This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X25CA, 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 SI100X25CA
The AirTAC Airtac SI100 Standard Cylinder SI100X25CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X25CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X25CA
- 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 SI100X25CA
The AirTAC SI100X25CA is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 25mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X25CA, a direct sharing the exact CA clevis mount, M20x1.5 rod thread, and 36mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for lower start-up pressure and longer life. Because this specific SI SKU lacks a magnet (-S), it cannot accept position switches like the legacy CS1-B/DS1-B.
Airtac SI100 Standard Cylinder SI100X25CA Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X25CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X25CA |
| Bore size | Ø100 mm |
| Stroke | 25 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 SAI100X25CA 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 SAI100X25CA 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 SI100X25CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 SI100X25CA Is Used
Heavy-Duty Clamping
Secures large metal castings during CNC machining using the 3927N push force at 0.5MPa.
Stamping Press Feed
Indexes thick sheet material into a press, utilizing the short 25mm stroke and CA clevis mount.
Press Fit Assembly
Pushes bearings into heavy housings, safely operating within the 2356N working load limit.
Replacing the Airtac SI100 Standard Cylinder SI100X25CA with the SAI100X25CA
To replace the SI100X25CA, order the SAI100X25CA and verify the ISO 15552 interface, 100mm bore, 25mm stroke, G1/2 port (PT/G/NPT), and CA clevis mounting. This non-magnetic SKU cannot take sensors, so if switching is needed, specify an SAI with the magnet option. Sizing both ways: a neighbouring 80mm bore yields 2513N push at 0.5MPa, while the 125mm bore gives 6136N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant (bores 32-100) integrates a 4M valve if space is tight.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X25CA
- ✓ 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 SI100X25CA FAQ
Yes, the AirTAC SI100X25CA is discontinued. The direct replacement is the SAI100X25CA. It shares the identical ISO 15552 mounting interface, 100mm bore, 25mm stroke, force, G1/2 port, and CA clevis, fitting existing fixtures perfectly.
This double-acting cylinder uses a G1/2 air port. 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 SAI100X25CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X25CA replacement — usually within 7-8 hours.