 3927 N push force at 0.5 MPa to hold components rigidly against the tooling bed.
Pallet Diversion
Extends 500 mm to push heavy loaded pallets off a main conveyor line onto a secondary packaging branch without requiring external boosters.
Replacing the Airtac SI100 Standard Cylinder SI100X500SN with the SAI100X500SN
To replace the SI100X500SN, order the SAI100X500SN direct equivalent, confirming the ISO 15552 mounting interface, 100 mm bore, 500 mm stroke, G1/2 port, and your specific mounting accessory. The -S magnet enables position sensing, and the -N denotes the standard NBR seal. When sizing, note that a neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. A plain cylinder drifts without live air, as the cushion only decelerates; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Because the 500 mm stroke is long, use an external guide to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X500SN
- ✓ 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 SI100X500SN FAQ
Yes, the SI100X500SN is discontinued. The direct replacement is the SAI100X500SN. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 100 mm bore, 500 mm stroke, output force, G1/2 port, and mounting accessories.
The bore is 100 mm with a G1/2 air port. At 0.5 MPa it provides 3927 N push and 3681 N pull force. At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X500SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X500SN replacement — usually within 7-8 hours.