This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX950, 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 SI200AX950
The AirTAC Airtac SI200 Standard Cylinder SI200AX950 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 950mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX950, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX950
- 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 SI200AX950
The AirTAC SI200AX950 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 950mm stroke. It delivers 15708 N push and 15080 N pull at 0.5 MPa, utilizing a G3/4 port and an SUS420J2 stainless piston rod. AirTAC replaced this end-of-line unit with the SAI200AX950, a direct replacement retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note this SKU lacks a magnet so it cannot accept position sensors, and the SAI family adds SAIL lock and BSAI clamp-lock variants absent from the SI line.
Airtac SI200 Standard Cylinder SI200AX950 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX950 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX950 |
| Bore size | Ø200 mm |
| Stroke | 950 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 SAI200AX950 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 SAI200AX950 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 SI200AX950
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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 SI200AX950 Is Used
Heavy Press Forming
Applies the 21991 N push force at 0.7 MPa for stamping and forming large metal panels in automated fabrication lines.
Pallet Lift Stations
Lifts loaded pallets up to the 801 kg vertical capacity limit, requiring external guidance to manage the 950mm stroke safely.
Large Mold Handling
Actuates heavy injection molds using the SUS420J2 stainless rod, providing corrosion resistance in humid production environments.
Replacing the Airtac SI200 Standard Cylinder SI200AX950 with the SAI200AX950
To replace the SI200AX950, order the SAI200AX950. Verify the ISO 15552 mounting interface, the 950mm stroke, and the G3/4 port. Because this 950mm stroke is long, use external guides to prevent rod bending and side-load damage. Sizing down, a 160mm bore yields 10053 N push at 0.5 MPa; sizing up is not available in standard ISO 15552 ranges. This cylinder cannot hold a load without live air—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. This no-magnet SKU cannot accept CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX950
- ✓ 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 SI200AX950 FAQ
Yes, the SI200AX950 is discontinued. The direct replacement is the SAI200AX950. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 950mm stroke, 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 SAI200AX950
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX950 replacement — usually within 7-8 hours.