This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X125CA, 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 SI100X125CA
The AirTAC Airtac SI100 Standard Cylinder SI100X125CA 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 SAI100X125CA, 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 → SAI100X125CA
- 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 SI100X125CA
The AirTAC SI100X125CA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 125mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. Because this SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor.
The direct replacement is the SAI100X125CA. It shares the same ISO 15552 CA clevis interface, M20x1.5 rod thread and 36mm cushions. The SAI upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure. For high heat, Viton H seals raise the limit to 150C.
Airtac SI100 Standard Cylinder SI100X125CA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X125CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X125CA |
| 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 SAI100X125CA 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 SAI100X125CA 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 SI100X125CA
| 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 SI100X125CA Is Used
Heavy Press Clamping
Secures large steel plates in machining fixtures, utilizing the 3927N push force at 0.5MPa to hold parts rigidly against cutting loads.
Pallet Diverting
Actuates a heavy-duty routing gate on a 100mm bore assembly line, moving loaded pallets via the CA clevis mount.
Replacing the Airtac SI100 Standard Cylinder SI100X125CA with the SAI100X125CA
To replace the SI100X125CA, order the SAI100X125CA and confirm the ISO 15552 CA clevis mount, G1/2 port, and 125mm stroke. This non-magnetic SKU cannot hold a position switch. If you need sensing, specify the SAI with an S suffix. For sizing down, a 80mm bore yields 2513N push at 0.5MPa; sizing up to 125mm gives 6136N. Note that a standard 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. The SAIF variant integrates a 4M valve if you need local control.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X125CA
- ✓ 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 SI100X125CA FAQ
Yes, the SI100X125CA is discontinued. The direct replacement is the SAI100X125CA. It is dimensionally interchangeable per ISO 15552, retaining the same CA clevis mount, 100mm bore, 125mm stroke, output force, and G1/2 port.
This double-acting cylinder features a G1/2 port, M20x1.5 rod thread, and 36mm cushions. It generates 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X125CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X125CA replacement — usually within 7-8 hours.