This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X400CA, 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 SI100X400CA
The AirTAC Airtac SI100 Standard Cylinder SI100X400CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X400CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X400CA
- 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 SI100X400CA
The AirTAC SI100X400CA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 400mm stroke, and CA clevis mounting. Delivering 3927 N push force at 0.5 MPa via a G1/2 port, it is replaced by the SAI100X400CA. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, port, and M20x1.5 rod thread, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B sensors. For high-temperature needs, Viton H seals raise the operating range to 0-150 C.
Airtac SI100 Standard Cylinder SI100X400CA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X400CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X400CA |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAI100X400CA 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 SAI100X400CA 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 SI100X400CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SI100X400CA Is Used
Heavy-Duty Pressing
Drives large stamping and pressing fixtures requiring up to 5497 N of thrust at 0.7 MPa, utilizing the adjustable 36mm air cushions to absorb end-of-stroke impact.
Pallet Diversion
Actuates heavy pallet routing gates and stops on high-throughput packaging lines, where the CA clevis mount handles pivoting linkage demands.
Replacing the Airtac SI100 Standard Cylinder SI100X400CA with the SAI100X400CA
To replace the discontinued SI100X400CA, order the SAI100X400CA. Verify your ISO 15552 CA clevis mount, 400mm stroke, G1/2 port, and M20x1.5 rod thread. Because this SKU lacks a magnet, it cannot support position sensing; if switches are needed, select an SAI model with the S suffix for current AirTAC sensor compatibility. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore provides 6136 N. At 0.7 MPa, this 100mm bore outputs 5497 N. A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. With a 400mm stroke, use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X400CA
- ✓ 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 SI100X400CA FAQ
Yes, the AirTAC SI100X400CA is discontinued. The direct replacement is the SAI100X400CA. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 400mm stroke, CA clevis mount, G1/2 port, and output force. You simply install the SAI model into your existing fixture.
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, and 7068 N push at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 25mm rod and M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X400CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X400CA replacement — usually within 7-8 hours.