This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX25, 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 SI200 Standard Cylinder SI200AX25
The AirTAC Airtac SI200 Standard Cylinder SI200AX25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX25
- 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 SI200 Standard Cylinder SI200AX25
The AirTAC SI200AX25 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 25 mm stroke. It delivers 15708 N push force at 0.5 MPa, utilizing a G3/4 port and an M36x2 rod thread. The direct replacement is the SAI200AX25, which maintains the exact ISO 15552 mounting interface, bore, stroke, and output force for seamless fixture integration.
This SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU includes a SUS420J2 stainless steel rod (option A) for corrosion resistance but lacks a magnet, meaning it cannot accept position switches.
Airtac SI200 Standard Cylinder SI200AX25 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX25 |
| Bore size | Ø200 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI200AX25 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200AX25 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200AX25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | 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 SI200 Standard Cylinder SI200AX25 Is Used
Heavy Press Stamping
Generates 21991 N at 0.7 MPa to form thick gauge metal plates and drive heavy stamping dies in automated fabrication lines.
Mold Clamping
Secures large injection molds using the SUS420J2 stainless rod option, providing corrosion resistance in humid production environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX25 with the SAI200AX25
To replace the discontinued SI200AX25, order the SAI200AX25, confirming the ISO 15552 mounting interface, 200 mm bore, 25 mm stroke, and G3/4 port. Because this SKU lacks the -S magnet option, it cannot support legacy CS1-B/DS1-B sensors; order a magneted version if position detection is required. A plain cylinder does not hold load on air loss—the cushion only decelerates—so for suspended loads use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAI family also adds SAIF self-valve options (bores 32-100) not available here.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX25
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200AX25 FAQ
Yes, the SI200AX25 is discontinued. The direct replacement is the SAI200AX25, which shares the identical ISO 15552 mounting interface, 200 mm bore, 25 mm stroke, force, and G3/4 port.
It features a G3/4 port and delivers 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX25
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX25 replacement — usually within 7-8 hours.