This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX150, 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 SI200AX150
The AirTAC Airtac SI200 Standard Cylinder SI200AX150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 150mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke150 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX150
- 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 SI200AX150
The AirTAC SI200AX150 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 150 mm stroke. Built for heavy-duty tasks, it delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200AX150, matching the exact bore, stroke, G3/4 port, and ISO 15552 mounting interface for a seamless fixture swap.
This specific SKU features a SUS420J2 stainless steel piston rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure.
Airtac SI200 Standard Cylinder SI200AX150 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX150 |
| Bore size | Ø200 mm |
| Stroke | 150 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 SAI200AX150 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 SAI200AX150 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 SI200AX150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×150 | 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 SI200AX150 Is Used
Heavy Stamping Press
Drives large platens in metal forming with 21991 N push force at 0.7 MPa, utilizing the 50 mm adjustable cushion to halt the 200 mm bore smoothly.
Large Mold Clamping
Secures heavy industrial molds using the SUS420J2 stainless rod, resisting moisture while delivering a 3204 kgf maximum lock at 1.0 MPa.
Replacing the Airtac SI200 Standard Cylinder SI200AX150 with the SAI200AX150
To replace the SI200AX150, order the SAI200AX150 and verify the ISO 15552 mounting interface, 150 mm stroke, and G3/4 port. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; choose an SAI variant with a magnet if sensing is required. If downsizing, a 160 mm bore offers 10053 N at 0.5 MPa; if upping force, 1.0 MPa yields a 3204 kgf max. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for load holding. The SUS420J2 rod suits humid settings, and a Viton H seal extends heat to 150 C. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX150
- ✓ 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 SI200AX150 FAQ
Yes, the SI200AX150 is discontinued. The direct replacement is the SAI200AX150. It shares the identical ISO 15552 mounting interface, 200 mm bore, 150 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder uses a G3/4 air port. It generates 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 3204 kgf maximum at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX150
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX150 replacement — usually within 7-8 hours.