This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X20H, 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 SI100X20H
The AirTAC Airtac SI100 Standard Cylinder SI100X20H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 20mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X20H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X20H
- 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 SI100X20H
The AirTAC SI100X20H is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore and 20mm stroke. Built for high-temperature duty with a Viton H seal (0-150 C), it delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X20H, a direct upgrade retaining the exact ISO 15552 mounting interface, M20x1.5 rod thread, and force class.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors.
Airtac SI100 Standard Cylinder SI100X20H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X20H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X20H |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAI100X20H 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 SAI100X20H 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 SI100X20H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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 SI100X20H Is Used
High-Temp Clamping
Applies 3927 N of clamping force on heavy metal parts in hot stamping cells, leveraging the Viton H seal to withstand 150 C ambient heat.
Short-Stroke Ejection
Provides a rapid 20mm ejection stroke on thick press blanks, safely moving loads up to 2356 N without relying on air for holding.
Rigid Plunging
Acts as a high-force pneumatic ram for short plunging operations, delivering a theoretical maximum of 801 kgf at 1.0 MPa.
Replacing the Airtac SI100 Standard Cylinder SI100X20H with the SAI100X20H
To replace the SI100X20H, order the SAI100X20H. It drops directly into existing fixtures via the ISO 15552 mounting interface, matching the 100mm bore, 20mm stroke, G1/2 port, and M20x1.5 thread. If you need position sensing, you must select an SAI variant with the -S magnet option, as this legacy unit has none. For load holding, remember a standard cylinder drifts on air loss—the 36mm adjustable cushions only decelerate near stroke end. Use an external pilot check valve or explore the SAIL (air-released lock) or BSAI (clamp-lock) variants. If downsizing, a 80mm bore yields 2513 N push at 0.5 MPa; if upsizing, a 125mm bore yields 6136 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X20H
- ✓ 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 SI100X20H FAQ
Yes, the AirTAC SI100X20H is discontinued. The direct replacement is the SAI100X20H. It shares the identical ISO 15552 mounting interface, 100mm bore, 20mm stroke, G1/2 port, and output force, but features an upgraded two Y-shaped element piston seal for longer life.
This 100mm bore cylinder uses a G1/2 air port. The thrust ratings are: 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X20H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X20H replacement — usually within 7-8 hours.