This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X125TC, 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 SI100X125TC
The AirTAC SI100 Standard Cylinder SI100X125TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 125mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X125TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X125TC
- 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 SI100X125TC
The AirTAC SI100X125TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 125mm stroke, delivering 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X125TC, matching the bore, stroke, force, port and TC trunnion mounting interface. This SKU lacks a magnet (-S) and therefore cannot accept a position switch.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100X125TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X125TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X125TC |
| Bore size | Ø100 mm |
| Stroke | 125 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 SAI100X125TC 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 SAI100X125TC 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 SI100X125TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SI100X125TC Is Used
Heavy Press Ejection
Provides the robust 3927N output needed to reliably eject heavy stamped metal parts from press dies.
Pallet Diversion
Actuates heavy-duty TC trunnion-mounted diverter arms to redirect loaded pallets on high-throughput lines.
Replacing the Airtac SI100 Standard Cylinder SI100X125TC with the SAI100X125TC
To replace the SI100X125TC, order the SAI100X125TC and confirm the ISO 15552 TC trunnion mount, 125mm stroke, G1/2 port (PT/G/NPT thread) and M20x1.5 rod thread. Because this specific SKU has no magnet, it cannot support legacy CS1-B/DS1-B sensors; order an -S variant if sensing is required. Sizing both ways: a neighbouring 80mm bore yields 2513N push at 0.5MPa, while a 125mm bore yields 6136N. Note that a plain double-acting cylinder drifts on air loss—the 36mm adjustable cushions only decelerate near stroke ends. For load holding, specify an external pilot check valve, rod lock, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X125TC
- ✓ 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 SI100X125TC FAQ
Yes, the SI100X125TC is discontinued. The direct replacement is the SAI100X125TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 100mm bore, 125mm stroke, force, G1/2 port and TC trunnion mount to fit existing fixtures directly.
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 max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X125TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X125TC replacement — usually within 7-8 hours.