This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X320H, 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 SI100X320H
The AirTAC Airtac SI100 Standard Cylinder SI100X320H 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 SAI100X320H, 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 → SAI100X320H
- 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 SI100X320H
The AirTAC SI100X320H is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore, 320mm stroke, and a Viton H high-temperature seal (0 to 150 C). Delivering 3927 N push at 0.5 MPa, it is replaced by the SAI100X320H. This direct successor matches the exact G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. It also adds SAIL, SAIF, and BSAI variants absent from the SI line. Without a -S suffix, this SKU cannot take a magnetic switch.
Airtac SI100 Standard Cylinder SI100X320H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X320H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X320H |
| 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 SAI100X320H 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 SAI100X320H 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 SI100X320H
| 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 SI100X320H Is Used
Heavy Stamping Press
Drives heavy tooling stacks where the 3927 N push force at 0.5 MPa and 320mm stroke accommodate deep draw operations.
High-Tport Ejection
Ejects hot molded parts safely, utilizing the Viton H seal rated for 0 to 150 C environments.
Replacing the Airtac SI100 Standard Cylinder SI100X320H with the SAI100X320H
To replace the SI100X320H, order the SAI100X320H. Verify the ISO 15552 mounting interface, 100mm bore, 320mm stroke, G1/2 port, and Viton H seal. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors. If you need position sensing, select an SAI model with the magnet option. For loads needing 7068 N at 0.9 MPa, the 100mm bore is ideal, but if 5497 N at 0.7 MPa is sufficient, an 80mm bore offers a smaller footprint. At 320mm, add external guides to prevent rod bending from side loads. The air cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X320H
- ✓ 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 SI100X320H FAQ
Yes, the SI100X320H is discontinued. The direct replacement is the SAI100X320H. It shares the same ISO 15552 mounting interface, 100mm bore, 320mm stroke, output force, G1/2 port, and accessories, fitting existing fixtures perfectly.
The G1/2 port bore delivers a push of 3927 N and pull of 3681 N 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. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X320H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X320H replacement — usually within 7-8 hours.