This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X35H, 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 SI100X35H
The AirTAC Airtac SI100 Standard Cylinder SI100X35H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 35mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X35H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X35H
- 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 SI100X35H
The AirTAC SI100X35H is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 35 mm stroke. As a high-temperature variant, it uses Viton H seals for 0 to 150 C environments. Delivering 3927 N push force at 0.5 MPa, it features a 25 mm rod, M20x1.5 thread, 36 mm cushions, and a G1/2 port. This SKU lacks a magnet, so it cannot accept position sensors.
AirTAC replaced the SI line with the SAI100X35H direct upgrade. It shares the exact ISO 15552 mounting interface, bore, stroke, force, and port. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI100 Standard Cylinder SI100X35H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X35H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X35H |
| Bore size | Ø100 mm |
| Stroke | 35 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 SAI100X35H 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 SAI100X35H 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 SI100X35H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×35 | 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 SI100X35H Is Used
High-Temp Press Ejection
Short 35 mm stroke ejection of forged parts from heated dies, utilizing the Viton H seals to withstand ambient 150 C radiated heat and 3927 N push force.
Heavy Blanking Clamp
Securing thick plate stock during heavy stamping operations, where the 100 mm bore provides rigid 5497 N clamping at 0.7 MPa without mechanical deflection.
Pallet Diverter Gate
Actuating heavy-duty lane diverters on high-mass pallet conveyors, delivering rapid 30-800 mm/s cycling and robust 25 mm rod endurance.
Replacing the Airtac SI100 Standard Cylinder SI100X35H with the SAI100X35H
To replace this SI100X35H, order the SAI100X35H. Verify the ISO 15552 mounting interface, 100 mm bore, 35 mm stroke, G1/2 port, and Viton H high-temp seal. Because this specific SKU has no magnet (-S), it cannot support CS1-B or DS1-B sensors; if you need position detection, select an SAI model with the S suffix. The 100 mm bore yields 3927 N push at 0.5 MPa; sizing down to an 80 mm bore gives 2513 N, while sizing up to 125 mm provides 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X35H
- ✓ 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 SI100X35H FAQ
Yes, the SI100X35H is discontinued. The direct replacement is the SAI100X35H. It is dimensionally interchangeable per ISO 15552, maintaining the same 100 mm bore, 35 mm stroke, 3927 N force, G1/2 port, and mounting interface. You simply order the SAI equivalent.
The G1/2 port is fixed by the 100 mm bore. Force output 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 theoretical maximum of 801 kgf at 1.0 MPa. The cylinder operates at 30-800 mm/s with a 25 mm rod and 36 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X35H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X35H replacement — usually within 7-8 hours.