This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X325, 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 SI200X325
The AirTAC SI200 Standard Cylinder SI200X325 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 325mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X325, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X325
- 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 SI200X325
The AirTAC SI200X325 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 325mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. AirTAC replaced the SI line with the SAI family; the SAI200X325 is the direct successor, retaining the same interface, M36x2 rod thread and 50mm cushions.
Because this SKU lacks the -S magnet, it cannot accept a position switch like the legacy CS1-B/DS1-B sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure.
Airtac SI200 Standard Cylinder SI200X325 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X325 |
| Bore size | Ø200 mm |
| Stroke | 325 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 SAI200X325 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 SAI200X325 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 SI200X325
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×325 | 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 SI200X325 Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 3204 kgf theoretical max force at 1.0 MPa.
Pallet Lifting
Lifts heavy industrial pallets or chassis components, safely handling vertical loads around 801 kg.
Automated Assembly
Actuates massive tooling platens in automated lines using the 325mm stroke and G3/4 air supply.
Replacing the Airtac SI200 Standard Cylinder SI200X325 with the SAI200X325
To replace the SI200X325, order the SAI200X325. Verify your ISO 15552 mounting accessory (LB, FA, CA, TC) and thread type (PT/G/NPT) match. Since this is a non-magnet SKU, you cannot mount sensors; if sensing is needed, specify an SAI200X325S. The 325mm stroke on a 40mm rod risks bending under side-loads, so use external guides to prevent rod damage. For load-holding on air loss, note that cushions only decelerate; you need an external pilot check valve, or the SAIL/BSAI lock variants. If 21991 N at 0.7 MPa is insufficient, step up to custom machining, but the 3204 kgf max at 1.0 MPa usually suffices.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X325
- ✓ 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 SI200X325 FAQ
Yes, the SI200X325 is discontinued. The direct replacement is the SAI200X325. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 325mm stroke, 15708 N force, G3/4 port and mounting fixtures.
At 0.5 MPa it provides 15708 N push and 15080 N pull. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical max force is 3204 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X325
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X325 replacement — usually within 7-8 hours.