This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X75H, 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 SI100X75H
The AirTAC Airtac SI100 Standard Cylinder SI100X75H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X75H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X75H
- 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 SI100X75H
The AirTAC SI100X75H is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 75mm 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. The direct replacement is the SAI100X75H, matching the exact ISO 15552 mounting interface, M20x1.5 rod thread, and output force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the legacy line.
Airtac SI100 Standard Cylinder SI100X75H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X75H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X75H |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAI100X75H 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 SAI100X75H 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 SI100X75H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SI100X75H Is Used
High-Temp Press Ejection
Survives 150 C ambient heat near molding presses to eject 200 kg parts reliably using the Viton H seal kit.
Heavy Clamping Actuation
Generates 5497 N of clamping force at 0.7 MPa to secure dense metal workpieces during machining operations.
Industrial Pallet Diversion
Provides robust 75mm stroke diversion thrust on high-mass packaging lines without needing magnetic feedback.
Replacing the Airtac SI100 Standard Cylinder SI100X75H with the SAI100X75H
To replace the SI100X75H, order the SAI100X75H and verify the ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread. This high-temp H-seal variant operates up to 150 C. Since this specific SKU has no magnet, it cannot support position sensing; if switches are needed, specify an SAI100X75HS. Sizing context: a neighboring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. A plain cylinder drifts on air loss—the 36mm cushion only decelerates near stroke end. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. Stroke is under 300mm, so rod-bending side-load risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X75H
- ✓ 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 SI100X75H FAQ
Yes, the SI100X75H is discontinued. The direct replacement is the SAI100X75H. It shares the identical ISO 15552 mounting interface, 100mm bore, 75mm stroke, G1/2 port, and force ratings, fitting existing fixtures perfectly.
The G1/2 port bore delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 36mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X75H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X75H replacement — usually within 7-8 hours.