This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX325, 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 SI200AX325
The AirTAC Airtac SI200 Standard Cylinder SI200AX325 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 SAI200AX325, 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 → SAI200AX325
- 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 SI200AX325
The AirTAC SI200AX325 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 325mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and a 50mm adjustable air cushion. The direct replacement is the SAI200AX325, which shares the exact ISO 15552 mounting interface, bore, and output force.
This SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The SUS420J2 stainless rod (A) resists corrosion. Note this SKU lacks a magnet, so it cannot take a sensor. For safe sizing, expect a 9425 N working load (60% of [email protected]) or an 801 kg vertical lift. For held loads, use a pilot check valve, as cushions only decelerate.
Airtac SI200 Standard Cylinder SI200AX325 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX325 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX325 |
| 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 SAI200AX325 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 SAI200AX325 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 SI200AX325
| 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 SI200AX325 Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 21991 N push force at 0.7 MPa to seat heavy dies and form thick plate stock.
Mold Clamping Station
Secures large injection molds using the 15080 N pull force at 0.5 MPa, needing a pilot check valve to prevent drift.
Replacing the Airtac SI200 Standard Cylinder SI200AX325 with the SAI200AX325
To replace the SI200AX325, order the SAI200AX325. Confirm the ISO 15552 mounting interface, G3/4 port, and 325mm stroke. This unit has no magnet (-S) and cannot accept a CS1-B/DS1-B switch. If you need load holding on air loss, the cushion only decelerates; use an external rod lock or explore the SAIL/BSAI lock variants. With a 325mm stroke, use external guides to prevent rod bending. If downsizing, a 160mm bore yields 10053 N [email protected]; if upsizing, note 200mm is the largest standard option. Operating pressure is 0.15-1.0 MPa, with a Viton H seal option for 0-150 C heat.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX325
- ✓ 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 SI200AX325 FAQ
Yes, the SI200AX325 is discontinued. The direct replacement is the SAI200AX325. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 325mm stroke, 15708 N force, G3/4 port, and mounting interface.
It features a G3/4 air port. Force output is 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a maximum theoretical force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX325
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX325 replacement — usually within 7-8 hours.