This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X500STC, 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 SI100X500STC
The AirTAC Airtac SI100 Standard Cylinder SI100X500STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X500STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X500STC
- 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 SI100X500STC
The AirTAC SI100X500STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 500mm stroke. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X500STC. This direct successor shares the exact ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread, fitting existing TC trunnion fixtures perfectly.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL lock, SAIF valve, and BSAI clamp-lock variants absent in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X500STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X500STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X500STC |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100X500STC 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 SAI100X500STC 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 SI100X500STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100X500STC Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy workpiece diverters on high-capacity production lines, utilizing the 3927 N push force at 0.5 MPa.
Automated Warehousing
Executes 500mm lifting and positioning strokes for substantial storage totes, requiring external guides to manage rod bending during long vertical travel.
Large Assembly Presses
Applies steady clamping pressure for large component fabrication, where the TC trunnion mount accommodates slight alignment shifts along the 500mm extension.
Replacing the Airtac SI100 Standard Cylinder SI100X500STC with the SAI100X500STC
To replace the SI100X500STC, order the SAI100X500STC. Verify the ISO 15552 TC trunnion mount, 500mm stroke, G1/2 port, and the -S magnet for CS1-B/DS1-B sensors. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 500mm stroke, use external guides to prevent rod bending and side loads. Speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X500STC
- ✓ 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 SI100X500STC FAQ
Yes, the AirTAC SI100X500STC is discontinued. The direct replacement is the SAI100X500STC. It shares the identical ISO 15552 mounting interface, 100mm bore, 500mm stroke, output force, and G1/2 port, so it drops directly into your existing TC trunnion fixtures.
The bore is 100mm with a G1/2 air port. 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 rod is 25mm with an M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X500STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X500STC replacement — usually within 7-8 hours.