This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X40H, 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 SI100X40H
The AirTAC Airtac SI100 Standard Cylinder SI100X40H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 40mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X40H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X40H
- 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 SI100X40H
The AirTAC SI100X40H is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 40mm stroke. Featuring a Viton H seal for 0-150C high-temp environments, it delivers 3927N push force at 0.5MPa. The direct replacement is the SAI100X40H, matching the G1/2 port, M20x1.5 rod thread, and 36mm cushions.
This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure. For load holding, note that air cushions only decelerate; use a SAIL lock or external pilot check valve.
Airtac SI100 Standard Cylinder SI100X40H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X40H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X40H |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAI100X40H 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 SAI100X40H 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 SI100X40H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SI100X40H Is Used
High-Temperature Press Ejection
Uses the Viton H seal to withstand 0-150C ambient heat near molding presses while providing 3927N of push force at 0.5MPa to eject parts.
Short-Stroke Heavy Clamping
Applies the 40mm stroke and 801kgf maximum theoretical force to secure heavy metalwork during machining operations without excessive cycle time.
Industrial Valve Actuation
Leverages the G1/2 port and M20x1.5 rod thread to reliably shift large process valves in demanding factory pneumatic grids.
Replacing the Airtac SI100 Standard Cylinder SI100X40H with the SAI100X40H
To replace the discontinued SI100X40H, order the SAI100X40H. Verify the ISO 15552 mounting interface, 100mm bore, 40mm stroke, G1/2 port, and Viton H high-temperature seal. Because this non-magnetic SKU lacks a sensor groove switch, you cannot add position sensing. If sizing down, the 80mm bore yields 2513N push at 0.5MPa; if sizing up, the 125mm bore yields 6136N. Remember that a standard cylinder drifts on air loss—cushions only decelerate. For secure load holding, select the SAIL or BSAI lock variant, or install an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X40H
- ✓ 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 SI100X40H FAQ
Yes, the AirTAC SI100X40H is discontinued. The direct replacement is the SAI100X40H. It shares the exact same ISO 15552 mounting interface, 100mm bore, 40mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
The bore is 100mm with a G1/2 air port. Force output is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X40H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X40H replacement — usually within 7-8 hours.