This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X320, 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 SI100X320
The AirTAC Airtac SI100 Standard Cylinder SI100X320 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 320mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X320, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke320 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X320
- 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 SI100X320
The AirTAC SI100X320 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 320mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100X320. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, output force and port size, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches only fit the -S version.
Airtac SI100 Standard Cylinder SI100X320 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X320 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X320 |
| Bore size | Ø100 mm |
| Stroke | 320 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 SAI100X320 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 SAI100X320 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 SI100X320
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×320 | 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 SI100X320 Is Used
Heavy-Duty Pressing
Applies 5497 N at 0.7 MPa for seating bearings or clinching sheet metal assemblies securely.
Pallet Diverting
Uses the 320mm stroke to push heavy pallets off a main conveyor line onto a secondary packaging spur.
Lift Gate Actuation
Raises and lowers material handling gates, safely moving loads up to the 200 kg vertical lift threshold.
Replacing the Airtac SI100 Standard Cylinder SI100X320 with the SAI100X320
To replace the SI100X320, order the SAI100X320. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port thread (PT/G/NPT), and the M20x1.5 rod end. Because this SKU lacks a magnet, it cannot accept position sensors; order the -S suffix if you need CS1-B/DS1-B switches. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variant for load holding. With a 320mm stroke, use external guides to prevent rod bending and side loads. Sizing both ways: a 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X320
- ✓ 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 SI100X320 FAQ
Yes, the AirTAC SI100X320 is discontinued. The direct replacement is the SAI100X320. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 320mm stroke, G1/2 port, output force and mounting interface, so it drops directly into existing fixtures.
The 100mm bore features a G1/2 air 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 force of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X320
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X320 replacement — usually within 7-8 hours.