This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X450H, 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 SI200X450H
The AirTAC SI200 Standard Cylinder SI200X450H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X450H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X450H
- 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 SI200X450H
The AirTAC SI200X450H is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 450mm stroke. Built for heavy loads, it delivers 15708 N of push force at 0.5 MPa. This high-temp variant uses Viton H seals to operate up to 150 C. As a legacy unit lacking a magnet (-S), it cannot accept magnetic sensors. AirTAC replaced it with the SAI200X450H.
The SAI200X450H is the direct successor: identical ISO 15552 mounting interface, 450mm stroke, G3/4 port, and force. It upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure. The SAI family also adds SAIL and BSAI lock variants absent in the SI line.
Airtac SI200 Standard Cylinder SI200X450H Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X450H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X450H |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAI200X450H 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 SAI200X450H 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 SI200X450H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SI200X450H Is Used
Heavy Stamp Pressing
Drives large platens and stamping dies requiring up to 28274 N of thrust at 0.9 MPa, absorbing end-of-stroke shock with 50mm adjustable air cushions.
High-Temp Ejection
Ejects forged or heated parts from molds in environments up to 150 C, leveraging the Viton H seal kit to maintain structural integrity under thermal stress.
Replacing the Airtac SI200 Standard Cylinder SI200X450H with the SAI200X450H
To replace the SI200X450H, order the SAI200X450H. Verify your ISO 15552 mounting fixtures, 200mm bore, 450mm stroke, G3/4 port, and Viton H high-temperature seal needs. Because this SKU lacks a magnet, it cannot support legacy CS1-B/DS1-B sensors; if position detection is required, switch to an SAI equivalent with a magnet. For sizing alternatives, a 160mm bore yields 10053 N push at 0.5 MPa, while the 200mm bore hits 21991 N at 0.7 MPa. A plain cylinder drifts without live air, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Finally, at 450mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X450H
- ✓ 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 SI200X450H FAQ
Yes, the SI200X450H is discontinued. The direct replacement is the SAI200X450H. It shares the identical ISO 15552 mounting interface, 200mm bore, 450mm stroke, G3/4 port, and output force, fitting directly into existing fixtures.
This double-acting cylinder features a G3/4 air port and an M36x2 rod thread. It delivers 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 theoretical max of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X450H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X450H replacement — usually within 7-8 hours.