This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X300H, 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 SI100X300H
The AirTAC Airtac SI100 Standard Cylinder SI100X300H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 300mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X300H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X300H
- 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 SI100X300H
The AirTAC SI100X300H is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 300mm stroke. Featuring a Viton H high-temperature seal (0-150 C), it delivers 3927 N push force at 0.5 MPa via a G1/2 port. As a non-magnet SKU, it cannot accept position sensors.
The direct replacement is the SAI100X300H, matching the ISO 15552 mounting interface, M20x1.5 rod thread, and 36mm cushions. The SAI upgrades the piston seal to two Y-shaped elements for low start-up pressure. For load holding, note the cushion only decelerates; use SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100X300H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X300H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X300H |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAI100X300H 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 SAI100X300H 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 SI100X300H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SI100X300H Is Used
High-Temperature Forming
Ideal for molding presses up to 150 C using the Viton H seal, providing 5497 N push force at 0.7 MPa for reliable actuation.
Replacing the Airtac SI100 Standard Cylinder SI100X300H with the SAI100X300H
To replace the SI100X300H, order the SAI100X300H. Verify the ISO 15552 mounting interface, G1/2 port, and Viton H seal. Because this SKU lacks the -S magnet, it cannot support CS1-B/DS1-B sensors; order SAI with -S if sensing is needed. Sizing both ways: the 100mm bore yields 5497 N push at 0.7 MPa, while an 80mm bore offers 3518 N. For the 300mm stroke, use external guides to prevent rod-bending side loads. This cylinder does not hold load without air; use an external rod lock or pilot check valve for safety.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X300H
- ✓ 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 SI100X300H FAQ
Yes, the SI100X300H is discontinued. The direct replacement is the SAI100X300H. It is dimensionally interchangeable per ISO 15552, maintaining the same bore, stroke, force, G1/2 port, and mounting interface, but features an upgraded two Y-shaped piston seal.
It features a G1/2 port, M20x1.5 rod thread, and operates at 30-800 mm/s. Forces are: 3927 N push / 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X300H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X300H replacement — usually within 7-8 hours.