This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X450SH, 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 SI100X450SH
The AirTAC Airtac SI100 Standard Cylinder SI100X450SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X450SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X450SH
- 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 SI100X450SH
The AirTAC SI100X450SH is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 450 mm stroke. It delivers 3927 N push force at 0.5 MPa and features a G1/2 port. The direct replacement is the SAI100X450SH, retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and porting. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The H suffix denotes a Viton seal, extending operating temperature to 0-150 C.
The original SI magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. The SAI family also adds SAIL, SAIF, and BSAI lock variants lacking in the SI line.
Airtac SI100 Standard Cylinder SI100X450SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X450SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X450SH |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAI100X450SH 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 SAI100X450SH 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 SI100X450SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SI100X450SH Is Used
Heavy Stamping Press
Drives robust tooling in automated stamping lines, utilizing the 3927 N push force at 0.5 MPa to form thick metal components reliably.
High-Temp Actuation
Shifts heavy gates near ovens or dryers where the Viton H seal option sustains 0-150 C heat without degrading the actuator integrity.
Replacing the Airtac SI100 Standard Cylinder SI100X450SH with the SAI100X450SH
To replace the SI100X450SH, order the SAI100X450SH. Verify the ISO 15552 mounting interface, G1/2 port, M20x1.5 rod thread, and 450 mm stroke. The S suffix indicates a piston magnet for position sensing; the original used CS1-B/DS1-B switches, whereas the SAI takes current AirTAC sensors. The H suffix specifies the Viton seal for 0-150 C high-temperature environments. If you need to adjust force, the neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. At 0.7 MPa, this 100 mm bore outputs 5497 N. Because the stroke is 450 mm, use an external guide to prevent rod bending and side-load damage. A plain cylinder does not hold load without live air; 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 → SAI100X450SH
- ✓ 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 SI100X450SH FAQ
Yes, the SI100X450SH is discontinued. The direct replacement is the SAI100X450SH. It shares the identical ISO 15552 mounting interface, 100 mm bore, 450 mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
This double-acting cylinder has a G1/2 port. The thrust is 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 maximum theoretical force of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X450SH
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